Data Quality Reports for Session: 106013 User: sloehrer Completed: 06/12/2007


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D040416.1TWP/GNDRAD/C3 - IRT biastwpgndrad60sC3.b1
D040428.1TWP/SMET/C1 - Poor Performing Sensortwpsmet60sC1.b1
D050105.1TWP/SONDE/C1 - Bad RH at beginning of soundingtwpsondewnpnC1.b1
D050201.2TWP/SONDE/C1 - Bad RH at beginning of soundingtwpsondewnpnC1.b1
D050210.1TWP/SMET/C3 - Data non-representativetwpsmet60sC3.b1
D050219.2TWP/SKYRAD/C2 - IRT biastwpskyrad60sC2.b1
D050301.1TWP/SMET/C2 - Instrument failuretwpsmet60sC2.b1
D050322.2TWP/SMET/C2 - Upper wind sensor failuretwpsmet60sC2.b1
D050418.2TWP/SMET/C3 - Instrument logger problem, Sensor failuretwpsmet60sC3.b1
D050504.2TWP/GNDRAD/C2 - IRT connectortwpgndrad60sC2.b1
D050714.1TWP/SMET/C2 - RH failuretwpsmet60sC2.b1
D050714.3TWP/SKYRAD/C1 - Apparent logger problemtwpskyradC1.00, twpskyrad20sC1.a1, twpskyrad60sC1.b1, twpskyrad1duttC1.c1,
twp1swfanalskyrad1longC1.c1, twp15swfanalskyrad1longC1.c1
D050808.3TWP/SMET/C3 - Data not representativetwpsmet60sC3.b1
D050815.1TWP/GNDRAD/C2 - IRT power supply failedtwpgndradC2.00, twpgndrad60sC2.b1
D050831.4TWP/SMET/C3 - Towrr lowered for sensor comparisons, data not representativetwpsmet60sC3.b1
D050913.3TWP/SONDE/C2 - Bad RH sensortwpsondewnpnC2.b1
D050919.4TWP/GNDRAD/C3 - Tower inverted for instrument testing and replacementtwpgndrad60sC3.b1
D050920.4TWP/SMET/C2 - Instrument maintenancetwpsmet60sC2.b1
D050921.2TWP/SMET/C2 - ORG data incorrecttwpsmet60sC2.b1
D050926.6TWP/GNDRAD/C2 - Gndrad inverted for radiometertwpgndrad60sC2.b1
D051005.6TWP/SMET/C2 - Tower down for calibration activitiestwpsmet60sC2.b1
D051114.3TWP/SKYRAD/C3 - tracker inoperativetwpskyradC3.00, twpskyrad20sC3.a0, twpskyrad60sC3.b1
D051115.1TWP/SMET/C3 - Upper wind sensor failuretwpsmet60sC3.b1
D051117.2TWP/SMET/C3 - RH Values Artificially Hightwpsmet60sC3.b1
D051117.3TWP/SMET/C3 - Instrument failuretwpsmet60sC3.b1
D051119.1TWP/SKYRAD/C1 - IRT failuretwpskyrad60sC1.b1
D051122.2TWP/SONDE/C2 - Broken temperature sensortwpsondewnpnC2.b1
D051123.2TWP/GNDRAD/C1 - Gndrad inverted for comparison of radiometerstwpgndrad60sC1.b1
D051202.3TWP/SKYRAD/C3 - Reprocess: Incorrect datalogger program affecting PIR1 and PIR2
downwelling longwave
twpskyrad60sC3.b1
D051202.5TWP/SKYRAD/C1 - Reprocess: Incorrect datalogger program affecting PIR1 and PIR2
downwelling longwave
twpskyrad20sC1.a0, twpskyrad60sC1.b1
D051202.6TWP/SKYRAD/C2 - Reprocess: Incorrect datalogger program affecting PIR1 and PIR2
downwelling longwave
