SGP/AOS/C1 - Humidograph water circulation system failure

The water circulation system for the AOS humidograph failed.  Consequently, the humidified 
nephelometer was reporting aerosol light scattering values during this period that were 
close to what the reference nephelometer was observing. The difference between the two 
sets of measurements reflect particle losses in the humidifier and different temperature 
environments for the two instruments. Humidified nephelometer data during this period are 
technically valid, they just do not reflect relative humidity scans (the normal operating 
mode).

• TSI High RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_HRH)
• TSI High RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_HRH)
• TSI High RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_HRH)
• TSI High RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_HRH)
• TSI High RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_HRH)
• TSI High RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_HRH)
• TSI High RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_HRH)
• TSI High RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_HRH)
• TSI High RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_HRH)
• TSI High RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_HRH)
• TSI High RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_HRH)
• TSI High RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_HRH)

SGP/AOS/C1 - CN counter removed

The AOS condensation particle counter performance degraded to unacceptable
levels and was removed for repair.  

For the first time period: upon inspection of the internal condition of the instrument, it 
was found that oil was present in the intake line.  It is unknown how this oil could 
have arrived in this position.  The instrument was thoroughly cleaned and back-flushed, and 
returned to service during the maintenance visit.

For the second time period: The degradation of began July 8th.  Data collected during this 
time period are either incorrect or missing and should not be used.

• CPC Particle concentration(CPCPartConc)

TWP/C2/SMET - Pressure sensitivity to rain

The pressure behaves anomalously during rain events - even very mild
ones.  Normally, the pressure undergoes a smooth semi-diurnal
oscillation with little higher frequency variability.  However, during
and shortly after rain events, the pressure signal exhibits abrupt
changes - this sort of behavior has occasionally been observed at
Manus but not with the regularity seen here.  Examples of this
behaviour occur on (date in the form YYYYMMDD):

19981212
19981215
19981216
19981217
19981223
19981224
19981225
19981230
19981231

• Barometric Pressure(atmos_pressure)
• Vapor pressure standard deviation(vappress_sd)
• Vapor pressure mean(vappress_mean)

• Vapor pressure standard deviation(vappress_sd)
• Vapor pressure mean(vappress_mean)
• Barometric Pressure(atmos_pressure)

SGP/AOS/C1 - Nephelometer failure

An inexperienced AOS technician inadvertently closed off the flow to the dual-nephelometer 
humidograph system during a Friday Preventative Maintenance.  This resulted in liquid 
water getting into the humidified nephelometer.  Flow was restored to the system on Monday, 
but the nephelometers were producing strange data.  A number of tests were performed 
over the next few days to remotely troubleshoot the situation, to no avail.  Eventually, the 
decision was made to pull both nephelometers and return them to Boulder for repair.  
This DQR refers only to the reference nephelometer, which was out of service for 2 periods 
due to 2 separate problems.  This DQR is for the first period, from 000602 (1842 GMT) to 
000616 (2234 GMT).  Light absorption are invalid whenever the reference nephelometer is 
not operational, because those data are required for correction of the absorption data.

• TSI Low RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_LRH)
• TSI Low RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_LRH)
• TSI Low RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_LRH)
• TSI Low RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_LRH)
• TSI Low RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_LRH)
• TSI Low RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_LRH)
• TSI Low RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_LRH)
• TSI Low RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_LRH)
• TSI Low RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_LRH)
• TSI Low RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_LRH)
• TSI Low RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_LRH)
• TSI Low RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_LRH)
• TSI Low RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_LRH)
• TSI Low RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_LRH)
• CLAP Signal(BapSignal)
• CLAP reference signal(BapRef)
• TSI Low RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_LRH)

• TSI Low RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_LRH)
• TSI Low RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_LRH)
• TSI Low RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_LRH)
• TSI Low RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_LRH)
• TSI Low RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_LRH)
• 1 um Absorption coefficient(Bap_I_1um)
• 10 um Absorption coefficient(Bap_I_10um)
• TSI Low RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_LRH)
• TSI Low RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_LRH)
• TSI Low RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_LRH)
• TSI Low RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_LRH)
• TSI Low RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_LRH)
• TSI Low RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_LRH)
• TSI Low RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_LRH)

SGP/AOS/C1 - Nephelometer failure

An inexperienced AOS technician inadvertently closed off the flow to the dual-nephelometer 
humidograph system during a Friday Preventative Maintenance.  This resulted in liquid 
water getting into the humidified nephelometer.  Flow was restored to the system on Monday, 
but the nephelometers were producing strange data.  A number of tests were performed 
over the next few days to remotely troubleshoot the situation, to no avail.  Eventually, the 
decision was made to pull both nephelometers and return them to Boulder for repair.  
This DQR refers only to the reference nephelometer, which was out of service for 2 periods 
due to 2 separate problems.  This DQR is for the second period, from 000620 (1340 GMT) to 
000703 (1833 GMT).  Light absorption measurements are invalid whenever the reference 
nephelometer is not operational, because those data are required for correction of the 
absorption data.

• TSI Low RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_LRH)
• TSI Low RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_LRH)
• TSI Low RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_LRH)
• TSI Low RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_LRH)
• TSI Low RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_LRH)
• TSI Low RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_LRH)
• TSI Low RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_LRH)
• TSI Low RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_LRH)
• TSI Low RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_LRH)
• TSI Low RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_LRH)
• TSI Low RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_LRH)
• TSI Low RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_LRH)
• TSI Low RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_LRH)
• TSI Low RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_LRH)
• CLAP Signal(BapSignal)
• CLAP reference signal(BapRef)
• TSI Low RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_LRH)

• TSI Low RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_LRH)
• TSI Low RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_LRH)
• TSI Low RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_LRH)
• TSI Low RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_LRH)
• TSI Low RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_LRH)
• 1 um Absorption coefficient(Bap_I_1um)
• 10 um Absorption coefficient(Bap_I_10um)
• TSI Low RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_LRH)
• TSI Low RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_LRH)
• TSI Low RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_LRH)
• TSI Low RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_LRH)
• TSI Low RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_LRH)
• TSI Low RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_LRH)
• TSI Low RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_LRH)

SGP/AOS/C1 - Nephelometer failure

An inexperienced AOS technician inadvertently closed off the flow to the dual-nephelometer 
humidograph system during a Friday Preventative Maintenance.  This resulted in liquid 
water getting into the humidified nephelometer.  Flow was restored to the system on Monday, 
but the nephelometers were producing strange data.  A number of tests were performed 
over the next few days to remotely troubleshoot the situation, to no avail.  Eventually, the 
decision was made to pull both nephelometers and return them to Boulder for repair.  
This DQR refers only to the humidified nephelometer, which was out of service for the entire 
period from 000602 through 000703.

• TSI High RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_HRH)
• TSI High RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_HRH)
• TSI High RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_HRH)
• TSI High RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_HRH)
• TSI High RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_HRH)
• TSI High RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_HRH)
• TSI High RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_HRH)
• TSI High RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_HRH)
• TSI High RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_HRH)
• TSI High RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_HRH)
• TSI High RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_HRH)
• TSI High RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_HRH)
• TSI High RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_HRH)
• TSI High RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_HRH)
• TSI High RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_HRH)
• CLAP Signal(BapSignal)
• CLAP reference signal(BapRef)

• TSI High RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_HRH)
• TSI High RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_HRH)
• 1 um Absorption coefficient(Bap_I_1um)
• 10 um Absorption coefficient(Bap_I_10um)
• TSI High RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_HRH)
• TSI High RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_HRH)
• TSI High RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_HRH)
• TSI High RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_HRH)
• TSI High RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_HRH)
• TSI High RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_HRH)
• TSI High RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_HRH)
• TSI High RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_HRH)
• TSI High RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_HRH)
• TSI High RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_HRH)

SGP/SIRS/C1 - Reprocess: 4/24 - 5/9 Data at C1

Magnitude of data is correct, however, 2 wires were crossed producing negative values for 
SW Global Down, SW Global Up, SW Direct Normal, and SW Diffuse Down.
Problem has been fixed at site.

• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)

SGP/SIRS/C1 - Diffuse Pyranometer Thermal Offsets

Broadband downwelling shortwave diffuse (sky) irradiance measurements available from SIRS
during the period of this Data Quality Report (DQR), require adjustment for thermal
offsets.  These thermal, or ?zero? offsets refer to the generally reduced output signals
from a shaded pyranometer due to the exchange of longwave (infrared) irradiance between
the single black thermopile detector, the protective glass domes surrounding the
detector, and the atmosphere. Originally considered an acceptable nighttime response of
thermopile-type pyranometers, the generally negative bias is now recognized to
significantly effect the accuracy of SIRS diffuse irradiance data during daylight
periods.

Studies of the Eppley Laboratory, Inc. Model PSP (Precision Spectral Pyranometer), used
for the SIRS   measurements of diffuse irradiance, suggest the thermal offset correction
can range from near 0 to as much as 30 Watts per square meter, depending on the
coincident net longwave, or infrared irradiance [1, 2].  Under very clear-sky conditions,
the diffuse irradiance from a shaded PSP can be less than the minimum physical limit
defined by radiative transfer model estimates based only on Rayleigh scattering effects.

A correction method has been developed for adjusting SIRS diffuse irradiance data [3]. 
The resulting Value Added Product (VAP) will be applied to SIRS data for the period of
this DQR.  The VAP will not be applied to SIROS data collected before the instrument
platform was converted to SIRS.

Additionally, the Model PSP radiometer has been replaced by a Model 8-48 which uses a
black and white thermopile detector known to reduce the thermal offset errors to less
than 2 Watts per square meter [3].  The radiometer replacement at this SIRS location was
completed on the ending date of this DQR.

References:
1. Gulbrandsen, A., 1978:  On the use of pyranometers in the study of spectral solar
radiation and atmospheric aerosols.  J. Appl. Meteorol., 17, 899-904.
2. Cess, R. D., X. Jing, T. Qian, and M. Sun, 1999:  Validation strategies applied to the
measurement of total, direct and diffuse shortwave radiation at the surface.  J. Geophys.
Res.
3. Dutton, E.G., J. Michalsky, T. Stoffel, B. Forgan, J. Hickey, D. Nelson, T. Alberta,
and I. Reda, 2001:  Measurement of Broadband Diffuse Solar Irradiance Using Current
Commercial Instrumentation With a Correction for Thermal Offset Errors. J. Atmos. Oceanic
Tech.   Vol 18, No. 3, 297-314.   (March 2001)

• Shaded pyranometer voltage(short_diffuse)

• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Maxima(down_short_diffuse_hemisp_max)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Minima(down_short_diffuse_hemisp_min)

TWP/SMET/C1 - Wind speed calibration errors

Wind speed calibration factors were reversed between wind speed sensors 1 (upper) and 2 
(lower). Results in less than 1% error, but correction factors may be used.

To correct wind speed #1 (upper) add 0.03 m/s.
To correct wind speed #2 (lower) subtract 0.03 m/s.

• Lower sensor, wind speed vector average(lo_spd_vec_avg)
• Upper sensor, wind speed maximum(up_spd_max)
• Upper sensor, wind speed arithmetic average(up_spd_arith_avg)
• Lower sensor, wind speed standard deviation(lo_spd_sd)
• Upper sensor, wind speed minimum(up_spd_min)
• Upper sensor, wind speed standard deviation(up_spd_sd)
• Lower sensor, wind speed arithmetic average(lo_spd_arith_avg)
• Lower sensor, wind speed minimum(lo_spd_min)
• Upper sensor, wind speed vector average(up_spd_vec_avg)
• Lower sensor, wind speed maximum(lo_spd_max)

• Wind #2 speed minimum(wind2_spd_min)
• Wind #1 speed vector average(wind1_spd_vec_avg)
• Wind #2 speed vector average(wind2_spd_vec_avg)
• Wind #1 speed maximum(wind1_spd_max)
• Wind #2 speed maximum(wind2_spd_max)
• Wind #1 speed maximum gust(wind1_spd_max_gust)
• Wind #2 speed arithmetic average(wind2_spd_arith_avg)
• Wind #1 speed standard deviation(wind1_spd_sd)
• Wind #2 speed standard deviation(wind2_spd_sd)
• Wind #2 speed maximum gust(wind2_spd_max_gust)
• Wind #1 speed minimum(wind1_spd_min)
• Wind #1 speed arithmetic average(wind1_spd_arith_avg)

SGP/SMOS/E1 - E1 SMOS Wind speed and direction values incorrect

Wind speed and direction sensors reporting incorrect values due to accumulation of ice on 
the sensors.

• Standard Deviation of Wind Speed(sd_wspd)
• Mean Wind Speed(wspd)
• Standard Deviation of wind direction(sd_deg)
• Unit Vector Wind Direction(wdir)
• Wind Speed (vector averaged)(wspd_va)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Standard Deviation of wind direction(sd_deg)
• Unit Vector Wind Direction(wdir)

SGP/SMOS/E1 - E1 SMOS Wind Speed and Direction values suspect

Wind speed and direction sensors had ice accumulation resulting in data values being 
incorrect.  Incorrect values were reported from 01/28 at 23:32z through 01/29 00:31z.

• Time of Minimum Wind Speed(time_min_wspd)
• Minimum of Wind speed(min_wspd)
• Time of Maximum Wind Speed(time_max_wspd)
• maximum wind speed (gusts)(max_wspd)

SGP/SMOS/E1 - E1 SMOS DAILY DATA VALUES SUSPECT

Daily data values suspect due to values being off scale from 02/27/2001 @ 21:44Z through 
02/28/2001 @ 00:41Z during routine maintenance.

• Minimum Relative Humidity(min_rh)
• Maximum Snow Depth(max_snow)
• Minimum Temperature(min_temp)
• Time of Minimum Wind Speed(time_min_wspd)
• Minimum Barometric Pressure(min_bar_pres)
• Minimum Snow Depth(min_snow_depth)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Maximum Temperature(max_temp)
• Maximum Relative Humidity(max_rh)
• Minimum Vapor Pressure(min_vap_pres)
• Time of Minimum Snow Depth(time_min_snow)
• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Time of Maximum Snow Depth(time_max_snow)
• Maximum Barometric Pressure(max_bar_pres)
• Time of Minimum Temperature(time_min_temp)
• Maximum Vapor Pressure(max_vap_pres)
• Minimum of Wind speed(min_wspd)
• Time of Maximum Wind Speed(time_max_wspd)
• maximum wind speed (gusts)(max_wspd)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Time of Maximum Temperature(time_max_temp)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Time of Minimum Relative Humidity(time_min_rh)

SGP/SMOS/E1 - E1 SMOS RH VALUES INCORRECT

Rh% values reported as -69999.  Reason unknown, suspect loose wire.

• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Relative Humidity(sd_rh)

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)

SGP/SMOS/E1 - E1 SMOS DAILY RH DATA SUSPECT

Daily Rh and VP data suspect due to reporting of -69999 values from 14:33Z - 15:01Z.

• Minimum Relative Humidity(min_rh)
• Minimum Vapor Pressure(min_vap_pres)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Maximum Relative Humidity(max_rh)
• Time of Minimum Relative Humidity(time_min_rh)

SGP/SMOS/E1 - E1 SMOS ALL DATA VALUES OFF SCALE

All data values off scale due to routine maintenance.

• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Unit Vector Wind Direction(wdir)
• Mean Wind Speed(wspd)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Standard Deviation of Relative Humidity(sd_rh)
• barometric pressure(bar_pres)
• Beam 0 Temperature(temp)
• Snow Depth Sensor(snow_sen)
• Vapor Pressure (kiloPascals)(vap_pres)
• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of Wind Speed(sd_wspd)
• Snow Depth(snow)
• Standard Deviation of wind direction(sd_deg)
• Relative humidity inside the instrument enclosure(rh)
• Hourly precipitation(precip)

• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Mean Wind Speed(wspd)
• barometric pressure(bar_pres)
• Hourly precipitation(precip)
• Standard Deviation of wind direction(sd_deg)
• Unit Vector Wind Direction(wdir)
• Beam 0 Temperature(temp)
• Wind Speed (vector averaged)(wspd_va)

SGP/SIRS/C1 - Reprocess: Wire are switched

Upwelling longwave and downwelling longwave values are switched.  Instrument Engineering 
logs (OMIS) indicate the following:  "T/S indicated that the readings may be caused by the 
sensor wires being switched around.  Switched the wires labeled 5H with the wire labeled 
5L on the data logger.  The readings on the DIR went from minus readings to positive 
readings.  Will await further instruction from site scientist to perform any other PM".

• Down-welling pyrgeometer thermopile voltage(down_long_hemisp)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)

SGP/SMOS/E1 - E1 SMOS RH% VALUES SUSPECT

RH% values approximately 10% high at values of 70% and higher.  Sensor replaced.

• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)

• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Relative Humidity(sd_rh)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Relative humidity inside the instrument enclosure(rh)

• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of Relative Humidity(sd_rh)

• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)

SGP/SMOS/E1 - E1 SMOS DAILY RH% VALUES SUSPECT

Daily RH% values suspect.  Sensor reporting approximately 10% high at 70% and above.  
Sensor replaced.

• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Minimum Relative Humidity(min_rh)
• Maximum Relative Humidity(max_rh)
• Time of Minimum Relative Humidity(time_min_rh)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Minimum Vapor Pressure(min_vap_pres)
• Time of Maximum Relative Humidity(time_max_rh)

SGP/SMOS/E1 - E1 SMOS DATA VALUES OFF SCALE

All data values off-scale during replacement of T/RH probe.

• Beam 0 Temperature(temp)
• Relative humidity inside the instrument enclosure(rh)
• Unit Vector Wind Direction(wdir)
• Mean Wind Speed(wspd)
• Hourly precipitation(precip)
• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of wind direction(sd_deg)
• barometric pressure(bar_pres)
• Wind Speed (vector averaged)(wspd_va)

• Standard Deviation of Wind Speed(sd_wspd)
• Relative humidity inside the instrument enclosure(rh)
• Snow Depth Sensor(snow_sen)
• Hourly precipitation(precip)
• Unit Vector Wind Direction(wdir)
• Standard Deviation of Air Temperature(sd_temp)
• Snow Depth(snow)
• barometric pressure(bar_pres)
• Vapor Pressure (kiloPascals)(vap_pres)
• Mean Wind Speed(wspd)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of Relative Humidity(sd_rh)
• Beam 0 Temperature(temp)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Standard Deviation of wind direction(sd_deg)

• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Relative Humidity(sd_rh)
• barometric pressure(bar_pres)
• Snow Depth Sensor(snow_sen)
• Vapor Pressure (kiloPascals)(vap_pres)
• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of Wind Speed(sd_wspd)
• Standard Deviation of wind direction(sd_deg)
• Relative humidity inside the instrument enclosure(rh)
• Hourly precipitation(precip)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Unit Vector Wind Direction(wdir)
• Mean Wind Speed(wspd)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Beam 0 Temperature(temp)
• Snow Depth(snow)

• Mean Wind Speed(wspd)
• Hourly precipitation(precip)
• Vapor Pressure (kiloPascals)(vap_pres)
• Beam 0 Temperature(temp)
• Standard Deviation of wind direction(sd_deg)
• Relative humidity inside the instrument enclosure(rh)
• Wind Speed (vector averaged)(wspd_va)
• Unit Vector Wind Direction(wdir)
• barometric pressure(bar_pres)

SGP/SMOS/E1 - E1 SMOS DAILY DATA VALUES SUSPECT

Daily data values suspect due to all values being off-scale from 18:30 - 19:01z during 
T/RH probe replacement.

• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Time of Minimum Snow Depth(time_min_snow)
• Maximum Relative Humidity(max_rh)
• Minimum Relative Humidity(min_rh)
• Time of Maximum Wind Speed(time_max_wspd)
• Time of Maximum Temperature(time_max_temp)
• Time of Maximum Snow Depth(time_max_snow)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Minimum Temperature(time_min_temp)
• Minimum Barometric Pressure(min_bar_pres)
• Minimum Temperature(min_temp)
• maximum wind speed (gusts)(max_wspd)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Maximum Snow Depth(max_snow)
• Minimum of Wind speed(min_wspd)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Maximum Barometric Pressure(max_bar_pres)
• Maximum Temperature(max_temp)
• Minimum Vapor Pressure(min_vap_pres)
• Minimum Snow Depth(min_snow_depth)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Wind Speed(time_min_wspd)

SGP/SMOS/E1 - E1 SMOS SNOW DEPTH DATA INCORRECT

New program reads snow depth data when no sensor is in place.  Values near 1539 mm read as 
offset.

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• Time of Minimum Snow Depth(time_min_snow)
• Maximum Snow Depth(max_snow)
• Time of Maximum Snow Depth(time_max_snow)
• Minimum Snow Depth(min_snow_depth)

SGP/SMOS/E1 - E1 SMOS SNOW DEPTH DATA QUESTIONABLE

Snow depth readings intermittently reported outside of the manufacturer's tolerance of +/- 
25mm.

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• Time of Minimum Snow Depth(time_min_snow)
• Maximum Snow Depth(max_snow)
• Time of Maximum Snow Depth(time_max_snow)
• Minimum Snow Depth(min_snow_depth)

TWP/SMET/C1/C2 - Switch to new Data Header Formats not timely

On April 1, 2001 at 00:00:00 new data header with consistent variable naming conventions, 
etc were to be used for all sites, all data streams.  At the TWP sites the time of the 
movement to the new convention did not occur precisely at 00:00:00.  The following data 
files contain between 40 seconds and 20 minutes of data from 4/1/02 in the old format.  The 
delayed format change did not affect data quality in any way.

twpsmet60sC1.a1.20010401.000001.cdf
twpsmet60sC1.b1.20010401.000001.cdf
twpsmet60sC2.a1.20010401.000000.cdf
twpsmet60sC2.b1.20010401.000000.cdf

• Battery Voltage(internal_voltage)
• base time(base_time)
• Logger panel temperature(logger_temp)
• Tipping bucket raingauge count total(tbrg_count_total)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Lower sensor, wind speed minimum(lo_spd_min)
• Lower sensor, wind direction vector average(lo_dir_vec_avg)
• Upper sensor, wind speed arithmetic average(up_spd_arith_avg)
• precipitation minimum(precip_min)
• Precipitation maximum(precip_max)
• Dummy altitude for Zeb(alt)
• Lower sensor, wind direction standard deviation(lo_dir_sd)
• Upper sensor, wind speed minimum(up_spd_min)
• Upper sensor, wind direction standard deviation(up_dir_sd)
• Upper sensor, wind direction vector average(up_dir_vec_avg)
• Tipping bucket raingauge total(tbrg_total)
• Vapor pressure standard deviation(vappress_sd)
• Mean Relative Humidity(relh_mean)
• Mean Air Temperature or Hardware Error(temp_mean)
• Lower sensor, wind speed standard deviation(lo_spd_sd)
• Upper sensor, wind speed standard deviation(up_spd_sd)
• time(time)
• lon(lon)
• Upper sensor, wind speed vector average(up_spd_vec_avg)
• lat(lat)
• Lower sensor, wind speed maximum(lo_spd_max)
• Precipitation mean(precip_mean)
• Std Dev of Air Temperature(temp_sd)
• Lower sensor, wind speed arithmetic average(lo_spd_arith_avg)
• Time offset of tweaks from base_time(time_offset)
• Vapor pressure mean(vappress_mean)
• Precipitation standard deviation(precip_sd)
• Barometric Pressure(atmos_pressure)
• Lower sensor, wind speed vector average(lo_spd_vec_avg)
• Upper sensor, wind speed maximum(up_spd_max)

• Upper sensor, wind speed maximum(up_spd_max)
• base time(base_time)
• Lower sensor, wind speed arithmetic average(lo_spd_arith_avg)
• Lower sensor, wind speed maximum(lo_spd_max)
• precipitation minimum(precip_min)
• Battery Voltage(internal_voltage)
• Precipitation standard deviation(precip_sd)
• Upper sensor, wind speed minimum(up_spd_min)
• Upper sensor, wind direction standard deviation(up_dir_sd)
• Upper sensor, wind speed vector average(up_spd_vec_avg)
• Time offset of tweaks from base_time(time_offset)
• Tipping bucket raingauge total(tbrg_total)
• Lower sensor, wind direction vector average(lo_dir_vec_avg)
• Dummy altitude for Zeb(alt)
• Logger panel temperature(logger_temp)
• Upper sensor, wind speed standard deviation(up_spd_sd)
• Vapor pressure mean(vappress_mean)
• Lower sensor, wind speed minimum(lo_spd_min)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Barometric Pressure(atmos_pressure)
• Vapor pressure standard deviation(vappress_sd)
• lat(lat)
• time(time)
• Precipitation maximum(precip_max)
• Upper sensor, wind direction vector average(up_dir_vec_avg)
• Lower sensor, wind direction standard deviation(lo_dir_sd)
• Mean Relative Humidity(relh_mean)
• Mean Air Temperature or Hardware Error(temp_mean)
• Upper sensor, wind speed arithmetic average(up_spd_arith_avg)
• lon(lon)
• Lower sensor, wind speed standard deviation(lo_spd_sd)
• Tipping bucket raingauge count total(tbrg_count_total)
• Std Dev of Air Temperature(temp_sd)
• Lower sensor, wind speed vector average(lo_spd_vec_avg)
• Precipitation mean(precip_mean)

• Wind #1 direction standard deviation(wind1_dir_sd)
• Wind #2 speed vector average(wind2_spd_vec_avg)
• Wind #1 speed maximum(wind1_spd_max)
• Wind #1 speed standard deviation(wind1_spd_sd)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Precipitation mean(precip_mean)
• base time(base_time)
• Vapor pressure standard deviation(vappress_sd)
• Wind #2 speed maximum(wind2_spd_max)
• Time offset of tweaks from base_time(time_offset)
• precipitation minimum(precip_min)
• lon(lon)
• Wind #2 direction vector average(wind2_dir_vec_avg)
• External voltage(external_voltage)
• Battery Voltage(internal_voltage)
• Wind #2 speed standard deviation(wind2_spd_sd)
• Wind #1 speed vector average(wind1_spd_vec_avg)
• Precipitation maximum(precip_max)
• Mean Air Temperature or Hardware Error(temp_mean)
• Dummy altitude for Zeb(alt)
• Temperature maximum(temp_max)
• Wind #1 speed maximum gust(wind1_spd_max_gust)
• Wind #2 direction standard deviation(wind2_dir_sd)
• Relative humidity minimum(relh_min)
• Wind #1 speed minimum(wind1_spd_min)
• Logger panel temperature(logger_temp)
• Bit data. See details.(bit_data)
• Temperature minimum(temp_min)
• Barometric Pressure(atmos_pressure)
• Wind #1 direction vector average(wind1_dir_vec_avg)
• Wind #2 speed maximum gust(wind2_spd_max_gust)
• Precipitation standard deviation(precip_sd)
• Wind #1 speed arithmetic average(wind1_spd_arith_avg)
• Wind #2 speed minimum(wind2_spd_min)
• Relative humidity maximum(relh_max)
• Vapor pressure mean(vappress_mean)
• Mean Relative Humidity(relh_mean)
• Std Dev of Air Temperature(temp_sd)
• Wind #2 speed arithmetic average(wind2_spd_arith_avg)
• lat(lat)

• Dummy altitude for Zeb(alt)
• Wind #1 speed maximum(wind1_spd_max)
• Battery Voltage(internal_voltage)
• Std Dev of Air Temperature(temp_sd)
• base time(base_time)
• Mean Air Temperature or Hardware Error(temp_mean)
• Wind #2 speed maximum(wind2_spd_max)
• Barometric Pressure(atmos_pressure)
• Wind #1 speed arithmetic average(wind1_spd_arith_avg)
• Mean Relative Humidity(relh_mean)
• lat(lat)
• Temperature maximum(temp_max)
• Wind #2 direction vector average(wind2_dir_vec_avg)
• Vapor pressure standard deviation(vappress_sd)
• Wind #2 speed vector average(wind2_spd_vec_avg)
• Wind #2 speed standard deviation(wind2_spd_sd)
• Wind #1 speed vector average(wind1_spd_vec_avg)
• Logger panel temperature(logger_temp)
• Wind #1 speed standard deviation(wind1_spd_sd)
• Time offset of tweaks from base_time(time_offset)
• Bit data. See details.(bit_data)
• Vapor pressure mean(vappress_mean)
• Temperature minimum(temp_min)
• Precipitation standard deviation(precip_sd)
• Relative humidity minimum(relh_min)
• precipitation minimum(precip_min)
• Wind #2 speed maximum gust(wind2_spd_max_gust)
• Wind #2 speed arithmetic average(wind2_spd_arith_avg)
• Wind #1 speed minimum(wind1_spd_min)
• Wind #1 speed maximum gust(wind1_spd_max_gust)
• Precipitation maximum(precip_max)
• Wind #2 direction standard deviation(wind2_dir_sd)
• External voltage(external_voltage)
• Wind #1 direction standard deviation(wind1_dir_sd)
• Wind #2 speed minimum(wind2_spd_min)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Wind #1 direction vector average(wind1_dir_vec_avg)
• lon(lon)
• Precipitation mean(precip_mean)
• Relative humidity maximum(relh_max)

SGP - Best Estimate Flux VAP files

The Best Estimate Flux VAP uses input from the 3 radiometer platforms located
at the SGP Central Facility to determine the best estimate of the various
broadband irradiance measurements. Prior to the installation and operation of
the 3rd set of radiometers at the SGP CF, a data set spanning 19950519 -
19970321 has been produced manually, and made available to the ARM community
via the ARM Archive. The purpose of this DQR is to notify users of the above
date range that covers the period the Best Estimate was manually produced, and
to point users to the ARM Technical Report Web page at
http://www.arm.gov/docs/documents/tech_reports/index.html for documentation on
the 'manual' methodology used, i.e. the documentation. Users should refer to
the ARM Technical Report titled 'The ARM Southern Great Plains Central Facility
Best Estimate Radiative Flux CD Presented at the April, 2002 ARM Science 
Team Meeting St. Petersburg, FL'

• Net Shortwave Surface Radiation(net_surface_radiation)
• Measurement source for down_short_diffuse_hemip(down_short_diffuse_hemisp_diff)
• Solar ZenithAngle(zenith)
• Dummy altitude for Zeb(alt)
• base time(base_time)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
• cloud narrowband albedo(albedo)
• Measurement source for up_long_hemisp(up_long_hemisp_diff)
• Flag for down_long_hemisp(down_long_hemisp_flag)
• Time offset of tweaks from base_time(time_offset)
• Measurement source for up_short_hemisp(up_short_hemisp_diff)
• lat(lat)
• lon(lon)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)
• Measurement source for down_long_hemisp(down_long_hemisp_diff)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
• Down-welling pyrgeometer thermopile voltage(down_long_hemisp)
• Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
• Flag for down_short_diffuse_hemisp(down_short_diffuse_hemisp_flag)
• Flag for short_direct_normal(short_direct_normal_flag)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Measurement source for short_direct_normal(short_direct_normal_diff)
• Flag for up_long_hemisp(up_long_hemisp_flag)
• Flag for up_short_hemisp(up_short_hemisp_flag)

SGP/SMOS/E1 - E1 SMOS SNOW DATA INCORRECT

Due to a programming error all snow depth data was reported as 0.  In effect no snow
depth data was collected.

• Maximum Snow Depth(max_snow)
• Time of Minimum Snow Depth(time_min_snow)
• Time of Maximum Snow Depth(time_max_snow)
• Minimum Snow Depth(min_snow_depth)

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

SGP/SMOS/E1 - E1 SMOS SNOW DATA INCORRECT

Due to a programming error all snow depth data was reported as 0.  In effect, no snow 
depth data were collected.

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• Time of Minimum Snow Depth(time_min_snow)
• Maximum Snow Depth(max_snow)
• Time of Maximum Snow Depth(time_max_snow)
• Minimum Snow Depth(min_snow_depth)

SGP/SMOS/E1 - Incorrect Windspeed

The E1 SMOS was lowered to the surface on 5 OCT 1999 between 1600 and 1617 GMT
to install counterweights.

• Time of Minimum Wind Speed(time_min_wspd)
• Minimum of Wind speed(min_wspd)
• Time of Maximum Wind Speed(time_max_wspd)
• maximum wind speed (gusts)(max_wspd)

• Unit Vector Wind Direction(wdir)
• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Standard Deviation of Wind Speed(sd_wspd)

• Unit Vector Wind Direction(wdir)
• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)

• null(Raw data stream - documentation not supported)

• null(Raw data stream - documentation not supported)

SGP/SMOS/E1 - Incorrect Windspeed

Apparently icing conditions caused incorrect wind speed data from the E1 SMOS
between 1200 and 2230 GMT on 29 JAN 99 and again between 2130 GMT on 30 JAN 99
and 0930 GMT om 1 FEB 99.

No other data seems to have been affected.

• Time of Minimum Wind Speed(time_min_wspd)
• Minimum of Wind speed(min_wspd)
• Time of Maximum Wind Speed(time_max_wspd)
• maximum wind speed (gusts)(max_wspd)

• Standard Deviation of Wind Speed(sd_wspd)
• Mean Wind Speed(wspd)
• Wind Speed (vector averaged)(wspd_va)

• null(Raw data stream - documentation not supported)

SGP/SMOS/E1 - Icing affected E1 SMOS wind speed

Icing conditions at E1 caused the wind speed to be questionable starting at
0600 GMT on 16 MAR 98.  By 1310 GMT, the icing caused the propellor to quit.
Recovery date and time unknown because power outage caused loss of data.  The
incorrect data and missing data are identified via other DQRs.

• Time of Minimum Wind Speed(time_min_wspd)
• Minimum of Wind speed(min_wspd)
• Time of Maximum Wind Speed(time_max_wspd)
• maximum wind speed (gusts)(max_wspd)

• Standard Deviation of Wind Speed(sd_wspd)
• Mean Wind Speed(wspd)
• Wind Speed (vector averaged)(wspd_va)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)

• null(Raw data stream - documentation not supported)

SGP/SMOS/E1 - Storage module and rain gauge damaged by lightning

The SMOS E1 storage module and rain gauge were damaged by lightning
at 0030 GMT.  All data were lost 8 JUL - 10 JUL, 2000 GMT.  Rain gauge
data were lost until the gauge was replaced on 24 JUL 96.

• Hourly precipitation(precip)

• Hourly precipitation(precip)

TWP/C1 - Incorrect elevation reported in Manus Data

(From Bill Clements) We have been using 6m MSL as the station
elevation of Momote (Manus).  This was based on information
posted near the station barometer in the Momote Weather Service
Office.  It turns out that the official WMO station elevation
for Momote is 4m MSL and the upper air elevation is 5m MSL.

All Manus instruments except the sonde station are at 4m MSL.
The sonde launching station is at 5m MSL.

• Dummy altitude for Zeb(alt)

• Dummy altitude for Zeb(alt)

• Dummy altitude for Zeb(alt)

• Dummy altitude for Zeb(alt)

• Dummy altitude for Zeb(alt)

SGP/AOS/C1 - AOS Computer Failure

The AOS computer started to experience periodic failures caused by an aging and failing 
system disk.  Replacement of the AOS computer's system disk occurred between 2-4 June 2002.

• TSI Low RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_LRH)
• TSI High RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_HRH)
• Radiance neph zero scattering coefficient(Zero530nm)
• TSI Low RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_LRH)
• Pressure difference across TSI neph.(Line8DeltaP)
• TSI High RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_HRH)
• TSI High RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_HRH)
• TSI Low RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_LRH)
• unknown(O3_Cont)
• TSI Low RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_LRH)
• TSI Low RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_LRH)
• Relative humidity in main sample manifold heater(Line11RH)
• Dummy altitude for Zeb(alt)
• Ozone offset value(O3_Offset)
• TSI Low RH Neph. 550nm reference intensity(TSISensGrn_LRH)
• TSI High RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_HRH)
• Ozone sample pressure(O3_Press)
• CLAP flow(BapFlow)
• Main Sample manifold temperature(Line11Temp)
• Room temperature(RoomTemp)
• Ozone span concentration(O3_Spn)
• Flowrate of zero air line 2(ZeroAirFlow)
• TSI Low RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_LRH)
• TSI neph. rack temperature(CabinetTemp)
• Pressure transducer V for line 3 (extra line)(Line3Vac)
• TSI Low RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_LRH)
• TSI High RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_HRH)
• TSI High RH Neph. lamp voltage(TSINephLV_HRH)
• TSI Low RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_LRH)
• TSI High RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_HRH)
• Pressure transducer V for line 4 (extra line)(Line4Vac)
• TSI Low RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_LRH)
• OPC sample flow(OPCFlow)
• TSI High RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_HRH)
• TSI Low RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_LRH)
• TSI CPC saturator temperature(CPCSaturT)
• TSI Low RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_LRH)
• TSI Low RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_LRH)
• Analog signal from PMS PCASP(OPCLaserVolt)
• Pressure difference across radiance neph.(Line6DeltaP)
• TSI Low RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_LRH)
• TSI Low RH Neph. lamp current(TSINephLC_LRH)
• TSI High RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_HRH)
• Ozone line sample temperature (omega temp. sensor)(O3_LinTemp)
• Temperature in main sample manifold heater(Line11Heater)
• CLAP reference signal(BapRef)
• Mass flow output from line 8 (neph. 2 line)(Line8Flow)
• Transmittance through CLAP filter(BapFiltr)
• Temperature in back of Whatlow(WatAmbT)
• OPC sheath(OPCSheath)
• TSI High RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_HRH)
• Ozone zero concentration(O3_Zro)
• Reference object brightness(Calib530nm)
• lat(lat)
• Ozone sample frequency(O3_Samp)
• Time offset of tweaks from base_time(time_offset)
• TSI Low RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_LRH)
• Pressure transducer V for line 6 (neph. 1 line)(Line6Vac)
• TSI High RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_HRH)
• time(time)
• TSI Low RH Neph. lamp voltage(TSINephLV_LRH)
• TSI High RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_HRH)
• Ozone line temp. from thermocouple attached to heater(O3_LinHeater)
• Main stack air flow(MainAirFlow)
• TSI CPC condensor temperature(CPCCondT)
• Temperature between racks 0 and 1(Cab_4_5_Temp)
• TSI High RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_HRH)
• TSI High RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_HRH)
• Ozone span value(O3_Span)
• Pressure transducer V for line 5 (extra line)(Line5Vac)
• TSI CPC condensor and saturator temperature difference(CPCDeltT)
• TSI High RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_HRH)
• TSI High RH Neph. lamp current(TSINephLC_HRH)
• Ozone line temperature set point(O3_SetPt)
• Temperature of line 8 air (neph. 2 line)(Line8Temp)
• base time(base_time)
• TSI High RH Neph. 550nm reference intensity(TSISensGrn_HRH)
• TSI Low RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_LRH)
• Ozone sample temperature(O3_Temp)
• TSI High RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_HRH)
• CLAP Signal(BapSignal)
• lon(lon)
• Ozone mode(O3_Mode)