twpskyrad20sC2.a0, twpskyrad60sC2.b1
D051206.5TWP/GNDRAD/C3 - IRT malfunctiontwpgndrad60sC3.b1
D051219.2TWP/SONDE/C2 - Broken temperature sensortwpsondewnpnC2.b1
D060110.3TWP/SKYRAD/C3 - IRT damagedtwpskyrad20sC3.a0, twpskyrad60sC3.b1
D060111.1TWP/GNDRAD/C3 - IRT powertwpgndrad60sC3.b1
D060217.1TWP/SKYRAD/C3 - Tracker stoppedtwpskyrad60sC3.b1
D060223.7TWP/SKYRAD/C3 - Solar Tracker locking at solar noontwpskyradC3.00, twpskyrad20sC3.a0, twpskyrad20sC3.a1, twpskyrad60sC3.b1
D060308.1TWP/SONDE/C2 - Broken temperature sensortwpsondewnpnC2.b1
D060403.2TWP/SONDE/C2 - Broken temperature sensortwpsondewnpnC2.b1
D060418.1TWP/SONDE/C2 - Bad RH in lower 8kmtwpsondewnpnC2.b1
D060426.8TWP/SMET/C3 - ORG data noisy due to degraded groundtwpsmet60sC3.b1
D060502.3TWP/SMET/C3 - Reprocess: Windspeed2 calibration errortwpsmet60sC3.b1
D060509.1TWP/GNDRAD/C3 - IRT failedtwpgndrad60sC3.b1
D060522.1TWP/SMET/C1 - Upper wind speed sensor failuretwpsmet60sC1.b1
D060614.2TWP/SMET/C2 - Temp/RH probe failuretwpsmet60sC2.b1
D060627.1TWP/SMET/C3 - Anemometer Readings Incorrecttwpsmet60sC3.b1
D060630.31TWP/SKYRAD/C1 - Reprocess: Longwave Calibration errortwpskyrad60sC1.b1
D060630.32TWP/SKYRAD/C2 - Reprocess: Longwave Calibration errortwpskyrad60sC2.b1
D060630.33TWP/SKYRAD/C3 - Reprocess: Longwave Calibration errortwpskyrad60sC3.b1
D060630.34TWP/GNDRAD/C1 - Reprocess: Longwave Calibration errortwpgndrad60sC1.b1
D060630.35TWP/GNDRAD/C2 - Reprocess: Longwave Calibration errortwpgndrad60sC2.b1
D060630.36TWP/GNDRAD/C3 - Reprocess: Longwave Calibration errortwpgndrad60sC3.b1
D060804.1TWP/SKYRAD/C2 - IRT signal losstwpskyrad60sC2.b1
D060817.3TWP/SMET/C1 - Reprocess: Barometric Data Changed from hPa to kPatwpsmet60sC1.b1
D060818.2TWP/SMET/C2 - Reprocess: Barometric Data Changed from hPa to kPatwpsmet60sC2.b1
D060818.3TWP/SMET/C3 - Reprocess: Barometric Data Changed from hPa to kPatwpsmet60sC3.b1
D060823.1TWP/GNDRAD/C3 - IRT biastwpgndrad60sC3.b1
D061011.2TWP/SMET/C1 - Reprocess: Tipping bucket rain gauge addedtwpsmet60sC1.b1
D061011.3TWP/SMET/C2 - Reprocess: Tipping bucket rain gauge addedtwpsmet60sC2.b1
D061011.4TWP/SMET/C3 - Reprocess: Tipping bucket rain gauge addedtwpsmet60sC3.b1
D061016.1TWP/SKYRAD/C2 - IRT signaltwpskyrad60sC2.b1
D061120.1TWP/SKYRAD/C3 - NIP Failuretwpskyrad20sC3.a0, twpskyrad60sC3.b1
D061214.1TWP/SKYRAD/C3 - NIP instrument failuretwpskyradC3.00, twpskyrad20sC3.a0, twpskyrad60sC3.b1
D070110.1TWP/GNDRAD/C2 - IRT signaltwpgndrad60sC2.b1
D070404.2TWP/SKYRAD/C2 - IRT calibrationtwpskyrad60sC2.b1