• CPC Particle concentration(CPCPartConc)
• lat(lat)
• PMS PCASP Chan. 7 (0.23 micrometers < Dp < 0.26)(pa23_p26conc)
• PMS PCASP Chan. 26 (3.00 micrometers < Dp < 3.50)(pa300_p350conc)
• Temperature in sample line down of heater(SampTemp)
• PMS PCASP Chan. 0 (Dp > 10 micrometers)(Pa1000Conc)
• TSI Low RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_LRH)
• lon(lon)
• base time(base_time)
• PMS PCASP Chan. 23 1/cm^3 (2.00 micrometers < Dp < 2.30)(pa200_p230conc)
• TSI Low RH Neph. relative humidity(TSINephRHSamp_LRH)
• PMS PCASP Chan. 21 (1.60 micrometers < Dp < 1.80)(pa160_p180conc)
• PMS PCASP Chan. 9 (0.30 micrometers < Dp < 0.35)(pa30_p35conc)
• TSI Low RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_LRH)
• PMS PCASP Chan. 27 (3.50 micrometers < Dp < 4.00)(pa350_p400conc)
• PMS PCASP Chan. 13 (0.50 micrometers < Dp < 0.60)(pa50_p60conc)
• TSI High RH Neph. relative humidity(TSINephRHSamp_HRH)
• TSI Low RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_LRH)
• TSI Low RH Neph. Pressure(TSINephPres_LRH)
• Time offset of tweaks from base_time(time_offset)
• PMS PCASP Chan. 5 (0.18 micrometers < Dp < 0.20)(pa18_p20conc)
• PMS PCASP Chan. 10 (0.35 micrometers < Dp < 0.40)(pa35_p40conc)
• TSI High RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_HRH)
• Ozone concentration(Ozone)
• PMS PCASP Chan. 16 (0.80 micrometers < Dp < 0.90)(pa80_p90conc)
• TSI High RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_HRH)
• TSI Low RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_LRH)
• TSI Low RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_LRH)
• TSI Low RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_LRH)
• TSI Low RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_LRH)
• Single wave Neph. pressure(Pres530nm)
• RH upstream of humidograph(HGupstream_RH)
• PMS PCASP Chan. 30 (6.50 micrometers < Dp < 8.00)(pa650_p800conc)
• PMS PCASP Chan. 17 (0.90 micrometers < Dp < 1.00)(pa90_p100conc)
• PMS PCASP Chan. 3 (0.14 micrometers < Dp < 0.16)(pa14_p16conc)
• TSI High RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_HRH)
• TSI High RH Neph. inlet temperature(TSINephTin_HRH)
• PMS PCASP Chan. 31 (8.00 micrometers < Dp < 10.0)(pa800_p1000conc)
• TSI High RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_HRH)
• PMS PCASP Chan. 22 (1.80 micrometers < Dp < 2.00)(pa180_p200conc)
• PMS PCASP Chan. 24 (2.30 micrometers < Dp < 2.60)(pa230_p260conc)
• TSI Low RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_LRH)
• TSI Low RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_LRH)
• PMS PCASP Chan. 20 (1.40 micrometers < Dp < 1.60)(pa140_p160conc)
• PMS PCASP Chan. 14 (0.60 micrometers < Dp < 0.70)(pa60_p70conc)
• TSI Low RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_LRH)
• Outdoor air temperature(AmbTemp)
• Radiance neph. temperature(Neph530Temp)
• TSI High RH Neph. Pressure(TSINephPres_HRH)
• PMS PCASP Chan. 15 (0.70 micrometers < Dp < 0.80)(pa70_p80conc)
• TSI High RH Neph. Sample Temperature(TSINephTSamp_HRH)
• TSI Low RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_LRH)
• TSI High RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_HRH)
• PMS PCASP Chan. 2 (0.12 micrometers < Dp < 0.14)(pa12_p14conc)
• 1 um Absorption coefficient(Bap_I_1um)
• PMS PCASP Chan. 18 (1.00 micrometers < Dp < 1.30)(pa100_p130conc)
• TSI High RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_HRH)
• TSI High RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_HRH)
• Dummy altitude for Zeb(alt)
• TSI High RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_HRH)
• TSI High RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_HRH)
• TSI Low RH Neph. inlet temperature(TSINephTin_LRH)
• PMS PCASP Chan. 11 (0.35 micrometers < Dp < 0.40)(pa40_p45conc)
• PMS PCASP Chan. 29 (5.00 micrometers < Dp < 6.50)(pa500_p650conc)
• Temp. downstream of humidograph(HGdownstream_T)
• TSI Low RH Neph. Sample Temperature(TSINephTSamp_LRH)
• time(time)
• PMS PCASP Chan. 28 (4.00 micrometers < Dp < 5.00)(pa400_p500conc)
• PMS PCASP Chan. 25 (2.60 micrometers < Dp < 3.00)(pa260_p300conc)
• Relative humidity in sample line down. of heater(SampRH)
• B_sp, at 530 nm from single wave. neph.(Bscat530nm)
• TSI High RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_HRH)
• 10 um Absorption coefficient(Bap_I_10um)
• TSI High RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_HRH)
• Temp. upstream of humidograph(HGupstream_T)
• PMS PCASP Chan. 6 (0.20 micrometers < Dp < 0.23)(pa20_p23conc)
• PMS PCASP Chan. 19 (1.30 micrometers < Dp < 1.40)(pa130_p140conc)
• TSI Low RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_LRH)
• PMS PCASP Chan. 1 1/cm^3 (0.10 micrometers < Dp < 0.12)(pa10_p12conc)
• TSI High RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_HRH)
• PMS PCASP Chan. 4 (0.16 micrometers < Dp < 0.18)(pa16_p18conc)
• PMS PCASP Chan. 8 (0.26 micrometers < Dp < 0.30)(pa26_p30conc)
• RH downstream of humidograph(HGdownstream_RH)
• Single wave Neph. RH(RH530nm)
• PMS PCASP Chan. 12 (0.45 micrometers < Dp < 0.50)(pa45_p50conc)

SGP/SMOS/E1 - SNOW DEPTH DATA INCORRECT

Snow depth sensor was removed for the season.  Temperatures fell below 10 deg C causing 
the ingest program to accumulate erroneous data.

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• Time of Minimum Snow Depth(time_min_snow)
• Maximum Snow Depth(max_snow)
• Time of Maximum Snow Depth(time_max_snow)
• Minimum Snow Depth(min_snow_depth)

SGP/SMOS/E1 - Snow depth sensor removed; data reported as missing

The snow depth sensor was removed.  The program was changed to read -9999 into the data 
stream.

• Snow Depth Sensor(snow_sen)
• Snow Depth(snow)

• Snow Depth(snow)
• Snow Depth Sensor(snow_sen)

• Time of Minimum Snow Depth(time_min_snow)
• Maximum Snow Depth(max_snow)
• Time of Maximum Snow Depth(time_max_snow)
• Minimum Snow Depth(min_snow_depth)

SGP/AOS/C1 - Ozone instrument out of service

The ice storm of 30-31 January, 2002 shut down the AOS for ~2 weeks.  A controlled 
power-up of the system found a problem with the ozone monitor.  Smoke was observed to come from 
the ozone instrument, at which time it was shut down.

The ozone monitor was removed from the AOS for remote troubleshooting. The cause of the 
smoke was identified as being from underneath a printed circuit board.  At that point, Site 
Ops staff were requested to send the unit to Boulder for additional troubleshooting.  
NOAA staff received the unit on 20 February 2002.

After a brief inspection, the cause of the smoking was discovered.  A one-half inch hole 
was burned completely through the motherboard.  The determination was made that this could 
not be repaired at the NOAA facility, and a purchase order was initiated to return the 
unit to Dasibi, Inc. (the manufacturer), for repair/replacement of the motherboard.

On 4 March, 2002, NOAA personnel received the OK from ARM to return the instrument to 
Dasibi, Inc. for service.  Dasibi, Inc., received the unit on or around 8 March, 2002.  The 
manufacturer was to test the unit, repair or replace the damaged motherboard, and 
calibrate the unit according to the NIST standard protocol.

On 8 May, 2002, NOAA personnel emailed SGP Site Ops personnel and asked them to check on 
the status of the repair, which was taking longer then expected.   Upon trying to contact 
the manufacturer, it was discovered that they went out of business.  The return of 
instruments from the manufacturer to customers was being handled by a contract company.  The 
ozone monitor arrived back in Boulder, in an unrepaired state, on or about 1 July 2002.

Since there were few other options, NOAA personnel undertook the difficult task of 
repairing the motherboard.  This required the re-routing of several electrical conduits from the 
burned area in the multilayer board to other acceptable places on the board.  This took 
a considerable amount of electronics technician time and effort.  After the motherboard 
was repaired, extensive testing was required to verify that the repair was done 
successfully and that other problems were not caused in the unit by the board burning..

The repair was deemed successful on 24 September, 2002.  The unit was shipped back to the 
SGP site immediately thereafter.  It was installed during a NOAA AOS maintenance visit on 
1 October, 2002.

• Ozone sample frequency(O3_Samp)
• Ozone offset value(O3_Offset)
• Ozone sample pressure(O3_Press)
• Ozone span value(O3_Span)
• Ozone line temp. from thermocouple attached to heater(O3_LinHeater)
• Ozone sample temperature(O3_Temp)
• Ozone line temperature set point(O3_SetPt)
• Ozone span concentration(O3_Spn)
• Ozone zero concentration(O3_Zro)
• Ozone line sample temperature (omega temp. sensor)(O3_LinTemp)
• unknown(O3_Cont)
• Ozone mode(O3_Mode)

• Ozone concentration(Ozone)

TWP/SMET/C3 - Lower wind direction sensor misaligned

The lower wind direction sensor (sensor #2) was misaligned and off by 15 degrees.

• Wind #2 direction vector average(wind2_dir_vec_avg)
• Wind #2 direction standard deviation(wind2_dir_sd)

• Lower sensor, wind direction vector average(lo_dir_vec_avg)
• Lower sensor, wind direction standard deviation(lo_dir_sd)

SGP/SMOS/E1 - Wind Speed data incorrect due to icing

Wind speeds were artificially low due to icing on the sensor.

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Standard Deviation of Wind Speed(sd_wspd)

• Standard Deviation of Wind Speed(sd_wspd)
• Mean Wind Speed(wspd)
• Wind Speed (vector averaged)(wspd_va)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)

SGP/SMOS/E1 - Daily wind speed data incorrect due to icing

Wind speed data is incorrect due to icing on the sensor.

• Time of Maximum Wind Speed(time_max_wspd)
• Minimum of Wind speed(min_wspd)
• maximum wind speed (gusts)(max_wspd)
• Time of Minimum Wind Speed(time_min_wspd)

SGP/AOS/C1  - Data missing

The UPS supplying power to the AOS computer failed on Friday, 12/27/2002.  The UPS was 
repaired on Monday 12/30/2002, but the AOS computer was locked up and would not reboot.  
Telephone communication was established with Richard Eagan, ANL, who was able to do a remote 
reboot of the computer using his account.

• TSI Low RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_LRH)
• TSI High RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_HRH)
• Radiance neph zero scattering coefficient(Zero530nm)
• TSI Low RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_LRH)
• Pressure difference across TSI neph.(Line8DeltaP)
• TSI High RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_HRH)
• TSI High RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_HRH)
• TSI Low RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_LRH)
• unknown(O3_Cont)
• TSI Low RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_LRH)
• TSI Low RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_LRH)
• Relative humidity in main sample manifold heater(Line11RH)
• Dummy altitude for Zeb(alt)
• Ozone offset value(O3_Offset)
• TSI Low RH Neph. 550nm reference intensity(TSISensGrn_LRH)
• TSI High RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_HRH)
• Ozone sample pressure(O3_Press)
• CLAP flow(BapFlow)
• Main Sample manifold temperature(Line11Temp)
• Room temperature(RoomTemp)
• Ozone span concentration(O3_Spn)
• Flowrate of zero air line 2(ZeroAirFlow)
• TSI Low RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_LRH)
• TSI neph. rack temperature(CabinetTemp)
• Pressure transducer V for line 3 (extra line)(Line3Vac)
• TSI Low RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_LRH)
• TSI High RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_HRH)
• TSI High RH Neph. lamp voltage(TSINephLV_HRH)
• TSI Low RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_LRH)
• TSI High RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_HRH)
• Pressure transducer V for line 4 (extra line)(Line4Vac)
• TSI Low RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_LRH)
• OPC sample flow(OPCFlow)
• TSI High RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_HRH)
• TSI Low RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_LRH)
• TSI CPC saturator temperature(CPCSaturT)
• TSI Low RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_LRH)
• TSI Low RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_LRH)
• Analog signal from PMS PCASP(OPCLaserVolt)
• Pressure difference across radiance neph.(Line6DeltaP)
• TSI Low RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_LRH)
• TSI Low RH Neph. lamp current(TSINephLC_LRH)
• TSI High RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_HRH)
• Ozone line sample temperature (omega temp. sensor)(O3_LinTemp)
• Temperature in main sample manifold heater(Line11Heater)
• CLAP reference signal(BapRef)
• Mass flow output from line 8 (neph. 2 line)(Line8Flow)
• Transmittance through CLAP filter(BapFiltr)
• Temperature in back of Whatlow(WatAmbT)
• OPC sheath(OPCSheath)
• TSI High RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_HRH)
• Ozone zero concentration(O3_Zro)
• Reference object brightness(Calib530nm)
• lat(lat)
• Ozone sample frequency(O3_Samp)
• Time offset of tweaks from base_time(time_offset)
• TSI Low RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_LRH)
• Pressure transducer V for line 6 (neph. 1 line)(Line6Vac)
• TSI High RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_HRH)
• time(time)
• TSI Low RH Neph. lamp voltage(TSINephLV_LRH)
• TSI High RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_HRH)
• Ozone line temp. from thermocouple attached to heater(O3_LinHeater)
• Main stack air flow(MainAirFlow)
• TSI CPC condensor temperature(CPCCondT)
• Temperature between racks 0 and 1(Cab_4_5_Temp)
• TSI High RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_HRH)
• TSI High RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_HRH)
• Ozone span value(O3_Span)
• Pressure transducer V for line 5 (extra line)(Line5Vac)
• TSI CPC condensor and saturator temperature difference(CPCDeltT)
• TSI High RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_HRH)
• TSI High RH Neph. lamp current(TSINephLC_HRH)
• Ozone line temperature set point(O3_SetPt)
• Temperature of line 8 air (neph. 2 line)(Line8Temp)
• base time(base_time)
• TSI High RH Neph. 550nm reference intensity(TSISensGrn_HRH)
• TSI Low RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_LRH)
• Ozone sample temperature(O3_Temp)
• TSI High RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_HRH)
• CLAP Signal(BapSignal)
• lon(lon)
• Ozone mode(O3_Mode)

• null(Raw data stream - documentation not supported)

• CPC Particle concentration(CPCPartConc)
• lat(lat)
• PMS PCASP Chan. 7 (0.23 micrometers < Dp < 0.26)(pa23_p26conc)
• PMS PCASP Chan. 26 (3.00 micrometers < Dp < 3.50)(pa300_p350conc)
• Temperature in sample line down of heater(SampTemp)
• PMS PCASP Chan. 0 (Dp > 10 micrometers)(Pa1000Conc)
• TSI Low RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_LRH)
• lon(lon)
• base time(base_time)
• PMS PCASP Chan. 23 1/cm^3 (2.00 micrometers < Dp < 2.30)(pa200_p230conc)
• TSI Low RH Neph. relative humidity(TSINephRHSamp_LRH)
• PMS PCASP Chan. 21 (1.60 micrometers < Dp < 1.80)(pa160_p180conc)
• PMS PCASP Chan. 9 (0.30 micrometers < Dp < 0.35)(pa30_p35conc)
• TSI Low RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_LRH)
• PMS PCASP Chan. 27 (3.50 micrometers < Dp < 4.00)(pa350_p400conc)
• PMS PCASP Chan. 13 (0.50 micrometers < Dp < 0.60)(pa50_p60conc)
• TSI High RH Neph. relative humidity(TSINephRHSamp_HRH)
• TSI Low RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_LRH)
• TSI Low RH Neph. Pressure(TSINephPres_LRH)
• Time offset of tweaks from base_time(time_offset)
• PMS PCASP Chan. 5 (0.18 micrometers < Dp < 0.20)(pa18_p20conc)
• PMS PCASP Chan. 10 (0.35 micrometers < Dp < 0.40)(pa35_p40conc)
• TSI High RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_HRH)
• Ozone concentration(Ozone)
• PMS PCASP Chan. 16 (0.80 micrometers < Dp < 0.90)(pa80_p90conc)
• TSI High RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_HRH)
• TSI Low RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_LRH)
• TSI Low RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_LRH)
• TSI Low RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_LRH)
• TSI Low RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_LRH)
• Single wave Neph. pressure(Pres530nm)
• RH upstream of humidograph(HGupstream_RH)
• PMS PCASP Chan. 30 (6.50 micrometers < Dp < 8.00)(pa650_p800conc)
• PMS PCASP Chan. 17 (0.90 micrometers < Dp < 1.00)(pa90_p100conc)
• PMS PCASP Chan. 3 (0.14 micrometers < Dp < 0.16)(pa14_p16conc)
• TSI High RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_HRH)
• TSI High RH Neph. inlet temperature(TSINephTin_HRH)
• PMS PCASP Chan. 31 (8.00 micrometers < Dp < 10.0)(pa800_p1000conc)
• TSI High RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_HRH)
• PMS PCASP Chan. 22 (1.80 micrometers < Dp < 2.00)(pa180_p200conc)
• PMS PCASP Chan. 24 (2.30 micrometers < Dp < 2.60)(pa230_p260conc)
• TSI Low RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_LRH)
• TSI Low RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_LRH)
• PMS PCASP Chan. 20 (1.40 micrometers < Dp < 1.60)(pa140_p160conc)
• PMS PCASP Chan. 14 (0.60 micrometers < Dp < 0.70)(pa60_p70conc)
• TSI Low RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_LRH)
• Outdoor air temperature(AmbTemp)
• Radiance neph. temperature(Neph530Temp)
• TSI High RH Neph. Pressure(TSINephPres_HRH)
• PMS PCASP Chan. 15 (0.70 micrometers < Dp < 0.80)(pa70_p80conc)
• TSI High RH Neph. Sample Temperature(TSINephTSamp_HRH)
• TSI Low RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_LRH)
• TSI High RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_HRH)
• PMS PCASP Chan. 2 (0.12 micrometers < Dp < 0.14)(pa12_p14conc)
• 1 um Absorption coefficient(Bap_I_1um)
• PMS PCASP Chan. 18 (1.00 micrometers < Dp < 1.30)(pa100_p130conc)
• TSI High RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_HRH)
• TSI High RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_HRH)
• Dummy altitude for Zeb(alt)
• TSI High RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_HRH)
• TSI High RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_HRH)
• TSI Low RH Neph. inlet temperature(TSINephTin_LRH)
• PMS PCASP Chan. 11 (0.35 micrometers < Dp < 0.40)(pa40_p45conc)
• PMS PCASP Chan. 29 (5.00 micrometers < Dp < 6.50)(pa500_p650conc)
• Temp. downstream of humidograph(HGdownstream_T)
• TSI Low RH Neph. Sample Temperature(TSINephTSamp_LRH)
• time(time)
• PMS PCASP Chan. 28 (4.00 micrometers < Dp < 5.00)(pa400_p500conc)
• PMS PCASP Chan. 25 (2.60 micrometers < Dp < 3.00)(pa260_p300conc)
• Relative humidity in sample line down. of heater(SampRH)
• B_sp, at 530 nm from single wave. neph.(Bscat530nm)
• TSI High RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_HRH)
• 10 um Absorption coefficient(Bap_I_10um)
• TSI High RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_HRH)
• Temp. upstream of humidograph(HGupstream_T)
• PMS PCASP Chan. 6 (0.20 micrometers < Dp < 0.23)(pa20_p23conc)
• PMS PCASP Chan. 19 (1.30 micrometers < Dp < 1.40)(pa130_p140conc)
• TSI Low RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_LRH)
• PMS PCASP Chan. 1 1/cm^3 (0.10 micrometers < Dp < 0.12)(pa10_p12conc)
• TSI High RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_HRH)
• PMS PCASP Chan. 4 (0.16 micrometers < Dp < 0.18)(pa16_p18conc)
• PMS PCASP Chan. 8 (0.26 micrometers < Dp < 0.30)(pa26_p30conc)
• RH downstream of humidograph(HGdownstream_RH)
• Single wave Neph. RH(RH530nm)
• PMS PCASP Chan. 12 (0.45 micrometers < Dp < 0.50)(pa45_p50conc)

TWP/SMET/C3 - Intermittent Pressure Sensor Failure

The Barometric Pressure sensor was intermittently failing at TWP site C3 Darwin.  At times 
there were large pressure fluctuations occurring on the order of 24 mb in a few minutes. 
 Times of large pressure fluctuations are readily apparent in the data.  At these times 
the data should be carefully analyzed before determining it's usefulness.  In between the 
periods of large fluctuations the readings appear to be stable.  It is still suggested 
that independent pressure data be obtained for comparison before use.

• Barometric Pressure(atmos_pressure)

• Barometric Pressure(atmos_pressure)

TWP/SMET/C1 - Reprocess: Lower Wind Speed incorrect

The lower wind speed sensor (sensor #2) was reporting values 10 times above the actual 
value.  During an update to the logger configuration file the calibration multiplier was 
incorrectly entered.  The multiplier inserted was .97630 when it should have been .09763.  
This caused the readings from this sensor to be incorrect.

• Lower sensor, wind speed vector average(lo_spd_vec_avg)
• Lower sensor, wind speed arithmetic average(lo_spd_arith_avg)
• Lower sensor, wind speed minimum(lo_spd_min)
• Lower sensor, wind speed standard deviation(lo_spd_sd)
• Lower sensor, wind speed maximum(lo_spd_max)

• Wind #2 speed minimum(wind2_spd_min)
• Wind #2 speed arithmetic average(wind2_spd_arith_avg)
• Wind #2 speed vector average(wind2_spd_vec_avg)
• Wind #2 speed standard deviation(wind2_spd_sd)
• Wind #2 speed maximum(wind2_spd_max)
• Wind #2 speed maximum gust(wind2_spd_max_gust)

TWP/SMET/C2 - Upper wind sensor failed

The upper wind speed sensor failed.  Wind speeds were reported as 0 m/s and wind direction 
data was not in agreement with the lower wind sensor. Anemometer was replaced.

• Upper sensor, wind speed vector average(up_spd_vec_avg)
• Upper sensor, wind speed minimum(up_spd_min)
• Upper sensor, wind speed maximum(up_spd_max)
• Upper sensor, wind direction vector average(up_dir_vec_avg)
• Upper sensor, wind speed arithmetic average(up_spd_arith_avg)
• Upper sensor, wind speed standard deviation(up_spd_sd)
• Upper sensor, wind direction standard deviation(up_dir_sd)

SGP/SIRS/C1 - Missing data due to Ice storm and clock problems

Data are missing due to power failures caused by an ice storm
and resulting system/instrument clock problems.

• Clear-sky Fit Estimated Downwelling Direct Shortwave Irradiance (cdir)(dirfluxdn_clearskyfit)
• Clear-sky Fit Coefficient a to Albedo (Alba)(coef_clearsky_albedo_a)
• Measured Downwelling Global Shortwave Irradiance (gsw)(gswfluxdn_measured)
• Clear-sky Fit Estimated Downwelling Global UVB Irradiance (cguvb)(guvbdn_clearskyfit)
• Arithmetic Average Cosine of the Solar Zenith Angle Z (CosZ)(solar_cos_z)
• Site Identification(site)
• Clear-sky Fit Coefficient b to Global UVB Irradiance (UVBb)(coef_clearsky_guvb_b)
• Measured Downwelling Diffuse Shortwave Irradiance (dif)(difswfluxdn_measured)
• Clear-sky Fit Estimated Downwelling Summed Shortwave Irradiance
  (dirfluxdn_clearskyfit+diffluxdn_clearskyfit) (cssw)(sswfluxdn_clearskyfit)
• Clear-sky Fit Coefficient b to Albedo (Albb)(coef_clearsky_albedo_b)
• Clear-sky Detection Flag (clrf)(flag_clearsky_detection)
• Clear-sky Fit Coefficient b to Global Shortwave Irradiance (CSWb)(coef_clearsky_gsw_b)
• Daily Averaged Distance from the Earth to the Sun (auavg)(sun_earth_distance_dailyaverage)
• Measured Downwelling Summed Shortwave Irradiance
  (dirfluxdn_measured+diffluxdn_measured) (ssw)(sswfluxdn_measured)
• Clear-sky Fit Coefficient b to Summed Shortwave Irradiance (CSWb)(coef_clearsky_ssw_b)
• Time Offset from base_time_LST(time_offset_LST)
• Clear-sky Fit Coefficient a to Summed Shortwave Irradiance (CSWa)(coef_clearsky_ssw_a)
• lon(lon)
• Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
• Clear-sky Fit Coefficient a to Global Shortwave Irradiance (CSWa)(coef_clearsky_gsw_a)
• Clear-sky Fit Coefficient b to Diffuse Irradiance to Total Irradiance Ratio
  (DFRb)(coef_clearsky_difratio_b)
• Time offset of tweaks from base_time(time_offset)
• Arithmetic Average Distance from the Earth to the Sun (au)(sun_earth_distance)
• Dummy altitude for Zeb(alt)
• Clear-sky Fit Estimated Surface Albedo from Shortwave Irradiance Measurements
  (calb)(albedosw_clearskyfit)
• Date (YYMMDD LST) for which the Coefficients are Applicable(coef_date)
• Clear-sky Fit Coefficient a to Global UVB Irradiance (UVBa)(coef_clearsky_guvb_a)
• Measured Downwelling Global UVB Irradiance (guvb)(guvbdn_measured)
• Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)
• Clear-sky Fit Coefficient b to Global minus Summed Shortwave Irradiance
  Difference (SCORb)(coef_clearsky_dsw_b)
• Clear-sky Offset Coefficient c for Global minus Summed Shortwave Irradiance
  Difference (SCORc)(coef_clearsky_dsw_c)
• Measured Surface Albedo from Shortwave Irradiance Measurements (alb)(albedosw_measured)
• Beginning Time of File (LST)(base_time_LST)
• lat(lat)
• Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cgsw)(gswfluxdn_clearskyfit)
• Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
• base time(base_time)
• Ratio of Clear-sky Fit Estimated Downwelling Diffuse Shortwave Irradiance to
  Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cdifr)(difratiodn_clearskyfit)
• Clear-sky Fit Coefficient a to Diffuse Irradiance to Total Irradiance Ratio
  (DFRa)(coef_clearsky_difratio_a)
• Clear-sky Fit Coefficient a to Global minus Summed Shortwave Irradiance
  Difference (SCORa)(coef_clearsky_dsw_a)
• Ratio of Measured Downwelling Diffuse Shortwave Irradiance to Measured
  Downwelling Global Shortwave Irradiance (difr)(difratiodn_measured)
• Clear-sky Fit Estimated Downwelling Diffuse Field Shortwave Irradiance (cdif)(difswfluxdn_clearskyfit)
• Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured)

• Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Maxima(down_short_diffuse_hemisp_max)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
• Instantaneous Dome Temperature(inst_up_long_dome_temp)
• Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard
  Deviation(up_short_hemisp_std)
• Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Standard
  Deviation(up_long_hemisp_std)
• Dummy altitude for Zeb(alt)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
• base time(base_time)
• Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
  Pyrgeometer(inst_down_long_shaded_dome_temp)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Maxima(up_long_hemisp_max)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
• Instantaneous Case Temperature(inst_up_long_case_temp)
• Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded
  Pyrgeometer(inst_down_long_shaded_case_temp)
• lon(lon)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
  Deviation(down_short_hemisp_std)
• Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
  Deviation(down_long_hemisp_shaded_std)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
• lat(lat)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Minima(down_short_diffuse_hemisp_min)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
• Battery Voltage(vBatt)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
• Time offset of tweaks from base_time(time_offset)

• null(Raw data stream - documentation not supported)

• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard
  Deviation(up_short_hemisp_std)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
• base time(base_time)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
  Deviation(down_long_hemisp_shaded_std)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min)
• lon(lon)
• Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)
• lat(lat)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
• Dummy altitude for Zeb(alt)
• Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Time offset of tweaks from base_time(time_offset)
• Battery Voltage(vBatt)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Minima(down_short_diffuse_hemisp_min)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
  Deviation(down_short_hemisp_std)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Standard
  Deviation(up_long_hemisp_std)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Maxima(down_short_diffuse_hemisp_max)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Maxima(up_long_hemisp_max)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)

• Beginning Time of File (LST)(base_time_LST)
• Clear-sky Fit Estimated Downwelling Global UVB Irradiance (cguvb)(guvbdn_clearskyfit)
• Average over the interval of the standard deviation of difratiodn_measured
  computed using a 3-5 sample window centered at each 1-min sample(difratiodn_measured_stdev)
• lon(lon)
• Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cgsw)(gswfluxdn_clearskyfit)
• Ratio of Clear-sky Fit Estimated Downwelling Diffuse Shortwave Irradiance to
  Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cdifr)(difratiodn_clearskyfit)
• Time offset of tweaks from base_time(time_offset)
• Clear-sky Fit Estimated Downwelling Direct Shortwave Irradiance (cdir)(dirfluxdn_clearskyfit)
• Number of 1-minute Measured Downwelling Summed Shortwave Irradiances in the
  15-minute Interval (Nssw)(nsamples_sswfluxdn_measured)
• Fractional Sky Cover(cloudfraction)
• Measured Downwelling Diffuse Shortwave Irradiance (dif)(difswfluxdn_measured)
• lat(lat)
• Ratio of Measured minus Clear-sky Fit Estimated Downwelling Diffuse Shortwave
  Irradiance to Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance
  (di(difcloudeffect_normalized)
• Arithmetic Average Distance from the Earth to the Sun (au)(sun_earth_distance)
• base time(base_time)
• Time Offset from base_time_LST(time_offset_LST)
• Clear-sky Fit Estimated Downwelling Summed Shortwave Irradiance
  (dirfluxdn_clearskyfit+diffluxdn_clearskyfit) (cssw)(sswfluxdn_clearskyfit)
• Measured Downwelling Summed Shortwave Irradiance
  (dirfluxdn_measured+diffluxdn_measured) (ssw)(sswfluxdn_measured)
• Number of 1-minute Clear-sky Fit Downwelling Global Shortwave Irradiance
  Estimates in the 15-minute Interval (Ncsw)(nsamples_gswfluxdn_clearskyfit)
• Arithmetic Average Cosine of the Solar Zenith Angle Z (CosZ)(solar_cos_z)
• Site Identification(site)
• Clear-sky Fit Estimated Downwelling Diffuse Field Shortwave Irradiance (cdif)(difswfluxdn_clearskyfit)
• Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)
• Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
• Measured Downwelling Global UVB Irradiance (guvb)(guvbdn_measured)
• Number of 1-minute Clear-sky Detections in the 15-minute Interval (Nclr)(nsamples_clearsky_detection)
• Ratio of Measured Downwelling Diffuse Shortwave Irradiance to Measured
  Downwelling Global Shortwave Irradiance (difr)(difratiodn_measured)
• Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured)
• Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
• Measured Surface Albedo from Shortwave Irradiance Measurements (alb)(albedosw_measured)
• Clear-sky Fit Estimated Surface Albedo from Shortwave Irradiance Measurements
  (calb)(albedosw_clearskyfit)
• Measured Downwelling Global Shortwave Irradiance (gsw)(gswfluxdn_measured)
• Number of 1-minute Cloud Fraction Estimates in the 15-minute Interval (Ncf)(nsamples_cloudfraction)
• Dummy altitude for Zeb(alt)

• lat(lat)
• Instantaneous Upwelling Shortwave Hemispheric Irradiance, Pyranometer(inst_up_short_hemisp)
• Time offset of tweaks from base_time(time_offset)
• Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
  Pyrgeometer(inst_down_long_shaded_case_resist)
• Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
  Voltage(inst_direct_normal)
• Instantaneous Upwelling Pyrgeometer Dome Thermistor Resistance, Pyrgeometer(inst_up_long_dome_resist)
• Instantaneous Upwelling Pyrgeometer Case Thermistor Resistance, Pyrgeometer(inst_up_long_case_resist)
• lon(lon)
• Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
  Pyrgeometer(inst_down_long_shaded_dome_resist)
• Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)
• Instantaneous Upwelling Pyrgeometer Thermopile(inst_up_long_hemisp_tp)
• base time(base_time)
• Dummy altitude for Zeb(alt)
• Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
  Thermopile Voltage(inst_diffuse)
• Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
  Voltage(inst_global)

• base time(base_time)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Maxima(down_short_diffuse_hemisp_max)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Maxima(up_long_hemisp_max)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
• Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
• Instantaneous Dome Temperature(inst_up_long_dome_temp)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Minima(down_short_diffuse_hemisp_min)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Maxima(up_short_hemisp_max)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Standard
  Deviation(up_long_hemisp_std)
• Dummy altitude for Zeb(alt)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
  Deviation(down_short_hemisp_std)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
• lon(lon)
• Time offset of tweaks from base_time(time_offset)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Standard
  Deviation(up_short_hemisp_std)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min)
• Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
• Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
  Pyrgeometer(inst_down_long_shaded_dome_temp)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
• Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded
  Pyrgeometer(inst_down_long_shaded_case_temp)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)
• Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
• Battery Voltage(vBatt)
• lat(lat)
• Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer, Minima(up_short_hemisp_min)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)
• Instantaneous Case Temperature(inst_up_long_case_temp)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
  Deviation(down_long_hemisp_shaded_std)

TWP/SMET/C3 - Data reported at 15sec rather than 60s intervals

Data in these data streams should be reported at 60sec intervals, but
the logger program running during this time had the interval set to
15s.  Users will have to average the 15sec data to get 60sec data.

• Vapor pressure mean(vappress_mean)
• External voltage(external_voltage)
• Temperature minimum(temp_min)
• Precipitation standard deviation(precip_sd)
• Precipitation mean(precip_mean)
• Barometric Pressure(atmos_pressure)
• Wind #1 direction vector average(wind1_dir_vec_avg)
• Wind #2 speed standard deviation(wind2_spd_sd)
• Wind #2 speed maximum(wind2_spd_max)
• Wind #1 speed minimum(wind1_spd_min)
• Wind #1 speed arithmetic average(wind1_spd_arith_avg)
• Logger panel temperature(logger_temp)
• Std Dev of Air Temperature(temp_sd)
• Vapor pressure standard deviation(vappress_sd)
• Relative humidity maximum(relh_max)
• Mean Air Temperature or Hardware Error(temp_mean)
• Wind #1 speed maximum gust(wind1_spd_max_gust)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Mean Relative Humidity(relh_mean)
• Time offset of tweaks from base_time(time_offset)
• Relative humidity minimum(relh_min)
• Wind #2 direction standard deviation(wind2_dir_sd)
• Bit data. See details.(bit_data)
• Wind #2 direction vector average(wind2_dir_vec_avg)
• Wind #1 speed standard deviation(wind1_spd_sd)
• Wind #2 speed minimum(wind2_spd_min)
• Battery Voltage(internal_voltage)
• Wind #1 speed vector average(wind1_spd_vec_avg)
• Temperature maximum(temp_max)
• precipitation minimum(precip_min)
• Wind #2 speed arithmetic average(wind2_spd_arith_avg)
• Wind #2 speed vector average(wind2_spd_vec_avg)
• Precipitation maximum(precip_max)
• Wind #1 direction standard deviation(wind1_dir_sd)
• Wind #1 speed maximum(wind1_spd_max)
• Wind #2 speed maximum gust(wind2_spd_max_gust)

• Lower sensor, wind speed minimum(lo_spd_min)
• time(time)
• Time offset of tweaks from base_time(time_offset)
• Precipitation maximum(precip_max)
• Battery Voltage(internal_voltage)
• Tipping bucket raingauge total(tbrg_total)
• Mean Air Temperature or Hardware Error(temp_mean)
• Lower sensor, wind speed arithmetic average(lo_spd_arith_avg)
• Barometric Pressure(atmos_pressure)
• Lower sensor, wind speed maximum(lo_spd_max)
• Mean Relative Humidity(relh_mean)
• Upper sensor, wind direction vector average(up_dir_vec_avg)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Precipitation standard deviation(precip_sd)
• Upper sensor, wind speed minimum(up_spd_min)
• Tipping bucket raingauge count total(tbrg_count_total)
• Upper sensor, wind speed vector average(up_spd_vec_avg)
• Logger panel temperature(logger_temp)
• Lower sensor, wind direction standard deviation(lo_dir_sd)
• precipitation minimum(precip_min)
• Upper sensor, wind speed maximum(up_spd_max)
• Upper sensor, wind direction standard deviation(up_dir_sd)
• Vapor pressure mean(vappress_mean)
• Lower sensor, wind speed standard deviation(lo_spd_sd)
• Vapor pressure standard deviation(vappress_sd)
• Upper sensor, wind speed arithmetic average(up_spd_arith_avg)
• Lower sensor, wind speed vector average(lo_spd_vec_avg)
• Precipitation mean(precip_mean)
• Lower sensor, wind direction vector average(lo_dir_vec_avg)
• Upper sensor, wind speed standard deviation(up_spd_sd)
• Std Dev of Air Temperature(temp_sd)

SGP/AOS/C1 - Ozone Instrument removed for repair

The ozone instrument was removed for calibration on 2003 11/21.  It was shipped to Boulder 
and was cleaned and calibrated.  It was sent back to SGP on 2003 12/02, but was damaged 
in transit by FedEx.  The instrument was reinstalled on 2003 12/03 but was found to be 
defective.  Large spikes were observed in the data.  Afetr a few days the instrument was 
removed and shipped to a vendor for repair.  The ozone monitor was returned to service 
after repair at 2004 01/27 (2208 GMT).

• Ozone sample frequency(O3_Samp)
• Ozone offset value(O3_Offset)
• Ozone sample pressure(O3_Press)
• Ozone span value(O3_Span)
• Ozone line temp. from thermocouple attached to heater(O3_LinHeater)
• Ozone sample temperature(O3_Temp)
• Ozone line temperature set point(O3_SetPt)
• Ozone span concentration(O3_Spn)
• Ozone zero concentration(O3_Zro)
• Ozone line sample temperature (omega temp. sensor)(O3_LinTemp)
• unknown(O3_Cont)
• Ozone mode(O3_Mode)

• Ozone concentration(Ozone)

SGP/SMOS/E1 - 6-month Calibration Checks

During the time periods specified, the SMOS.E1 tower was
lowered for 6-month Calibration Checks.   During these times 
wind data are incorrect and temperature and humidity data 
may be incorrect.

Note, exact times when tower was down or maintenance was
being performed is sometimes unknown.  Users should use
the remaining data from these days with caution.

• Minimum Temperature(min_temp)
• Time of Minimum Wind Speed(time_min_wspd)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Maximum Relative Humidity(max_rh)
• Minimum Vapor Pressure(min_vap_pres)
• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Time of Maximum Wind Speed(time_max_wspd)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Minimum Relative Humidity(min_rh)
• Minimum Barometric Pressure(min_bar_pres)
• Time of Maximum Relative Humidity(time_max_rh)
• Maximum Temperature(max_temp)
• Maximum Barometric Pressure(max_bar_pres)
• Time of Minimum Temperature(time_min_temp)
• Maximum Vapor Pressure(max_vap_pres)
• Minimum of Wind speed(min_wspd)
• maximum wind speed (gusts)(max_wspd)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Time of Maximum Temperature(time_max_temp)
• Time of Minimum Relative Humidity(time_min_rh)

• Standard Deviation of Air Temperature(sd_temp)
• Unit Vector Wind Direction(wdir)
• Mean Wind Speed(wspd)
• Standard Deviation of Relative Humidity(sd_rh)
• barometric pressure(bar_pres)
• Beam 0 Temperature(temp)
• Vapor Pressure (kiloPascals)(vap_pres)
• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of Wind Speed(sd_wspd)
• Standard Deviation of wind direction(sd_deg)
• Relative humidity inside the instrument enclosure(rh)

• Vapor Pressure (kiloPascals)(vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Mean Wind Speed(wspd)
• barometric pressure(bar_pres)
• Standard Deviation of wind direction(sd_deg)
• Unit Vector Wind Direction(wdir)
• Beam 0 Temperature(temp)
• Wind Speed (vector averaged)(wspd_va)

SGP/SMOS/E1 - 6-month Calibration Checks

During the time periods specified, the SMOS.E1 tower was
lowered for 6-month Calibration Checks.   During these times 
wind data are incorrect and temperature and humidity data 
may be incorrect.
   
Note, exact times when tower was down or maintenance was
being performed is sometimes unknown.  Users should use
the remaining data from these days with caution.

• Beam 0 Temperature(temp)
• Relative humidity inside the instrument enclosure(rh)
• Unit Vector Wind Direction(wdir)
• Mean Wind Speed(wspd)
• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of wind direction(sd_deg)
• barometric pressure(bar_pres)
• Wind Speed (vector averaged)(wspd_va)

• Standard Deviation of Wind Speed(sd_wspd)
• Relative humidity inside the instrument enclosure(rh)
• Unit Vector Wind Direction(wdir)
• Standard Deviation of Air Temperature(sd_temp)
• barometric pressure(bar_pres)
• Vapor Pressure (kiloPascals)(vap_pres)
• Mean Wind Speed(wspd)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of Relative Humidity(sd_rh)
• Beam 0 Temperature(temp)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Standard Deviation of wind direction(sd_deg)

• Standard Deviation of Air Temperature(sd_temp)
• Standard Deviation of Relative Humidity(sd_rh)
• barometric pressure(bar_pres)
• Vapor Pressure (kiloPascals)(vap_pres)
• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of Wind Speed(sd_wspd)
• Standard Deviation of wind direction(sd_deg)
• Relative humidity inside the instrument enclosure(rh)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Unit Vector Wind Direction(wdir)
• Mean Wind Speed(wspd)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Beam 0 Temperature(temp)

• Mean Wind Speed(wspd)
• Vapor Pressure (kiloPascals)(vap_pres)
• Beam 0 Temperature(temp)
• Standard Deviation of wind direction(sd_deg)
• Relative humidity inside the instrument enclosure(rh)
• Wind Speed (vector averaged)(wspd_va)
• Unit Vector Wind Direction(wdir)
• barometric pressure(bar_pres)

• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Minimum Relative Humidity(min_rh)
• Time of Maximum Temperature(time_max_temp)
• Minimum Vapor Pressure(min_vap_pres)
• Time of Maximum Wind Speed(time_max_wspd)
• Time of Minimum Relative Humidity(time_min_rh)
• maximum wind speed (gusts)(max_wspd)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Minimum Temperature(time_min_temp)
• Minimum Barometric Pressure(min_bar_pres)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Maximum Barometric Pressure(max_bar_pres)
• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Maximum Relative Humidity(max_rh)
• Minimum Temperature(min_temp)
• Minimum of Wind speed(min_wspd)
• Maximum Vapor Pressure(max_vap_pres)
• Maximum Temperature(max_temp)
• Time of Minimum Wind Speed(time_min_wspd)

SGP/SMOS/E1 - 6-month Calibration Checks

During the time periods specified, the SMOS.E1 tower was lowered for 6-month Calibration 
Checks.   During these times wind data are incorrect and temperature and humidity data may 
be incorrect.