DQRID : D040416.1
Start DateStart TimeEnd DateEnd Time
04/07/2004023004/08/20041200
04/12/2004060004/27/20041400
05/08/2004030005/15/20042200
05/27/2004110006/09/20040000
12/29/2004110001/06/20052300
Subject:
TWP/GNDRAD/C3 - IRT bias
DataStreams:twpgndrad60sC3.b1
Description:
The IRT behaved erratically, jumping frequently from reporting about 50 Wm^(-2) higher 
than the PIR for surface irradiance values to about 100Wm^(-2) lower than the PIR.  
Generally, the IRT measured lower surface temperatures than expected from the PIR.
Measurements:twpgndrad60sC3.b1:
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)


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DQRID : D040428.1
Start DateStart TimeEnd DateEnd Time
04/23/2004000001/19/20051530
Subject:
TWP/SMET/C1 - Poor Performing Sensor
DataStreams:twpsmet60sC1.b1
Description:
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.
Measurements:twpsmet60sC1.b1:
  • Precipitation mean(precip_mean)
  • Precipitation maximum(precip_max)
  • Precipitation standard deviation(precip_sd)
  • precipitation minimum(precip_min)


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DQRID : D050105.1
Start DateStart TimeEnd DateEnd Time
12/30/2004233012/31/20040108
Subject:
TWP/SONDE/C1 - Bad RH at beginning of sounding
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 0km and 11km).  The RH oscillates rapidly between low (~5 %RH) and 
not so low (~70 %RH) and the oscillation seems to stop when the temperature is below ~40 
degC.  According to Vaisala these are symptoms of failure in the ASIC (application 
specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


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DQRID : D050201.2
Start DateStart TimeEnd DateEnd Time
01/07/2005233001/08/20050102
Subject:
TWP/SONDE/C1 - Bad RH at beginning of sounding
DataStreams:twpsondewnpnC1.b1
Description:
It appears that the RH sensor heating circuit failed during this portion of the sounding 
(approximately between 0km and 12km).  The RH oscillates rapidly between low (~2 %RH) and 
not so low (~80 %RH) and the oscillation seems to stop when the temperature is below ~40 
degC.  According to Vaisala these are symptoms of failure in the ASIC (application 
specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC1.b1:
  • Surface dew point temperature(dp)
  • Relative humidity scaled, by total column amount from MWR(rh)


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DQRID : D050210.1
Start DateStart TimeEnd DateEnd Time
02/09/2005231002/09/20052320
Subject:
TWP/SMET/C3 - Data non-representative
DataStreams:twpsmet60sC3.b1
Description:
Tower mast was lowered for inspection.  Data during this time is non-representative.
Measurements:twpsmet60sC3.b1:
  • Precipitation maximum(precip_max)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #1 speed minimum(wind1_spd_min)
  • Wind #2 speed maximum(wind2_spd_max)
  • precipitation minimum(precip_min)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #2 speed minimum(wind2_spd_min)
  • Max Temperature at lowest Model Level- 1 hr(temp_max)
  • Vapor pressure mean(vappress_mean)
  • Atmospheric pressure(atmos_pressure)
  • Vapor pressure standard deviation(vappress_sd)
  • Relative humidity mean(relh_mean)
  • Relative humidity maximum(relh_max)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #2 direction vector average(wind2_dir_vec_avg)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • Relative humidity minimum(relh_min)
  • Precipitation mean(precip_mean)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Min Temperature at lowest Model Level- 1 hr(temp_min)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Precipitation standard deviation(precip_sd)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #2 direction standard deviation(wind2_dir_sd)
  • Wind #2 speed standard deviation(wind2_spd_sd)
  • Temperature standard deviation(temp_sd)


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DQRID : D050219.2
Start DateStart TimeEnd DateEnd Time
02/07/2005045404/17/20052023
Subject:
TWP/SKYRAD/C2 - IRT bias
DataStreams:twpskyrad60sC2.b1
Description:
The IRT was measuring higher sky temperatures than AERI. The problem was corrected by 
changing the mirror.
Measurements:twpskyrad60sC2.b1:
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)


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DQRID : D050301.1
Start DateStart TimeEnd DateEnd Time
02/12/2005195503/03/20050430
Subject:
TWP/SMET/C2 - Instrument failure
DataStreams:twpsmet60sC2.b1
Description:
Upper wind 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.
Measurements:twpsmet60sC2.b1:
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Wind #1 direction vector average(wind1_dir_vec_avg)


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DQRID : D050322.2
Start DateStart TimeEnd DateEnd Time
03/09/2005230004/17/20050332
Subject:
TWP/SMET/C2 - Upper wind sensor failure
DataStreams:twpsmet60sC2.b1
Description:
After replacement on 03/03/2005 the upper wind 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.
Measurements:twpsmet60sC2.b1:
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Wind #1 direction vector average(wind1_dir_vec_avg)


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DQRID : D050418.2
Start DateStart TimeEnd DateEnd Time
04/14/2005023004/19/20050050
Subject:
TWP/SMET/C3 - Instrument logger problem, Sensor failure
DataStreams:twpsmet60sC3.b1
Description:
The wind_lower direction sensor failed on 4/14 and disagrees significantly with the 
wind_upper direction.  The wind_lower 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.
Measurements:twpsmet60sC3.b1:
  • Wind #2 direction standard deviation(wind2_dir_sd)
  • Wind #2 direction vector average(wind2_dir_vec_avg)


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DQRID : D050504.2
Start DateStart TimeEnd DateEnd Time
03/27/2005233004/03/20050240
Subject:
TWP/GNDRAD/C2 - IRT connector
DataStreams:twpgndrad60sC2.b1
Description:
The IRT had a problem with the connector of either the signal or power cable which 
produced an output of 0 volts equivalent to a measurement of 223K. The problem was corrected 
when the connectors were cleaned and tightened.
Measurements:twpgndrad60sC2.b1:
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)