Note, exact times when tower was down or maintenance was being performed is sometimes 
unknown.  Users should use the remaining data from these days with caution.

• Beam 0 Temperature(temp)
• Relative humidity inside the instrument enclosure(rh)
• Vapor Pressure (kiloPascals)(vap_pres)
• Standard Deviation of wind direction(sd_deg)
• Unit Vector Wind Direction(wdir)
• barometric pressure(bar_pres)
• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)

• Standard Deviation of Wind Speed(sd_wspd)
• barometric pressure(bar_pres)
• Vapor Pressure (kiloPascals)(vap_pres)
• Mean Wind Speed(wspd)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Relative humidity inside the instrument enclosure(rh)
• Wind Speed (vector averaged)(wspd_va)
• Standard Deviation of Relative Humidity(sd_rh)
• Beam 0 Temperature(temp)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Standard Deviation of wind direction(sd_deg)
• Unit Vector Wind Direction(wdir)
• Standard Deviation of Air Temperature(sd_temp)

• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Maximum Relative Humidity(max_rh)
• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Maximum Vapor Pressure(max_vap_pres)
• Minimum Temperature(min_temp)
• Maximum Temperature(max_temp)
• Maximum Barometric Pressure(max_bar_pres)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Minimum Barometric Pressure(min_bar_pres)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Maximum Vapor Pressure(time_max_vap_pres)
• Minimum Relative Humidity(min_rh)
• Time of Minimum Wind Speed(time_min_wspd)
• Time of Maximum Wind Speed(time_max_wspd)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Maximum Temperature(time_max_temp)
• Minimum Vapor Pressure(min_vap_pres)
• maximum wind speed (gusts)(max_wspd)
• Time of Minimum Temperature(time_min_temp)
• Minimum of Wind speed(min_wspd)

SGP/SIRS/C1 - Discrepancy between measured and derived downwelling shortwave hemispheric

Measured values of downwelling hemispheric shortwave radiation were up to 40 W/m^2 higher 
than derived values during the afternoon hours.

Analysis reveals that this is likely an artifact of the cosine response of the particular 
installed PSP coupled with typical uncertainties of this set of installed radiometers.   
That is, this particular instrument cluster seems to be producing cumulative errors on 
the high side of accepted values.

The PSP contains the most uncertainty in measurement at this station. Users should use a 
derived value for the downwelling shortwave hemispheric irradiance (DS). Where DS = 
diffuse component + direct normal * cos(SZA) component described in the SIRS handbook Sec 7.2 
available at: http://www.arm.gov/publications/tech_reports/handbooks/sirs_handbook.pdf

• Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Standard
  Deviation(down_short_hemisp_std)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Minima(down_short_hemisp_min)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Maxima(down_short_diffuse_hemisp_max)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Minima(down_short_diffuse_hemisp_min)
• Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
• Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyranometer, Maxima(down_short_hemisp_max)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)

• Instantaneous Downwelling Hemispheric Shortwave, Unshaded Pyranometer Thermopile
  Voltage(inst_global)
• Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
  Thermopile Voltage(inst_diffuse)
• Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
  Voltage(inst_direct_normal)

TWP/SMET/C2 - Lower wind sensor failure

The lower wind sensor failed.  Wind direction showed little or no variation, unlike the 
co-located/upper sensor.  This caused depressed wind speed values as the sensor was not 
rotating properly to orient itself parallel to the wind stream.  The sensor was replaced.

• Lower sensor, wind speed minimum(lo_spd_min)
• Lower sensor, wind speed arithmetic average(lo_spd_arith_avg)
• Lower sensor, wind speed maximum(lo_spd_max)
• Lower sensor, wind speed vector average(lo_spd_vec_avg)
• Lower sensor, wind speed standard deviation(lo_spd_sd)
• Lower sensor, wind direction vector average(lo_dir_vec_avg)
• Lower sensor, wind direction standard deviation(lo_dir_sd)

TWP/SMET/C1 - Poor Performing Sensor

On 4/23/2004 condensation was found inside the target area of the ORG lens. A spare was 
sent and installed but did not solve the problem of high background voltage values causing 
rainrate values to be recorded during no rainfall.  Values range anywhere from 0.06 to 
0.12 mm/hr.  

A new Optical Rain Gage was installed on 01/19/2005 @ 13:30 GMT alleviating the high 
background voltage values that lead to consistent rainfall rates of around 0.11 to 0.15 mm/hr 
on a consistent basis.  

The formula used to calculate rainfall rates from the new Optical Rain Gage is:  RR 
(mm/hr) = 25(V^1.87) - 0.15.

Older model formula = 20(V^2) - 0.05

The two formulas result in comparable data.

• Precipitation mean(precip_mean)
• Precipitation maximum(precip_max)
• Precipitation standard deviation(precip_sd)
• precipitation minimum(precip_min)

SGP/RWP/I1/I2/I3 - Metadata errors

The latitude, longitude and altitude of the Intermediate Facility
915RWPs were incorrectly entered into the ARM database.

The correct location of the SGP.I1 915RWP is:
   Lat: 37.626N
   Lon: 96.538W
   Alt:    478m

The correct location of the SGP.I2 915RWP is:
   Lat: 37.280N
   Lon: 98.933W
   Alt:    616m

The correct location of the SGP.I3 915RWP is:
   Lat: 35.551N
   Lon: 96.864W
   Alt:    275m

• lon(lon)
• Dummy altitude for Zeb(alt)
• lat(lat)

• lon(lon)
• lat(lat)
• Dummy altitude for Zeb(alt)

• lat(lat)
• Dummy altitude for Zeb(alt)
• lon(lon)

• Dummy altitude for Zeb(alt)
• lat(lat)
• lon(lon)

• lon(lon)
• lat(lat)
• Dummy altitude for Zeb(alt)

• lat(lat)
• lon(lon)
• Dummy altitude for Zeb(alt)

• lon(lon)
• Dummy altitude for Zeb(alt)
• lat(lat)

• lon(lon)
• lat(lat)
• Dummy altitude for Zeb(alt)

• Dummy altitude for Zeb(alt)
• lat(lat)
• lon(lon)

• lat(lat)
• lon(lon)
• Dummy altitude for Zeb(alt)

• Dummy altitude for Zeb(alt)
• lat(lat)
• lon(lon)

• Dummy altitude for Zeb(alt)
• lon(lon)
• lat(lat)

• lat(lat)
• lon(lon)
• Dummy altitude for Zeb(alt)

• lon(lon)
• lat(lat)
• Dummy altitude for Zeb(alt)

• Dummy altitude for Zeb(alt)
• lat(lat)
• lon(lon)

• Dummy altitude for Zeb(alt)
• lat(lat)
• lon(lon)

• lon(lon)
• Dummy altitude for Zeb(alt)
• lat(lat)

• Dummy altitude for Zeb(alt)
• lon(lon)
• lat(lat)

TWP/SMET/C3 - Rain blocked pressure port

Atmospheric pressure values were suspect due to anomolous readings during heavy rain 
events.  Suspect blockage of port due to rainfall.  New logger and enclosure corrected problem.

• Barometric Pressure(atmos_pressure)

TWP/SMET/C2 - connection and timing issues with new logger

Atmospheric pressure data are intermittent during this time period due to connection 
problems and program timing issues with new logger installation.  Data resumed normal 
operations after this time period.

• Barometric Pressure(atmos_pressure)

TWP/SMET/C2 - Negative rainfall rates

Due to limitations of the Zeno dataloggers all voltage measurements
from the optical rain gauge (ORG) were converted to rainfall rates. 
This resulted in negative values for rain rates.  Any value below
0.10 mm/hr should be considered to be 0 mm/hr.  New dataloggers 
alleviated this problem.

• Precipitation maximum(precip_max)
• Precipitation mean(precip_mean)
• precipitation minimum(precip_min)
• Precipitation standard deviation(precip_sd)

TWP/SMET/C3 - Negative rainfall rates

Due to limitations of the Zeno dataloggers all voltage measurements
from the optical rain gauge (ORG) were converted to rainfall rates. 
This resulted in negative values for rain rates.  Any value below
0.10 mm/hr should be considered to be 0 mm/hr.  New dataloggers 
alleviated this problem.

• Precipitation mean(precip_mean)
• Precipitation maximum(precip_max)
• Precipitation standard deviation(precip_sd)
• precipitation minimum(precip_min)

TWP/SMET/C2 - Incorrect rainrate equation used.

There are two different Optical Raingages in use at the TWP sites.  The incorrect equation 
was used at this site.  The incorrect equation is (25*(V^1.87)) - 0.15.
The correct equation is (20*(V^2)) - 0.05.  The correct equation was installed.

• Precipitation maximum(precip_max)
• Precipitation mean(precip_mean)
• precipitation minimum(precip_min)
• Precipitation standard deviation(precip_sd)

TWP/SMET/C1 - Incorrect rainrate equation used

There are two different Optical Raingages in use at the TWP sites.  The incorrect equation 
was used at this site.  The incorrect equation is (25*(V^1.87)) - 0.15.
The correct equation is (20*(V^2)) - 0.05.  The correct equation was installed.

• Precipitation mean(precip_mean)
• Precipitation maximum(precip_max)
• Precipitation standard deviation(precip_sd)
• precipitation minimum(precip_min)

SGP/SIRS/C1/E13 - Incorrect calibration coefficients

After the DIR changeout on 8/27, the DLH measurements at the central facility vary 
significantly between pyrgeometers by as much as 65 Wm^(-2).  It was discovered that the two 
downwelling pyrgeometers destined for C1 and E13 may have been swapped during installation.  
The instrument mentor is unsure of applied calibration coefficients during this DQR's 
time period.  Backing out new downwelling longwave irradiances would be difficult in this 
case. Fortunately, the problem period is less than a fortnight.

• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
  Deviation(down_long_hemisp_shaded_std)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
• Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded
  Pyrgeometer(inst_down_long_shaded_case_temp)
• Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
• Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
  Pyrgeometer(inst_down_long_shaded_dome_temp)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)

• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
  Deviation(down_long_hemisp_shaded_std)
• Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
• Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
  Pyrgeometer(inst_down_long_shaded_dome_temp)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
• Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded
  Pyrgeometer(inst_down_long_shaded_case_temp)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)

• null(Raw data stream - documentation not supported)

• Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)
• Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
  Pyrgeometer(inst_down_long_shaded_case_resist)
• Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
  Pyrgeometer(inst_down_long_shaded_dome_resist)

• Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
  Pyrgeometer(inst_down_long_shaded_case_resist)
• Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
  Pyrgeometer(inst_down_long_shaded_dome_resist)
• Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)

• null(Raw data stream - documentation not supported)

SGP/AOS/C1 - PCASP instrument problem

PCASP (optical particle counter) gave unusually low aerosol signal counts despite numerous 
attempts to fix the instrument by the mentor and manufacturer.

• OPC sheath(OPCSheath)
• OPC sample flow(OPCFlow)
• Analog signal from PMS PCASP(OPCLaserVolt)

• PMS PCASP Chan. 7 (0.23 micrometers < Dp < 0.26)(pa23_p26conc)
• PMS PCASP Chan. 26 (3.00 micrometers < Dp < 3.50)(pa300_p350conc)
• PMS PCASP Chan. 28 (4.00 micrometers < Dp < 5.00)(pa400_p500conc)
• PMS PCASP Chan. 15 (0.70 micrometers < Dp < 0.80)(pa70_p80conc)
• PMS PCASP Chan. 25 (2.60 micrometers < Dp < 3.00)(pa260_p300conc)
• PMS PCASP Chan. 0 (Dp > 10 micrometers)(Pa1000Conc)
• PMS PCASP Chan. 2 (0.12 micrometers < Dp < 0.14)(pa12_p14conc)
• PMS PCASP Chan. 30 (6.50 micrometers < Dp < 8.00)(pa650_p800conc)
• PMS PCASP Chan. 6 (0.20 micrometers < Dp < 0.23)(pa20_p23conc)
• PMS PCASP Chan. 19 (1.30 micrometers < Dp < 1.40)(pa130_p140conc)
• PMS PCASP Chan. 17 (0.90 micrometers < Dp < 1.00)(pa90_p100conc)
• PMS PCASP Chan. 18 (1.00 micrometers < Dp < 1.30)(pa100_p130conc)
• PMS PCASP Chan. 3 (0.14 micrometers < Dp < 0.16)(pa14_p16conc)
• PMS PCASP Chan. 31 (8.00 micrometers < Dp < 10.0)(pa800_p1000conc)
• PMS PCASP Chan. 1 1/cm^3 (0.10 micrometers < Dp < 0.12)(pa10_p12conc)
• PMS PCASP Chan. 23 1/cm^3 (2.00 micrometers < Dp < 2.30)(pa200_p230conc)
• PMS PCASP Chan. 24 (2.30 micrometers < Dp < 2.60)(pa230_p260conc)
• PMS PCASP Chan. 21 (1.60 micrometers < Dp < 1.80)(pa160_p180conc)
• PMS PCASP Chan. 22 (1.80 micrometers < Dp < 2.00)(pa180_p200conc)
• PMS PCASP Chan. 9 (0.30 micrometers < Dp < 0.35)(pa30_p35conc)
• PMS PCASP Chan. 27 (3.50 micrometers < Dp < 4.00)(pa350_p400conc)
• PMS PCASP Chan. 13 (0.50 micrometers < Dp < 0.60)(pa50_p60conc)
• PMS PCASP Chan. 4 (0.16 micrometers < Dp < 0.18)(pa16_p18conc)
• PMS PCASP Chan. 20 (1.40 micrometers < Dp < 1.60)(pa140_p160conc)
• PMS PCASP Chan. 8 (0.26 micrometers < Dp < 0.30)(pa26_p30conc)
• PMS PCASP Chan. 5 (0.18 micrometers < Dp < 0.20)(pa18_p20conc)
• PMS PCASP Chan. 14 (0.60 micrometers < Dp < 0.70)(pa60_p70conc)
• PMS PCASP Chan. 10 (0.35 micrometers < Dp < 0.40)(pa35_p40conc)
• PMS PCASP Chan. 11 (0.35 micrometers < Dp < 0.40)(pa40_p45conc)
• PMS PCASP Chan. 16 (0.80 micrometers < Dp < 0.90)(pa80_p90conc)
• PMS PCASP Chan. 12 (0.45 micrometers < Dp < 0.50)(pa45_p50conc)
• PMS PCASP Chan. 29 (5.00 micrometers < Dp < 6.50)(pa500_p650conc)

SGP/AOS/C1 - Ozone instrument removed for repair

The ozone monitor was removed and sent back to the manufacturer for repair.

• Ozone sample frequency(O3_Samp)
• Ozone offset value(O3_Offset)
• Ozone sample pressure(O3_Press)
• Ozone span value(O3_Span)
• Ozone line temp. from thermocouple attached to heater(O3_LinHeater)
• Ozone sample temperature(O3_Temp)
• Ozone line temperature set point(O3_SetPt)
• Ozone span concentration(O3_Spn)
• Ozone zero concentration(O3_Zro)
• Ozone line sample temperature (omega temp. sensor)(O3_LinTemp)
• unknown(O3_Cont)
• Ozone mode(O3_Mode)

• Ozone concentration(Ozone)

SGP/AOS/C1 - Condensation Particle Counter failure

The CPC signal declined to a low value. The instrument was shipped back to the mentor, 
cleaned and repaired. The instrument inlet was clogged.

• TSI CPC saturator temperature(CPCSaturT)
• TSI CPC condensor and saturator temperature difference(CPCDeltT)
• TSI CPC condensor temperature(CPCCondT)

• CPC Particle concentration(CPCPartConc)

SGP/AOS/C1 - Wet nephelometer problems

The humidifier tube was coated with mold and had to be replaced. This affects the wet 
nepheleometer measurements and the calculations of the aerosol hygroscopic growth.

The humidifer was cleaned and replaced. A filter was added to the water circulation to 
minimize mold.

• TSI High RH Neph. 550 nm back scattering coefficient for zero gas(GrnBScatZero_HRH)
• TSI High RH Neph. 550 nm total scattering coefficient for zero gas(GrnTScatZero_HRH)
• TSI High RH Neph. 700 nm total scattering coefficient for cal. gas(RedTScatSpn_HRH)
• TSI High RH Neph. lamp voltage(TSINephLV_HRH)
• TSI High RH Neph. 550 nm total scattering coefficient for cal. gas(GrnTScatSpn_HRH)
• TSI High RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_HRH)
• TSI High RH Neph. 700 nm total scattering coefficient for zero gas(RedTScatZero_HRH)
• TSI High RH Neph. 550 nm rayleigh scattering coefficient for zero gas(GrnRScatZero_HRH)
• TSI High RH Neph. lamp current(TSINephLC_HRH)
• TSI High RH Neph. 550 nm back scattering coefficient for cal. gas(GrnBScatSpn_HRH)
• TSI High RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_HRH)
• TSI High RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_HRH)
• TSI High RH Neph. 550nm reference intensity(TSISensGrn_HRH)
• TSI High RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_HRH)
• TSI High RH Neph. 700 nm back scattering coefficient for zero gas(RedBScatZero_HRH)
• TSI High RH Neph. 700 nm back scattering coefficient for cal. gas(RedBScatSpn_HRH)
• TSI High RH Neph. 700 nm rayleigh scattering coefficient for zero gas(RedRScatZero_HRH)
• TSI High RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_HRH)

• TSI High RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_HRH)
• Temp. downstream of humidograph(HGdownstream_T)
• TSI High RH Neph. Pressure(TSINephPres_HRH)
• TSI High RH Neph. Sample Temperature(TSINephTSamp_HRH)
• TSI High RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_HRH)
• RH upstream of humidograph(HGupstream_RH)
• TSI High RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_HRH)
• TSI High RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_HRH)
• Temp. upstream of humidograph(HGupstream_T)
• TSI High RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_HRH)
• TSI High RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_HRH)
• TSI High RH Neph. inlet temperature(TSINephTin_HRH)
• TSI High RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_HRH)
• TSI High RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_HRH)
• TSI High RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_HRH)
• TSI High RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_HRH)
• TSI High RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_HRH)
• TSI High RH Neph. relative humidity(TSINephRHSamp_HRH)
• RH downstream of humidograph(HGdownstream_RH)
• TSI High RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_HRH)

NSA/RWP/C1 - System problems

RWP PC experienced repeated lock-ups during system operations.  Various components were 
swapped out and the loggerboard configuration was modified.

• Beam 4 radial wind speed(vel4)
• Beam 3 radial wind speed(vel3)
• Horizontal wind direction(dir)
• V-component(v_wind)
• Beam 0 radial wind speed(vel0)
• U-component(u_wind)
• Beam 2 radial wind speed(vel2)
• Horizontal wind speed(spd)
• Beam 1 radial wind speed(vel1)

• Mean atmospheric vertical velocity(mdf)

• Number of Values that Passed Consensus, Vertical wind velocity(ncns_vert_v)
• Number of Values that Passed Consensus, Beam 0 Virtual Temperature(ncns_virtual_temp)
• Number of Values that Passed Consensus, Corrected Beam 0 Virtual Temperature(ncns_virtual_temp_corr)

• Spectral Data (signal strength/freq int)(spc_amp)

• Raw data stream - documentation not supported(raw)

• Mean atmospheric vertical velocity(mdf)
• Acoustic Spectral Width(sspecw)
• Signal to Noise Ratio of the RASS Signal(snr)
• Signal to Noise Ratio: acoustic(ssnr)
• 1000 * log10(noise signal level: vert vel)(noise)
• Spectral Width: vert velocity(specw)

• Spectral Data (signal strength/freq int)(spc_amp)

• null(Raw data stream - documentation not supported)

SGP/SIRS/C1 - Reprocess: UIR/DIR Incorrect calibration coefficients

It appears the datalogger program at SIRS/C1 was automatically updated, unbeknownst to 
anyone, on 9/27/20041423GMT with an older program with incorrect UIR and DIR calibration 
coefficients. The correct and incorrect cal coeffs for the UIR and DIR pyrgeometers during 
this DQR period were:
  incorrectUIR   correctUIR
K0  -12.84       -13.00
K1  .2250        0.2573
K2  1.024        1.024
K3  -1.9280      -1.8050

 incorrectDIR   correctDIR
K0  -13.15       -26.89
K1  0.2374       0.2967
K2  1.0260       1.0560
K3  -2.478       -3.3080

• Instantaneous Case Temperature(inst_up_long_case_temp)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
  Deviation(down_long_hemisp_shaded_std)
• Downwelling Longwave Hemispheric Net Infrared(down_long_netir)
• Instantaneous Dome Temperature(inst_up_long_dome_temp)
• Upwelling Longwave Hemispheric Net Infrared(up_long_netir)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Standard
  Deviation(up_long_hemisp_std)
• Instantaneous Downwelling Pyrgeometer Dome Thermistor Temperature, Shaded
  Pyrgeometer(inst_down_long_shaded_dome_temp)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Minima(up_long_hemisp_min)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer, Maxima(up_long_hemisp_max)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
• Instantaneous Downwelling Pyrgeometer Case Thermistor Temperature, Shaded
  Pyrgeometer(inst_down_long_shaded_case_temp)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)

• null(Raw data stream - documentation not supported)

NSA/RWP/C1 - Instrument problem, Data transfer problem

Problems with the coherent integration hardware resulted in repeated ingest failures when 
too many errors occurred.  These cases involved occasions when there were no samples from 
a single axis (or more) during an averaging interval. If there were sufficient samples, 
the mean wind speed and direction were reported if normal data criteria were met.  
However, there were undoubtedly cases when only a few samples were obtained during an averaging 
interval.  Thus the variability of the data is likely increased.  The data are correct 
when reported.

• copolar signal to noise ratio(snr1)
• Beam 4 radial wind speed(vel4)
• Beam 3 radial wind speed(vel3)
• Ave snr*10 level, Beam 2(snr2)
• Horizontal wind direction(dir)
• V-component(v_wind)
• Beam 0 radial wind speed(vel0)
• Beam 2 radial wind speed(vel2)
• U-component(u_wind)
• Signal to Noise Ratio, Beam 3(snr3)
• Signal to Noise Ratio, Beam 4(snr4)
• Horizontal wind speed(spd)
• Signal to Noise Ratio, Beam 0(snr0)
• Beam 1 radial wind speed(vel1)

NSA/C1 - Site-wide power failure

The Barrow facility experienced a site-wide power failure on 12/13.  Power was restored to 
most instruments between 2250 and 2330 GMT.

• Elevation angle of Beam 4 for WINDS data(elevation4)
• Power offset(power)
• Average Interval(avgint)
• lon(lon)
• Number of Values Required for Consensus, Beam 4(nrcns4)
• Number of values that passed consensus, beam 2(ncns2)
• Azimuth of Beam 2(azimuth2)
• Elevation angle of Beam 0 for WINDS data(elevation0)
• Beam 1 radial wind speed(vel1)
• Sample Rate(sampr)
• Rx Bandwidth Switch Code(bswitch)
• Height Index(range_gate)
• Signal to Noise Ratio, Beam 4(snr4)
• Azimuth of Beam 4 for WINDS data(azimuth4)
• Number of Values Required for Consensus, Beam 0(nrcns0)
• Number of spectra/ave int, Beam 2(nrec2)
• Signal to Noise Ratio, Beam 0(snr0)
• Azimuth of Beam 0(azimuth0)
• Array of heights for each sample time(height_p)
• Number of Values Required for Consensus, Beam 1(nrcns1)
• Time offset of tweaks from base_time(time_offset)
• Dummy altitude for Zeb(alt)
• Azimuth of Beam 1(azimuth1)
• Number of valid heights(nheight)
• Oblique FFT Bandwidth(oband)
• Elevation angle of Beam 1 for WINDS data(elevation1)
• Number of Individual Spectra/Average Spectrum(nspc)
• Beam 0 radial wind speed(vel0)
• Oblique Velocity Spectral Resolution(ovsr)
• Number of values that passed consensus, beam 1(ncns1)
• Beam 4 radial wind speed(vel4)
• copolar signal to noise ratio(snr1)
• Number of Coherent Samples/spectral point(ncoh)
• Number of spectra/ave int, Beam 1(nrec1)
• Horizontal wind speed(spd)
• Elevation angle of Beam 2 for WINDS data(elevation2)
• U-component(u_wind)
• Vertical Velocity Spectral Resolution(vvsr)
• lat(lat)
• Number of values that passed consensus, beam 0(ncns0)
• V-component(v_wind)
• Height of Center of First Range Gate(rgf)
• Number of Values Required for Consensus, Beam 2(nrcns2)
• Interpulse Period(ipp)
• Number of spectra/ave int, Beam 0(nrec0)
• Number of spectra/ave int, Beam 4(nrec4)
• Beam 3 radial wind speed(vel3)
• Number of Pulse Code Bits(pcbits)
• Number of values that passed consensus, beam 4(ncns4)
• Ave snr*10 level, Beam 2(snr2)
• Elevation angle of Beam 3 for WINDS data(elevation3)
• Range Gate Spacing(rgs)
• Individual Spectrum Integration Time(sitime)
• base time(base_time)
• Height of Center of Last Range Gate(rgl)
• Number of Values Required for Consensus, Beam 3(nrcns3)
• Delay Time to 1st Gate(dly)
• Time Domain Integration Time(tditime)
• Vertical FFT Bandwidth(vband)
• Pulse Repetition Frequency(prf)
• Horizontal wind direction(dir)
• Azimuth of Beam 3 for WINDS data(azimuth3)
• Ave Time per Average Spectra.(spcavetim)
• Number of values that passed consensus, beam 3(ncns3)
• Beam 2 radial wind speed(vel2)
• Pulse Length(plen)
• Signal to Noise Ratio, Beam 3(snr3)
• Number of spectra/ave int, Beam 3(nrec3)

• JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)

• lat(lat)
• Dummy altitude for Zeb(alt)
• Number of Values Required for Consensus, Beam 0(nrcns)
• Number of Values that Passed Consensus, Beam 0 Virtual Temperature(ncns_virtual_temp)
• virtual_temp_corr(virtual_temp_corr)
• base time(base_time)
• lon(lon)
• Array of heights for the range gates(height)
• Signal to Noise Ratio, Corrected Beam 0 Virtual Temperature(snr_virtual_temp_corr)
• Beam 0 virtual temperature(virtual_temp)
• Number of Values that Passed Consensus, Corrected Beam 0 Virtual Temperature(ncns_virtual_temp_corr)
• Number of pulses/ave int, Beam 0(nrec)
• Sample Rate(sampr)
• Vertical wind velocity(vert_v)
• Signal to Noise Ratio, Vertical wind velocity(snr_vert_v)
• Time offset of tweaks from base_time(time_offset)
• Signal to Noise Ratio, Beam 0 Virtual Temperature(snr_virtual_temp)
• Average Interval(avgint)
• Range Gate Spacing(rgs)
• Number of Values that Passed Consensus, Vertical wind velocity(ncns_vert_v)

• Individual Spectrum Integration Time(sitime)
• Time Domain Integration Time(tditime)
• Oblique FFT Bandwidth(oband)
• Vertical FFT Bandwidth(vband)
• Signal to Noise Ratio of the RASS Signal(snr)
• Number of valid heights(nheight)
• Radial Velocity Spectral Resolution(vsr)
• Mean atmospheric vertical velocity(mdf)
• Height of Center of Last Range Gate(rgl)
• lat(lat)
• Number of Pulse Code Bits(pcbits)
• Beam Number(beam)
• Time offset of tweaks from base_time(time_offset)
• lon(lon)
• Number of Coherent Samples/spectral point(ncoh)
• base time(base_time)
• Number of Individual Spectra/Average Spectrum(nspc)
• elevation(elevation)
• Rx Bandwidth Switch Code(bswitch)
• Sample Rate(sampr)
• Delay Time to 1st Gate(dly)
• Range Gate Spacing(rgs)
• Array of heights for each sample time(height_t)
• 1000 * log10(noise signal level: vert vel)(noise)
• Pulse Repetition Frequency(prf)
• Spectral Width: vert velocity(specw)
• Height Index(range_gate)
• Pulse Length(plen)
• Dummy altitude for Zeb(alt)
• Ave Time per Average Spectra. Also known as dwell.(spcavetime)
• Height of Center of First Range Gate(rgf)
• Interpulse Period(ipp)

• Repetition rate, or Trigger Frequency of the laser(trigger_freq)
• base time(base_time)
• Amount of time the actual laser pulse lags behind the sync trigger(laser_sync_offset)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• Preliminary cloud base height(preliminary_cbh)
• Laser Temperature(laser_temp)
• time(time)
• lon(lon)
• Angle of orientation with respect to true geographic north(transceiver_azimuth_angle)
• Number of laser shots recorded(shots_summed)
• Background Signal(background_signal)
• value represents date of last configuration change as yyyymmdd(property)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• Detector Temperature(detector_temp)
• Dummy altitude for Zeb(alt)
• Amount of time the scalar lags behind the sync trigger(scalar_sync_offset)
• Voltage level which operates the thermistor(voltage_10)
• Number of laser pulses summed during measurement interval(shots_sum)
• Time in nanoseconds for each range bin of multichannel scalar card.(range_bin_time)
• Filter Temperature(filter_temp)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• Voltage level which operates the A/D card and the detector(voltage_05)
• range(range)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• Laser output energy per pulse(energy_monitor)
• Array of heights for the range gates(height)
• Voltage level which operates the energy monitor(voltage_15)
• Instrument Temperature(instrument_temp)
• Angle of inclination with respect to horizontal(transceiver_altitude_angle)
• required to correct raw counts for detector deadtime prior to all other
  corrections.(deadtime_correction)
• Sum of raw backscatter counts per bin prior to ANY corrections.(total_counts)
• Time offset of tweaks from base_time(time_offset)
• Amount of time laser pulse lags behind the scalar trigger(laser_scalar_sync_offset)
• lat(lat)
• Aerosol backscatter coefficient at 355 nm(backscatter)

• Filter Temperature(filter_temp)
• time(time)
• Laser output energy per pulse(energy_monitor)
• Laser Temperature(laser_temp)
• range(range)
• Background Signal(background_signal)
• Array of heights for the range gates(height)
• Preliminary cloud base height(preliminary_cbh)
• Maximum altitude retrieved from multichannel scalar card.(max_altitude)
• base time(base_time)
• Instrument Temperature(instrument_temp)
• Voltage level which operates the A/D card and the detector(voltage_05)
• effective range offset due to poor sync between laser firing and A/D trigger.(range_offset)
• Time offset of tweaks from base_time(time_offset)
• lon(lon)
• Voltage level which operates the energy monitor(voltage_15)
• Attenuated backscatter(detector_counts)
• Voltage level which operates the thermistor(voltage_10)
• lat(lat)
• Detector Temperature(detector_temp)
• Number of laser shots recorded(shots_summed)
• Time in nanoseconds for each range bin of multichannel scalar card.(range_bin_time)
• Repetition Rate, or Trigger Frequency of the laser(pulse_rep)
• Width of range-bins calculated from range_bin_time(range_bin_width)
• Dummy altitude for Zeb(alt)
• Distance from leading edge of first range bin to the center of each bin .(range_bins)

• Expected root-mean-square error in precipitable water retrieval using only
  23.835 and 30.0 GHz(totalPrecipitableWater2RmsError)
• Flag indicating moisture sensor status(wetWindowFlag)
• Retrieved cloud liquid water content(liquidWaterContent)
• Dummy altitude for Zeb(alt)
• Cloud base height(cloudBaseHeight)
• Expected root-mean-square error in liquid water path retrieval using only 23.835
  and 30.0 GHz(liquidWaterPath2RmsError)
• Expected root-mean-square error in temperature retrieval(temperatureRmsError)
• Retrieved liquid water path using only 23.835 and 30.0 GHz(liquidWaterPath2)
• Ambient surface absolute temperature(surfaceTemperature)
• Surface water vapor density at instrument(surfaceWaterVaporDensity)
• Lifting condensation level(liftingCondensationLevel)
• Interpolated dewpoint temperature(dewpointTemperature)
• Retrieved liquid water path(liquidWaterPath)
• Equilibrium level pressure(equilibriumLevelPres)
• Lifting condensation level pressure(liftingCondensationLevelPres)
• lon(lon)
• Retrieved total precipitable water vapor using only 23.835 and 30.0 GHz(totalPrecipitableWater2)
• air temperature (NGM250 predicted)(temperature)
• Expected root-mean-square error in water vapor density retrieval(waterVaporDensityRmsError)
• Retrieved water vapor density(waterVaporDensity)
• time(time)
• Expected root-mean-square error in liquid water path retrieval(liquidWaterPathRmsError)
• Level of free convection pressure(levelFreeConvectionPres)
• Microwave brightness temperature(brightnessTemperature)
• Data quality flags(dataQualityFlags)
• Internal blackbody reference temperature(blackbodyTemperature)
• atmospheric pressure at mean sea level and at tropopause (NGM250 predicted)(pressure)
• Derived virtual temperature(virtualTemperature)
• Zenith-pointing infrared temperature at 10um(infraredTemperature)
• Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater)
• Frequency(frequency)
• base time(base_time)
• Expected root-mean-square error in precipitable water retrieval(totalPrecipitableWaterRmsError)
• lat(lat)
• Convective Available Potential Energy(cape)
• Expected root-mean-square error in liquid water content retrieval(liquidWaterContentRmsError)
• Level of free convection(levelFreeConvection)
• Ambient surface pressure(surfacePressure)
• Array of heights for the range gates(height)
• Ambient surface relative humidity(surfaceRelativeHumidity)
• elevation(elevation)
• Time offset of tweaks from base_time(time_offset)
• Derived relative humidity(relativeHumidity)
• azimuth(azimuth)
• Equilibrium level(equilibriumLevel)
• Interpolated water vapor mixing ratio(waterVaporMixingRatio)

• Time offset of tweaks from base_time(time_offset)
• Spectral Data (signal strength/freq int)(spc_amp)
• Dummy altitude for Zeb(alt)
• lon(lon)
• base time(base_time)
• Sample Rate(sampr)
• Range Gate Spacing(rgs)
• Array of heights for the range gates(height)
• lat(lat)
• Particle radius at logarithmic center of bin(bins)

• Mean acoustic speed(smdf)
• Dummy altitude for Zeb(alt)
• lon(lon)
• base time(base_time)
• Beam 0 virtual temperature(virtual_temp)
• Signal to Noise Ratio: acoustic(ssnr)
• Spectral Width: vert velocity(specw)
• Mean atmospheric vertical velocity(mdf)
• Sample Rate(sampr)
• Range Gate Spacing(rgs)
• Signal to Noise Ratio of the RASS Signal(snr)
• Array of heights for the range gates(height)
• 1000 * log10(noise signal level: vert vel)(noise)
• lat(lat)
• Acoustic Spectral Width(sspecw)
• Time offset of tweaks from base_time(time_offset)

• 40m Average QLI Reference Temperature(RefT40M_AVG)
• Standard Deviation of 10m Calculated Vapor Pressure(VP10M_STD)
• 15 minute Present Weather Code(PwCod15mi)
• Chilled Mirror Calculated Vapor Pressure(VPCMH)
• Chilled Mirror Temperature(CMHTemp)
• Standard Deviation of 40m Calculated Dew Point(DP40M_STD)
• 2m Arithmetic Mean Wind Speed(WS2M_S_WVT)
• 10m Vector Averaged Wind Speed(WS10M_U_WVT)
• lon(lon)
• lat(lat)
• 10m Arithmetic Mean Wind Speed(WS10M_S_WVT)
• 2m Average QLI Input Voltage(Volt2M_AVG)
• 2m Vector Averaged Wind Direction(WD2M_DU_WVT)
• 10m Average Relative Humidity(RH10M_AVG)
• Present Weather Sensor Alarm(PWSAlarm)
• Dummy altitude for Zeb(alt)
• 20m Average Relative Humidity(RH20M_AVG)
• 10m Average Calculated Vapor Pressure(VP10M_AVG)
• 1 minute Average Visibility(AvgVis1mi)
• Standard Deviation of Sonic Vector Averaged Wind Direction(SonicWD_SDU_WVT)
• 10m Average Temperature(T10M_AVG)
• Instant Present Weather Code(InstPwCod)
• Standard Deviation of 2m Relative Humidity(RH2M_STD)
• Standard Deviation of 10m Relative Humidity(RH10M_STD)
• Standard Deviation of 10m Temperature(T10M_STD)
• 40m Average Calculated Dew Point(DP40M_AVG)
• Standard Deviation of 2m Calculated Vapor Pressure(VP2M_STD)
• 1 hour Present Weather Code(PwCod1hr)
• Standard Deviation of 20m Relative Humidity(RH20M_STD)
• 40m Vector Averaged Wind Speed(WS40M_U_WVT)
• 10m Average Calculated Dew Point(DP10M_AVG)
• 20m Arithmetic Mean Wind Speed(WS20M_S_WVT)
• Standard Deviation of 20m Vector Averaged Wind Direction(WD20M_SDU_WVT)
• 2m Average Temperature(T2M_AVG)
• 2m Average Calculated Dew Point(DP2M_AVG)
• Cumulative Snow Sum(CumSnow)
• 20m Vector Averaged Wind Direction(WD20M_DU_WVT)
• 20m Average Calculated Dew Point(DP20M_AVG)
• Average X Component of Sonic Wind Speed(SonicX_AVG)
• 20m Average QLI Reference Temperature(RefT20M_AVG)
• Sonic Vector Averaged Wind Direction(SonicWD_DU_WVT)
• Standard Deviation of 2m Temperature(T2M_STD)
• base time(base_time)
• Standard Deviation of 10m Vector Averaged Wind Direction(WD10M_SDU_WVT)
• 10 minute Average Visibility(AvgVis10m)
• 2m Average Relative Humidity(RH2M_AVG)
• Standard Deviation of 10m Calculated Dew Point(DP10M_STD)
• Standard Deviation of 2m Vector Averaged Wind Direction(WD2M_SDU_WVT)
• 10m Average QLI Input Voltage(Volt10M_AVG)
• 20m Average Temperature(T20M_AVG)
• 40m Vector Averaged Wind Direction(WD40M_DU_WVT)
• Standard Deviation of 2m Calculated Dew Point(DP2M_STD)
• Cumulative Water Sum(CumH2O)
• 10m Average QLI Reference Temperature(RefT10m_AVG)
• 40m Average Relative Humidity(RH40M_AVG)
• 40m Arithmetic Mean Wind Speed(WS40M_S_WVT)
• 40m Average Temperature(T40M_AVG)
• Precipitation Rate(PcpRate)
• 10m Vector Averaged Wind Direction(WD10M_DU_WVT)
• Sonic Arithmetic Mean Wind Speed(SonicWS_S_WVT)
• 2m Average Calculated Vapor Pressure(VP2M_AVG)
• Average Y Component of Sonic Wind Speed(SonicY_AVG)
• Sonic Vector Averaged Wind Speed(SonicWS_U_WVT)
• Standard Deviation of 40m Temperature(T40M_STD)
• 20m Average Calculated Vapor Pressure(VP20M_AVG)
• 2m Vector Averaged Wind Speed(WS2M_U_WVT)
• Time offset of tweaks from base_time(time_offset)
• time(time)
• 2m Average QLI Reference Temperature(RefT2M_AVG)
• Average Sonic Static Speed of Sound(SonicS_AVG)
• Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)
• Standard Deviation of 20m Calculated Vapor Pressure(VP20M_STD)
• Standard Deviation of 40m Relative Humidity(RH40M_STD)
• 20m Average QLI Input Voltage(Volt20M_AVG)
• Standard Deviation of 40m Vector Averaged Wind Direction(WD40M_SDU_WVT)
• Datalogger Battery Voltage(Batt_Volt)
• Standard Deviation of 20m Calculated Dew Point(DP20M_STD)
• 40m Average QLI Reference Voltage(Volt40M_AVG)
• Chilled Mirror Dew Point(CMHDP)
• 20m Vector Averaged Wind Speed(WS20M_U_WVT)
• 40m Average Calculated Vapor Pressure(VP40M_AVG)
• Standard Deviation of 20m Temperature(T20M_STD)
• Standard Deviation of 40m Calculated Vapor Pressure(VP40M_STD)
• Chilled Mirror Calculated Relative Humidity(CMHRH)
• Atmospheric Pressure(AtmPress)

• Imaginary radiance during sky view averaged over (700_705 cm-1)(skyViewImaginaryRadiance700_705)
• Weight factor for top used in calculating ambient blackbody temperature average(ABBtopTempWeight)
• Hot blackbody temperature - apex(HBBapexTemp)
• Interferometer window temperature measured on the outside of the aluminum window
  flange(interferometerWindowTemp)
• Resistive temperature of 97 Kohm fixed resistor located in SCE-P4 shell(fixed97KohmResistor)
• Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
• Number of complete (forward+backward) interferogram scans in sample average(coadditionsCount)
• Imaginary radiance during sky view averaged over (2282_2287 cm-1)(skyViewImaginaryRadiance2282_2287)
• Characteristic value representing overall longwave channel responsivity(LWresponsivity)
• Motor step value given to motor controller to achieve proper mirror positioning(sceneMirrorMotorStep)
• Radiance standard deviation during sky view averaged over (985_990 cm-1)(skyViewStdDevRadiance985_990)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Hot blackbody temperature - rim top(HBBtopTemp)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• Version number of Operational Software(systemReleaseNumber)
• Weight factor for bottom used in calculating ambient blackbody temperature
  average(ABBbottomTempWeight)
• Imaginary radiance during sky view averaged over (2295_2300 cm-1)(skyViewImaginaryRadiance2295_2300)
• Radiance standard deviation during ambient blackbody view averaged over (700_705
  cm-1)(ABBviewStdDevRadiance700_705)
• Logical flag indicating that a data record is missing (true/false(missingDataFlag)
• Corrective offset for final hot blackbody average temperature(HBBtempOffset)
• Weight factor for top used in calculating hot blackbody temperature average(HBBtopTempWeight)
• Radiance standard deviation during ambient blackbody view averaged over (985_990
  cm-1)(ABBviewStdDevRadiance985_990)
• Logical flag indicating whether HBB temperature is stable (true) or not stable
  (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
• Duration of scene view(sceneViewDuration)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Ambient air temperature near the interferometer(airNearInterferometerTemp)
• Scene mirror temperature as measured at the center of the back of the mirror(sceneMirrorTemp)
• Resistive temperature of 2500 Ohm fixed resistor - banana plug mounted(fixed2500ohmResistor)
• Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)
• The noise equivalent radiance observed in the longwave channel during a sky view
  at 1000 cm-1(LWskyNEN)
• Rain sensor analog output: the rain sensor is located inside the hatch near the
  sky aperture and is used to flag the critical condition of rain falling on
  the AERI s(rainSensorIntensity)
• Imaginary radiance during sky view averaged over (2510_2515 cm-1)(skyViewImaginaryRadiance2510_2515)
• Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
• Shortwave radiance average (2282_2287 cm-1) Elevated Air(elevatedLayerRadiance2282_2287)
• Number of views in a sequence(sceneMirPosCount)
• Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
• BB Support Structure Temperature(BBsupportStructureTemp)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Longwave elevated air brightness temperature from radiance average (700_705
  cm-1)(elevatedLayerAirTemp700_705)
• Observation longitude(Longitude)
• Radiance standard deviation during hot blackbody view averaged over (700_705
  cm-1)(HBBviewStdDevRadiance700_705)
• Laser wavenumber used in definition of output wavenumber scale(outputLaserWavenumber)
• Imaginary radiance during sky view averaged over (675_680 cm-1)(skyViewImaginaryRadiance675_680)
• Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)
• Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
• Sun sensor analog output: The sun sensor has a view angle to the sky slightly
  larger than the interferometer FOV and is aligned to the interferometer
  line-of-sight. I(sunSensorIntensity)
• Detector temperature sensed via diode near detector(detectorTemp)
• Radiance standard deviation during ambient blackbody view averaged over
  (2295_2300 cm-1)(ABBviewStdDevRadiance2295_2300)
• Radiance standard deviation during sky view averaged over (2510_2515 cm-1)(skyViewStdDevRadiance2510_2515)
• Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
• Interferometer front end fan airflow unheated temperature: used with heated
  temperature as measure of airflow.(frontEndFanAirUnheatedTemp)
• Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
• Limit applied to LWskyNEN in determination of LWskyNENacceptable(LWskyNENlimit)
• Scene mirror motor driver heat sink temperature(motorDriverTemp)
• Radiance standard deviation during hot blackbody view averaged over (675_680
  cm-1)(HBBviewStdDevRadiance675_680)
• Shortwave surface air brightness temperature from radiance average (2295_2300
  cm-1)(surfaceLayerAirTemp2295_2300)
• Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
• Factor used to convert single-scan noise to two-minute equivalent(twoMinuteNoiseEstimateFactor)
• Observation date(dateYYMMDD)
• Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
• Blackbody controller Unit 2 power supply temperature(BBcontroller2temp)
• Stirling cooler compressor temperature measured at compressor heatsink(coolerCompressorTemp)
• Size of buffer holding initial spectrum(originalInterferogramSize)
• Time (HHMMSS)(timeHHMMSS)
• Longwave radiance average (700_705 cm-1) Elevated Air(elevatedLayerRadiance700_705)
• Radiance standard deviation during ambient blackbody view averaged over
  (2510_2515 cm-1)(ABBviewStdDevRadiance2510_2515)
• Size of buffer holding expanded spectrum before interpolation(expandedInterferogramSize)
• Radiance standard deviation during ambient blackbody view averaged over
  (2282_2287 cm-1)(ABBviewStdDevRadiance2282_2287)
• Weight factor for apex used in calculating hot blackbody temperature average(HBBapexTempWeight)
• Original laser wavenumber assumed for this instrument(originalLaserWavenumber)
• Signal conditioning electronics inside air temperature(SCEtemp)
• The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
  centered on the sky view(HBBtempDrift)
• Limit applied to HBBtempDrift in determination of HBBstable flag(HBBtempDriftLimit)
• Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
• Scene mirror motor case temperature(mirrorMotorTemp)
• The noise equivalent radiance observed in the shortwave channel during a sky
  view at 2500 cm-1(SWskyNEN)
• Logical flag indicating whether longwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using LWskyNEN and
  LWskyNENlimit.(LWskyNENacceptable)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• Shortwave elevated air brightness temperature from radiance average (2282_2287
  cm-1)(elevatedLayerAirTemp2282_2287)
• Character string containing instrument name(instrumentUnitNumber)
• Time at center of AERI sky observation period(Time_UTC_hours)
• Spare temperature sensor (location TBD)(spareTemp)
• Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
• Radiance standard deviation during hot blackbody view averaged over (2510_2515
  cm-1)(HBBviewStdDevRadiance2510_2515)
• Field of view half angle used in finite FOV correction(FFOVhalfAngle)
• Julian Day including day and fraction of day(JulianDay)
• Radiance standard deviation during hot blackbody view averaged over (2282_2287
  cm-1)(HBBviewStdDevRadiance2282_2287)
• Stirling cycle cooler expander temperature(coolerExpanderTemp)
• Ambient air temperature near blackbodies(airNearBBsTemp)
• Logical flag indicating whether shortwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using SWskyNEN and
  SWskyNENlimit.(SWskyNENacceptable)
• Blackbody controller Unit 1 power supply temperature(BBcontroller1temp)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• lat(lat)
• Interferometer front end fan airflow heated temperature: used with unheated
  temperature as measure of airflow.(frontEndFanAirHeatedTemp)
• Stirling cooler power supply temperature measured at power supply frame(coolerPowerSupplyTemp)
• Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
  indicative of front end air flow.(frontEndFanAirTempDiff)
• Weight factor for apex used in calculating ambient blackbody temperature average(ABBapexTempWeight)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Hot blackbody temperature - rim bottom(HBBbottomTemp)
• Relative Humidity measured in the Interferometer Enclosure(interferometerEnclosureRelativeHumidity)
• Observation Altitude(Altitude)
• Blackbody cavity geometry factor(BBcavityFactor)
• Resistive temperature of 12 Kohm fixed resistor located in SCE-P3 shell(fixed12KohmResistor)
• AERI instrument data channel number(channelNumber)
• AERI instrument unit serial number(AERIunitNumber)
• time(time)
• Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
• Electronics rack ambient temperature measured at inside top of rack(rackAmbientTemp)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Difference between actual and ideal motor encoder values for current view
  indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
• lon(lon)
• Radiance standard deviation during ambient blackbody view averaged over (675_680
  cm-1)(ABBviewStdDevRadiance675_680)
• AERI interferometer temperature at second port(interferometerSecondPortTemp)
• Limit applied to SWskyNEN in determination of SWskyNENacceptable(SWskyNENlimit)
• Imaginary radiance during sky view averaged over (985_990 cm-1)(skyViewImaginaryRadiance985_990)
• xxx(dataAvailable)
• base time(base_time)
• Dummy altitude for Zeb(alt)
• Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
• Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
• Number of terms used in finite field of view correction(numberOfTerms)
• Ambient blackbody temperature(ABBbottomTemp)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Weight factor for bottom used in calculating hot blackbody temperature average(HBBbottomTempWeight)
• Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
• Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
• Corrective offset for final ambient blackbody average temperature(ABBtempOffset)
• Scene mirror position encoder value(sceneMirPosEncoder)
• Time offset of tweaks from base_time(time_offset)
• Ambient blackbody temperature - apex(ABBapexTemp)
• Radiance standard deviation during hot blackbody view averaged over (2295_2300
  cm-1)(HBBviewStdDevRadiance2295_2300)
• Observation latitude(Latitude)
• Ambient blackbody temperature - rim top(ABBtopTemp)
• Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
• Stirling cycle cooler current(coolerCurrent)
• Radiance standard deviation during hot blackbody view averaged over (985_990
  cm-1)(HBBviewStdDevRadiance985_990)
• Instrument scene mirror position identifier(sceneMirrorPosition)
• AERI ingest computer temperature measured at back panel of computer(computerTemp)
• Relative humidity measured in the optics compartment atop the interferometer.(opticsCompartmentRelativeHumidity)

• lat(lat)
• Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Julian Day including day and fraction of day(JulianDay)
• wavenumbers for standard deviation of radiance spectra(wnum2)
• lon(lon)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• AERI instrument unit serial number(AERIunitNumber)
• Observation latitude(Latitude)
• Character string containing instrument name(instrumentUnitNumber)
• Time at center of AERI sky observation period(Time_UTC_hours)
• Version number of Operational Software(systemReleaseNumber)
• Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Time offset of tweaks from base_time(time_offset)
• base time(base_time)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• AERI instrument data channel number(channelNumber)
• Observation Altitude(Altitude)
• Logical flag indicating that a data record is missing (true/false(missingDataFlag)
• Wave number(wnum)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Time (HHMMSS)(timeHHMMSS)
• Dummy altitude for Zeb(alt)
• BB Support Structure Temperature(BBsupportStructureTemp)
• time(time)
• Mean of radiance spectra ensemble(mean_rad)
• Duration of scene view(sceneViewDuration)
• Observation longitude(Longitude)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Observation date(dateYYMMDD)

• AERI LW Responsivity Spectral Averages (Ch1)(ResponsivitySpectralAveragesCh1)
• Time (HHMMSS)(timeHHMMSS)
• Longwave window brightness temperature from radiance average (985_990 cm-1)(longwaveWindowAirTemp985_990)
• Shortwave surface air brightness temperature from radiance average (2295_2300
  cm-1)(surfaceLayerAirTemp2295_2300)
• AERI SW Scene NESR Spectral Averages (Ch2)(SkyNENCh2)
• Wave number in reciprocal centimeters(wnumsum3)
• Longwave elevated air brightness temperature from radiance average (700_705
  cm-1)(elevatedLayerAirTemp700_705)
• Logical flag indicating whether longwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using LWskyNEN and
  LWskyNENlimit.(LWskyNENacceptable)
• Characteristic value representing overall longwave channel responsivity(LWresponsivity)
• Time offset of tweaks from base_time(time_offset)
• AERI LW Scene Brightness Temp Spectral Averages (Ch1)(SkyBrightnessTempSpectralAveragesCh1)
• Longwave radiance average (700_705 cm-1) Elevated Air(elevatedLayerRadiance700_705)
• lat(lat)
• Wave number in reciprocal centimeters(wnumsum7)
• Difference between actual and ideal motor encoder values for current view
  indicative of quality of the mirror positioning.(sceneMirPosEncoderDrift)
• Maximum Temperature Difference Between HBB Thermistors(HBBmaxTempDiff)
• Wave number in reciprocal centimeters(wnumsum6)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• The noise equivalent radiance observed in the longwave channel during a sky view
  at 1000 cm-1(LWskyNEN)
• Wave number in reciprocal centimeters(wnumsum13)
• Radiance standard deviation during sky view averaged over (675_680 cm-1)(skyViewStdDevRadiance675_680)
• Observation longitude(Longitude)
• xxx(dataAvailable)
• AERI LW Scene NESR Spectral Averages (Ch1)(SkyNENCh1)
• Radiance standard deviation during sky view averaged over (2282_2287 cm-1)(skyViewStdDevRadiance2282_2287)
• Wave number in reciprocal centimeters(wnumsum2)
• Observation latitude(Latitude)
• Longwave window radiance average (985_990 cm-1)(longwaveWindowRadiance985_990)
• Shortwave radiance average (2295_2300 cm-1) Surface Air(surfaceLayerRadiance2295_2300)
• AERI SW Scene Radiance Spectral Averages (Ch2)(SkyRadianceSpectralAveragesCh2)
• Characteristic value representing overall shortwave channel responsivity(SWresponsivity)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Longwave radiance average (675-680 cm-1) Surface Air(surfaceLayerRadiance675_680)
• AERI SW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch2)(HBB2minNENestimateNo1Ch2)
• Noise-equivalent Radiance in Hot Blackbody at 2500 cm-1(SW_HBB_NEN)
• Rain sensor analog output: the rain sensor is located inside the hatch near the
  sky aperture and is used to flag the critical condition of rain falling on
  the AERI s(rainSensorIntensity)
• Wave number in reciprocal centimeters(wnumsum12)
• time(time)
• Wave number in reciprocal centimeters(wnumsum1)
• Shortwave window radiance average (2510_2515 cm-1)(shortwaveWindowRadiance2510_2515)
• Radiance standard deviation during sky view averaged over (985_990 cm-1)(skyViewStdDevRadiance985_990)
• AERI instrument data channel number(channelNumber)
• Wave number in reciprocal centimeters(wnumsum9)
• Ambient air temperature at hatch opening(outsideAirTemp)
• The maximum excursion of hot-blackbody temperature over 5 consecutive scenes,
  centered on the sky view(HBBtempDrift)
• Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Shortwave elevated air brightness temperature from radiance average (2282_2287
  cm-1)(elevatedLayerAirTemp2282_2287)
• Julian Day including day and fraction of day(JulianDay)
• Radiance standard deviation during sky view averaged over (700_705 cm-1)(skyViewStdDevRadiance700_705)
• AERI LW Scene Variability Spectral Averages (Ch1)(SkyUniformityCh1)
• Logical flag indicating that a data record is missing (true/false(missingDataFlag)
• Difference between frontEndFanAirHeatedTemp and frontEndFanAirUnheatedTemp
  indicative of front end air flow.(frontEndFanAirTempDiff)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• base time(base_time)
• Longwave surface air brightness temperature from radiance average (675_680 cm-1)(surfaceLayerAirTemp675_680)
• Wave number in reciprocal centimeters(wnumsum5)
• AERI SW Scene Variability Spectral Averages (Ch2)(SkyUniformityCh2)
• AERI LW HBB 2min NESR Estimate #1 derived from variance during HBB view (Ch1)(HBB2minNENestimateNo1Ch1)
• AERI SW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch2)(HBB2minNENestimateNo2Ch2)
• Logical flag indicating whether HBB temperature is stable (true) or not stable
  (false). Determined using HBBtempDrift and HBBtempDriftLimit.(HBBstable)
• AERI instrument unit serial number(AERIunitNumber)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• Radiance standard deviation during sky view averaged over (2510_2515 cm-1)(skyViewStdDevRadiance2510_2515)
• Noise-equivalent Radiance in Hot Blackbody at 1000 cm-1(LW_HBB_NEN)
• Observation date(dateYYMMDD)
• Sun sensor analog output: The sun sensor has a view angle to the sky slightly
  larger than the interferometer FOV and is aligned to the interferometer
  line-of-sight. I(sunSensorIntensity)
• Version number of Operational Software(systemReleaseNumber)
• Logical flag indicating whether shortwave channel noise equivalent radiance is
  acceptable in sky view (true/false). Determined using SWskyNEN and
  SWskyNENlimit.(SWskyNENacceptable)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• AERI LW Scene Radiance Spectral Averages (Ch1)(SkyRadianceSpectralAveragesCh1)
• Wave number in reciprocal centimeters(wnumsum11)
• The noise equivalent radiance observed in the shortwave channel during a sky
  view at 2500 cm-1(SWskyNEN)
• lon(lon)
• Observation Altitude(Altitude)
• AERI SW Responsivity Spectral Averages (Ch2)(ResponsivitySpectralAveragesCh2)
• Maximum Temperature Difference Between ABB Thermistors(ABBmaxTempDiff)
• Maximum Standard Deviation in Thermistor Channels 0..7(maxSampleStdDev)
• Wave number in reciprocal centimeters(wnumsum4)
• Duration of scene view(sceneViewDuration)
• Wave number in reciprocal centimeters(wnumsum8)
• AERI LW HBB 2min NESR Estimate #2 derived from sequential HBB views (Ch1)(HBB2minNENestimateNo2Ch1)
• Dummy altitude for Zeb(alt)
• Shortwave radiance average (2282_2287 cm-1) Elevated Air(elevatedLayerRadiance2282_2287)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• AERI SW Scene Brightness Temp Spectral Averages (Ch2)(SkyBrightnessTempSpectralAveragesCh2)
• Wave number in reciprocal centimeters(wnumsum14)
• Shortwave window brightness temperature from radiance average (2510_2515 cm-1)(shortwaveWindowAirTemp2510_2515)
• Wave number in reciprocal centimeters(wnumsum10)
• Time at center of AERI sky observation period(Time_UTC_hours)
• Radiance standard deviation during sky view averaged over (2295_2300 cm-1)(skyViewStdDevRadiance2295_2300)
• Character string containing instrument name(instrumentUnitNumber)

• Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
• 23.8 GHz Blackbody signal(bb23)
• 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
• 31.4 GHz goodness-of-fit coefficient(r31)
• Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
• (tknd)
• Actual Azimuth(actaz)
• Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
• Blackbody kinetic temperature(tkbb)
• Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
• Temperature correction coefficient at 31.4 GHz(tc31)
• base time(base_time)
• 23.8 GHz goodness-of-fit coefficient(r23)
• 31.4 GHz blackbody(bb31)
• Mixer kinetic (physical) temperature(tkxc)
• 23.8 GHz blackbody+noise injection signal(bbn23)
• Temperature correction coefficient at 23.8 GHz(tc23)
• Water on Teflon window (1=WET, 0=DRY)(wet_window)
• Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
• lon(lon)
• Dummy altitude for Zeb(alt)
• 31.4 GHz sky signal(tipsky31)
• 31.4 GHz blac2body+noise injection signal(bbn31)
• Actual elevation angle(actel)
• Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
• 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
• 23.8 GHz sky signal(tipsky23)
• Ambient temperature(tkair)
• lat(lat)
• Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
• Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
• Time offset of tweaks from base_time(time_offset)

• Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
• Third cloud base height(third_cbh)
• Time offset of tweaks from base_time(time_offset)
• Dummy altitude for Zeb(alt)
• Flag indicating aeri retrieval status(status_flag)
• Aerosol backscatter coefficient at 355 nm(backscatter)
• Millivolts at internal ADC input (0 to 2500)(background_light)
• range(range)
• Vertical visibility(vertical_visibility)
• lon(lon)
• Degrees from vertical (0 to +90)(tilt_angle)
• Altitude of highest signal(alt_highest_signal)
• Lowest cloud base height detected.(first_cbh)
• Backscatter sum(sum_backscatter)
• lat(lat)
• Percentage of nominal factory setting (0 to 999%)(laser_pulse_energy)
• Detection status. See details(detection_status)
• Warning and alarm status bits(status_string)
• 6 character string describing instrument measurement parameters(measurement_parameters)
• base time(base_time)
• Second lowest cloud base height(second_cbh)
• Laser temperature(laser_temperature)
• GPS raw data filename(filename)
• Millivolts at internal ADC input(window_contamination)

• Number of valid heights(nheight)
• Rx Bandwidth Switch Code(bswitch)
• Range Gate Spacing(rgs)
• Ave Time per Average Spectra.(spcavetim)
• Delay Time to 1st Gate(dly)
• elevation(elevation)
• Spectral Data (signal strength/freq int)(spc_amp)
• Interpulse Period(ipp)
• Radial Velocity Spectral Resolution(vsr)
• lon(lon)
• Height of Center of Last Range Gate(rgl)
• Time offset of tweaks from base_time(time_offset)
• Time Domain Integration Time(tditime)
• base time(base_time)
• Vertical FFT Bandwidth(vband)
• Sample Rate(sampr)
• Height of Center of First Range Gate(rgf)
• Dummy altitude for Zeb(alt)
• Pulse Repetition Frequency(prf)
• Array of heights for each sample time(height_t)
• Oblique FFT Bandwidth(oband)
• Number of Pulse Code Bits(pcbits)
• Number of Coherent Samples/spectral point(ncoh)
• Number of Individual Spectra/Average Spectrum(nspc)
• Individual Spectrum Integration Time(sitime)
• Particle radius at logarithmic center of bin(bins)
• Height Index(range_gate)
• lat(lat)
• Beam Number(beam)
• Pulse Length(plen)

• IR Brightness Temperature(ir_temp)
• Ambient temperature(tkair)
• MWR column precipitable water vapor(vap)
• Water on Teflon window (1=WET, 0=DRY)(wet_window)
• 23.8 GHz sky signal(sky23)
• Sky brightness temperature at 23.8 GHz(tbsky23)
• Sky brightness temperature at 31.4 GHz(tbsky31)
• base time(base_time)
• Blackbody kinetic temperature(tkbb)
• Temperature correction coefficient at 23.8 GHz(tc23)
• 31.4 GHz blackbody(bb31)
• 31.4 GHz sky signal(sky31)
• Dummy altitude for Zeb(alt)
• (tknd)
• Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
• Actual Azimuth(actaz)
• Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
• 23.8 GHz Blackbody signal(bb23)
• 31.4 GHz blac2body+noise injection signal(bbn31)
• Time offset of tweaks from base_time(time_offset)
• lon(lon)
• Averaged total liquid water along LOS path(liq)
• lat(lat)
• Mixer kinetic (physical) temperature(tkxc)
• Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
• Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
• Actual elevation angle(actel)
• Sky Infra-Red Temperature(sky_ir_temp)
• 23.8 GHz blackbody+noise injection signal(bbn23)
• Temperature correction coefficient at 31.4 GHz(tc31)

• Wave number(wnum)
• Logical flag indicating that a data record is missing (true/false(missingDataFlag)
• Ambient air temperature at hatch opening(outsideAirTemp)
• Time offset of tweaks from base_time(time_offset)
• Version number of Operational Software(systemReleaseNumber)
• Ambient temperature used in calibration(calibrationAmbientTemp)
• Maximum departure from ideal of the mirror position over the course of all
  contributing views. Typically two hot, two ambient, and one scene view are
  examine(sceneMirPosEncoderMaxDrift)
• Time at center of AERI sky observation period(Time_UTC_hours)
• Hot blackbody temperature used in calibration(calibrationHBBtemp)
• time(time)
• base time(base_time)
• Logical flag indicating whether hatch is open (true) or not open (false)(hatchOpen)
• Type of scene that has been calibrated (ASCII character as float)(calibratedSceneID)
• Observation atmospheric pressure in AERI electronics(atmosphericPressure)
• wavenumbers for standard deviation of radiance spectra(wnum2)
• Dummy altitude for Zeb(alt)
• Time (HHMMSS)(timeHHMMSS)
• lon(lon)
• Cold blackbody temperature used in calibration(calibrationCBBtemp)
• BB Support Structure Temperature(BBsupportStructureTemp)
• Observation longitude(Longitude)
• Character string containing instrument name(instrumentUnitNumber)
• AERI instrument data channel number(channelNumber)
• Observation Altitude(Altitude)
• Observation relative humidity at AERI blackbodies(atmosphericRelativeHumidity)
• AERI instrument unit serial number(AERIunitNumber)
• Julian Day including day and fraction of day(JulianDay)
• lat(lat)
• Mean of radiance spectra ensemble(mean_rad)
• Standard deviation of radiance spectra ensemble(standard_dev_mean_rad)
• Scene mirror view angle in non-negative degrees, measured clockwise looking into
  interferometer window.(sceneMirrorAngle)
• Observation date(dateYYMMDD)
• Duration of scene view(sceneViewDuration)
• Observation latitude(Latitude)

• Delay to First Range Gate(StartGateDelay)
• Time offset of tweaks from base_time(time_offset)
• Receiver Cal Time Stamp(RxCalTimeStamp)
• Number of Coherent Integrations(NumCoherentIntegrations)
• Max. height of clutter removal(ClutterHeight)
• Circular Depolarization Ratio(CircularDepolarizationRatio)
• DC Filtering ON-OFF Status(DCFilterONOFF)
• Average Noise Level (S/N<0)(AvgNoiseLevel)
• Pulse Width(PulseWidth)
• Current Receiver Number(ReceiverNumber)
• Receiver Gain(RxGain)
• RadarWaveLength(m) / [4 * InterPulsePeriod(s) * NumCoherentIntegrations](NyquistVelocity)
• Windowing ON-OFF Status(WindowingONOFF)
• MMCR Spectral Width(SpectralWidth)
• Gate Spacing(GateSpacing)
• Mean Noise Level(NoiseLevel)
• Receiver 290K Level(Rx290KLevel)
• Number of Receiver(NumReceivers)
• Minimum detectable reflectivity(MinimumDetectableReflectivity)
• TWT Status Code, details forthcoming from MMCR vendor(TWTStatusCode)
• MMCR Reflectivity(Reflectivity)
• Receiver Cal Check Level(CalCheckLevel)
• Receiver Cal Check Time Stamp(CalCheckTime)
• Number of Code Bits(NumCodeBits)
• lon(lon)
• Inter-Pulse Period(InterPulsePeriod)
• Range Corrected Calibrated Power(RangeCorrectedPower)
• Dummy altitude for Zeb(alt)
• Receiver Sky Noise(SkyNoiseLevel)
• Time associated with hourly averaged values(TimeAvg)
• Data Quality Status(DataQualityStatus)
• lat(lat)
• Operating Set for this Record(ModeNum)
• Radar Constant(RadarConstant)
• radar mode char identifier(ModeDescription)
• Power (uncalibrated)(Power)
• Receiver Mode(ReceiverMode)
• Number of Spectral Averages(NumSpectralAverages)
• MMCR Mean Doppler Velocity(MeanDopplerVelocity)
• base time(base_time)
• Number of Gate Heights(NumHeights)
• Number of Points in FFT(NumFFT)
• Array of heights for each power(heights)
• Peak tranmitted power, averaged over the course of the hour(PeakTransmittedPowerAvg)
• time(time)
• Signal to Noise Ratio(SignalToNoiseRatio)

SGP/AOS/C1 - Failed RH sensor

The RH sensor inside the humidified nephelometer began to slowly decline in value in the 
upper RH range beginning in early 2004 and becoming more noticable poor on 20041117. The 
sensor currently reaches a high RH value of about 60% when the actual RH is closer to 80%.

The sensor was replaced in the Spring of 2005, but the problem remained.  Effective 
1/1/2004, this sensor is not used to calculate scientific data and is therefore essentially 
abandoned in the field.  An end-date of 20050501 is being used as a placeholder.

• TSI High RH Neph. relative humidity(TSINephRHSamp_HRH)

SGP/SIRS/C1 - Monthly Summary

dominant problem here is the daytime 3 component problem. Direct and Diffuse are
always too high and Global is too low. The problem occurs around the time that the
testing regime switches from twilight to daytime testing regimes or from daytime to
twilight. The flags occur in significant numbers on the 1st - 5th, 8th - 20th, 24th - 
28th,
30th, and 31st. The failures vary in magnitude and duration. The worst flags for a 
particular
day is typically high level yellow, with respect to this problem. Global goes below
daytime empirical limits on both the 5th and 6th for substantial periods of time. Diffuse
also goes below daytime empirical limits on the 6th in the evening. Upwelling Longwave is
below empirical limits on the 24th. This may not be a problem, as many sites exhibited
the same problem on the same night. Exceptionally cold temperatures may be the cause.
Direct also exceeds its daytime empirical limit on the 1st, 4th, 10th, 13th, 14th, and 
20th. This occurs
at the changeover from medium to high air mass and does not last for longer than 30 
minutes.

• Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
• Down-welling unshaded pyranometer voltage(down_short_hemisp)
• Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Upwelling (10 meter) Longwave Hemispheric Irradiance, Pyrgeometer(up_long_hemisp)
• Upwelling (10 meter) Shortwave Hemispheric Irradiance, Pyranometer(up_short_hemisp)

SGP/SMOS/E1 - Wind Data Suspect

Both wind speed and direction data are affected by icing during time period causing 
suspect readings.

• Unit Vector Wind Direction(wdir)
• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)

• Wind Speed (vector averaged)(wspd_va)
• Mean Wind Speed(wspd)
• Standard Deviation of wind direction(sd_deg)
• Unit Vector Wind Direction(wdir)
• Standard Deviation of Wind Speed(sd_wspd)

• Time of Minimum Wind Speed(time_min_wspd)
• Time of Maximum Wind Speed(time_max_wspd)
• maximum wind speed (gusts)(max_wspd)
• Minimum of Wind speed(min_wspd)

TWP/SMET/C3 - Data non-representative

Tower mast was lowered for inspection.  Data during this time is non-representative.

• Lower sensor, wind speed minimum(lo_spd_min)
• Precipitation maximum(precip_max)
• Lower sensor, wind direction standard deviation(lo_dir_sd)
• precipitation minimum(precip_min)
• Upper sensor, wind speed maximum(up_spd_max)
• Tipping bucket raingauge total(tbrg_total)
• Mean Air Temperature or Hardware Error(temp_mean)
• Upper sensor, wind direction standard deviation(up_dir_sd)
• Vapor pressure mean(vappress_mean)
• Lower sensor, wind speed arithmetic average(lo_spd_arith_avg)
• Barometric Pressure(atmos_pressure)
• Lower sensor, wind speed standard deviation(lo_spd_sd)
• Vapor pressure standard deviation(vappress_sd)
• Lower sensor, wind speed maximum(lo_spd_max)
• Mean Relative Humidity(relh_mean)
• Upper sensor, wind speed arithmetic average(up_spd_arith_avg)
• Lower sensor, wind speed vector average(lo_spd_vec_avg)
• Upper sensor, wind direction vector average(up_dir_vec_avg)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Precipitation mean(precip_mean)
• Lower sensor, wind direction vector average(lo_dir_vec_avg)
• Precipitation standard deviation(precip_sd)
• Upper sensor, wind speed minimum(up_spd_min)
• Tipping bucket raingauge count total(tbrg_count_total)
• Upper sensor, wind speed standard deviation(up_spd_sd)
• Std Dev of Air Temperature(temp_sd)
• Upper sensor, wind speed vector average(up_spd_vec_avg)

TWP/SMET/C2 - Upper wind direction sensor failure

The upper wind direction sensor failed. Wind direction was reported at a near constant 
value of 69 degrees and was significantly different than the lower wind sensor's direction 
values. Sensor replaced.

• Upper sensor, wind direction vector average(up_dir_vec_avg)
• Upper sensor, wind direction standard deviation(up_dir_sd)

TWP/SMET/C2 - Upper wind direction sensor failure

After replacement on 03/03/2005 the upper wind direction sensor began reporting erroneous 
values again on 03/09/2005 becoming very apparent after 03/17/2005.  Wind speed data 
appears reasonable but the wind direction data do not agree well with the lower wind sensor.

• Upper sensor, wind direction vector average(up_dir_vec_avg)
• Upper sensor, wind direction standard deviation(up_dir_sd)

SGP/AOS/C1 - wet nephelometer out of service

The humidified nephelometer was removed and shipped back to CMDL to test and work on the 
relative humidity sensor inside the instrument.

• TSI High RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_HRH)
• TSI High RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_HRH)
• TSI High RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_HRH)
• TSI High RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_HRH)
• Temp. downstream of humidograph(HGdownstream_T)
• TSI High RH Neph. Pressure(TSINephPres_HRH)
• TSI High RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_HRH)
• TSI High RH Neph. Sample Temperature(TSINephTSamp_HRH)
• TSI High RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_HRH)
• RH upstream of humidograph(HGupstream_RH)
• TSI High RH Neph. relative humidity(TSINephRHSamp_HRH)
• TSI High RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_HRH)
• Temp. upstream of humidograph(HGupstream_T)
• TSI High RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_HRH)
• RH downstream of humidograph(HGdownstream_RH)
• TSI High RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_HRH)
• TSI High RH Neph. inlet temperature(TSINephTin_HRH)
• TSI High RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_HRH)
• TSI High RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_HRH)
• TSI High RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_HRH)

TWP/SMET/C3 - Lower wind direction sensor failure

The lower wind direction sensor failed on 4/14 and disagrees significantly with the upper 
wind direction sensor.  The lower wind sensor reports a constant value around 0-15 
degrees since it failed.  Testing showed that excitation channel two on the logger was the 
problem.  Logger was replaced by spare.

• Lower sensor, wind direction vector average(lo_dir_vec_avg)
• Lower sensor, wind direction standard deviation(lo_dir_sd)

TWP/SMET/C1 - Negative rainfall rates

Due to limitations of the Zeno dataloggers all voltage measurements
from the optical rain gauge (ORG) were converted to rainfall rates. 
This resulted in negative values for rain rates.  Any value below 0.10 mm/hr should be 
considered to be 0 mm/hr.  New dataloggers 
alleviated this problem.  New loggers were installed 03/09/2004 @ 2243 GMT.

• Precipitation mean(precip_mean)
• Precipitation maximum(precip_max)
• Precipitation standard deviation(precip_sd)
• precipitation minimum(precip_min)

TWP/SMET/C2 - RH sensor failure

Relative humidity values were frequently over MAX value of 104% starting on 7/10/2005 
through end of period.  Sensor was replaced.

• Mean Relative Humidity(relh_mean)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)

TWP/SMET/C3 - Data not representative

Tower was lowered for radiometer change and characterization. Data are not representative 
of local conditions.

• Lower sensor, wind speed minimum(lo_spd_min)
• Precipitation maximum(precip_max)
• Lower sensor, wind direction standard deviation(lo_dir_sd)
• precipitation minimum(precip_min)
• Upper sensor, wind speed maximum(up_spd_max)
• Tipping bucket raingauge total(tbrg_total)
• Mean Air Temperature or Hardware Error(temp_mean)
• Upper sensor, wind direction standard deviation(up_dir_sd)
• Vapor pressure mean(vappress_mean)
• Lower sensor, wind speed arithmetic average(lo_spd_arith_avg)
• Barometric Pressure(atmos_pressure)
• Lower sensor, wind speed standard deviation(lo_spd_sd)
• Vapor pressure standard deviation(vappress_sd)
• Lower sensor, wind speed maximum(lo_spd_max)
• Mean Relative Humidity(relh_mean)
• Upper sensor, wind speed arithmetic average(up_spd_arith_avg)
• Lower sensor, wind speed vector average(lo_spd_vec_avg)
• Upper sensor, wind direction vector average(up_dir_vec_avg)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Precipitation mean(precip_mean)
• Lower sensor, wind direction vector average(lo_dir_vec_avg)
• Precipitation standard deviation(precip_sd)
• Upper sensor, wind speed minimum(up_spd_min)
• Tipping bucket raingauge count total(tbrg_count_total)
• Upper sensor, wind speed standard deviation(up_spd_sd)
• Std Dev of Air Temperature(temp_sd)
• Upper sensor, wind speed vector average(up_spd_vec_avg)

TWP/SMET/C2 - Instrument maintenance

Instrument calibration and testing were taking place for brief periods.

• Mean Relative Humidity(relh_mean)
• Upper sensor, wind speed minimum(up_spd_min)
• Mean Air Temperature or Hardware Error(temp_mean)
• Upper sensor, wind speed maximum(up_spd_max)
• Upper sensor, wind speed arithmetic average(up_spd_arith_avg)
• Upper sensor, wind direction standard deviation(up_dir_sd)
• Upper sensor, wind speed vector average(up_spd_vec_avg)
• Lower sensor, wind speed arithmetic average(lo_spd_arith_avg)
• Lower sensor, wind speed maximum(lo_spd_max)
• Lower sensor, wind speed standard deviation(lo_spd_sd)
• Upper sensor, wind speed standard deviation(up_spd_sd)
• precipitation minimum(precip_min)
• Tipping bucket raingauge count total(tbrg_count_total)
• Vapor pressure mean(vappress_mean)
• Lower sensor, wind speed minimum(lo_spd_min)
• Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
• Std Dev of Air Temperature(temp_sd)
• Tipping bucket raingauge total(tbrg_total)
• Barometric Pressure(atmos_pressure)
• Lower sensor, wind direction vector average(lo_dir_vec_avg)
• Vapor pressure standard deviation(vappress_sd)
• Precipitation maximum(precip_max)
• Lower sensor, wind speed vector average(lo_spd_vec_avg)
• Upper sensor, wind direction vector average(up_dir_vec_avg)
• Precipitation mean(precip_mean)
• Lower sensor, wind direction standard deviation(lo_dir_sd)
• Precipitation standard deviation(precip_sd)

TWP/SMET/C2 - ORG data incorrect

Data from the ORG was incorrect due to heavy condensation on the lens.

• Precipitation maximum(precip_max)
• Precipitation mean(precip_mean)
• precipitation minimum(precip_min)
• Precipitation standard deviation(precip_sd)

SGP/SIRS/C1  - sun tracker power failure

C1 experienced a sun tracker power faulure.  The tracker was reset by onsite personnel 
shortly after the power failed.  Only shaded and direct instruments were affected - i.e. the 
downwelling diffuse measurement from the 8-48 B&W pyranometer and the direct normal 
measurement from the NIP pyrheliometer.  The downwelling longwave PIR data was unaffected by 
this event.

• Downwelling Shortwave Hemispheric Irradiance, Pyranometer, Standard Deviation(down_short_diffuse_hemisp_std)
• Shortwave Direct Normal Irradiance, Pyrgeometer(short_direct_normal)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Maxima(short_direct_normal_max)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Standard Deviation(short_direct_normal_std)
• Shortwave Direct Normal Irradiance, Pyrgeometer, Minima(short_direct_normal_min)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Maxima(down_short_diffuse_hemisp_max)
• Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
  Minima(down_short_diffuse_hemisp_min)

• null(Raw data stream - documentation not supported)

• Instantaneous Direct Normal Shortwave Irradiance, Pyheliometer Thermopile
  Voltage(inst_direct_normal)
• Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
  Thermopile Voltage(inst_diffuse)

SGP/AOS/C1 - Nephelometer calibration drift

Bad span check on the humidified nepehelometer.  Instrument was recalibrated and returned 
to service on 10/28/2005 at 1940 UTC.

• TSI High RH Neph. 450 nm rayleigh scattering coefficient for zero gas(BluRScatZero_HRH)
• TSI High RH Neph. 450 nm total scattering coefficient for cal. gas(BluTScatSpn_HRH)
• TSI High RH Neph. 450 nm back scattering coefficient for zero gas(BluBScatZero_HRH)
• TSI High RH Neph. 450 nm total scattering coefficient for zero gas(BluTScatZero_HRH)
• TSI High RH Neph. 450 nm back scattering coefficient for cal. gas(BluBScatSpn_HRH)

• TSI High RH Neph. 700 nm total scat. coef. at 1 um(RedTScatCoef_1um_HRH)
• TSI High RH Neph. 450 nm backscat. coef. at 1 um(BluBScatCoef_1um_HRH)
• TSI High RH Neph. 550 nm total scat. coef. at 10 um(GrnTScatCoef_10um_HRH)
• TSI High RH Neph. 450 nm total scat. coef. at 10 um(BluTScatCoef_10um_HRH)
• TSI High RH Neph. Pressure(TSINephPres_HRH)
• TSI High RH Neph. 450 nm total scat. coef. at 1 um(BluTScatCoef_1um_HRH)
• TSI High RH Neph. Sample Temperature(TSINephTSamp_HRH)
• TSI High RH Neph. 700 nm backscat. coef. at 10 um(RedBScatCoef_10um_HRH)
• RH upstream of humidograph(HGupstream_RH)
• TSI High RH Neph. relative humidity(TSINephRHSamp_HRH)
• TSI High RH Neph. 700 nm backscat. coef. at 1 um(RedBScatCoef_1um_HRH)
• TSI High RH Neph. 550 nm backscat. coef. at 1 um(GrnBScatCoef_1um_HRH)
• RH downstream of humidograph(HGdownstream_RH)
• TSI High RH Neph. 550 nm backscat. coef. at 10 um(GrnBScatCoef_10um_HRH)
• TSI High RH Neph. 550 nm total scat. coef. at 1 um(GrnTScatCoef_1um_HRH)
• TSI High RH Neph. inlet temperature(TSINephTin_HRH)
• TSI High RH Neph. 700 nm total scat. coef. at 10 um(RedTScatCoef_10um_HRH)
• TSI High RH Neph. 450 nm backscat. coef. at 10 um(BluBScatCoef_10um_HRH)