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DQRID : D050714.1
Start DateStart TimeEnd DateEnd Time
07/10/2005190007/14/20052226
Subject:
TWP/SMET/C2 - RH failure
DataStreams:twpsmet60sC2.b1
Description:
The RH values were frequently over MAX value of 104% starting on 7/10/2005 through end of 
period.  Sensor was replaced.
Measurements:twpsmet60sC2.b1:
  • Relative humidity mean(relh_mean)
  • Relative humidity maximum(relh_max)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • Relative humidity minimum(relh_min)


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DQRID : D050714.3
Start DateStart TimeEnd DateEnd Time
07/13/2005062007/15/20051900
Subject:
TWP/SKYRAD/C1 - Apparent logger problem
DataStreams:twpskyradC1.00, twpskyrad20sC1.a1, twpskyrad60sC1.b1, twpskyrad1duttC1.c1,
twp1swfanalskyrad1longC1.c1, twp15swfanalskyrad1longC1.c1
Description:
Beginning at 0620Z on 13 July, all Manus SKYRAD measurements deviated wildly from expected 
values.  The longwave fluxes climbed to well over the expected maximum of 500 W/m^2 to 
values over 1000 W/m^2.  At the same time, shortwave flux components developed large 
inconsistancies and night-time offsets.  Values had somewhat returned to normal ranges by 
2200Z on 14 July but again developed internal inconsistancies between 0430 and 1900Z on 15 
July.  The instruments appeared to be working normally once again as of 1900Z on 15 July.  
It is not known what caused this period of faulty values but it is thought that an 
electrical surge - perhaps from a lightning storm (though none was reported) may have caused 
the temporary problems.
Measurements:twpskyrad1duttC1.c1:
  • Time offset from base_time(base_time)
  • Time offset from midnight of date of file. For CO data, this is identical to
    time_offset and is included for compatibility.(time)
  • Wind #1 Direction(wind_direction_1)
  • Full correction mode for Downwelling Shortwave Hemispheric Irradiance,
    Ventilated Pyrgeometer(dsdh_full_corrected_mode)
  • Downwelling Pyrgeometer Case Thermistor Temperature, Backup(down_long_case_temperature_backup)
  • Status flag for Downwelling Shortwave Hemispheric Irradiance, Ventilated
    Pyrgeometer, Detector only corrected(status_dsdh_detector_corrected)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Uncorrected for IR loss, Minima(down_short_hemisp_uncorrected_min)
  • Downwelling Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_long_hemisp_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance Uncorrected, Pyrgeometer,
    Standard Deviation(down_short_diffuse_hemisp_uncorrected_std)
  • Effective temperature(effective_temperature)
  • Downwelling Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Backup(down_long_hemisp_backup)
  • Downwelling Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_long_hemisp)
  • Downwelling Pyrgeometer Dome Thermistor Temperature, Backup(down_long_dome_temperature_backup)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Uncorrected for IR loss, Standard Deviation(down_short_hemisp_uncorrected_std)
  • Detector Flux, Backup(detector_flux_backup)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(up_short_hemisp_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance Uncorrected, Pyrgeometer,
    Maxima(down_short_diffuse_hemisp_uncorrected_max)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • north latitude for all the input platforms.(lat)
  • Status flag for Rayleigh limit(status_rayleigh_limit)
  • Air Temperature(air_temperature)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp)
  • Solar Zenith Angle(zenith)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Upwelling Pyrgeometer Dome Thermistor Temperature(up_long_dome_temperature)
  • Downwelling Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_long_hemisp_max)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(up_short_hemisp_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • altitude above sea levelaltunits(alt)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Downwelling Shortwave Hemispheric Irradiance, Calculated, Sum of Direct
    Shortwave and Corrected Diffuse Shortwave(down_short_hemisp_sum)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Status flag for Downwelling Shortwave Hemispheric Irradiance, Ventilated
    Pyrgeometer, Full corrected (Mean absolute deviation)(status_dsdh_full_corrected)
  • barometric pressure(bar_pres)
  • Downwelling Pyrgeometer Case Thermistor Temperature(down_long_case_temperature)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Best
    Estimate(dsdh_best_estimate)
  • Downwelling Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Backup,
    Maxima(down_long_hemisp_backup_max)
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Wind #2 Speed(wind_speed_2)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance Uncorrected, Pyrgeometer,
    Minima(down_short_diffuse_hemisp_uncorrected_min)
  • Downwelling Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Backup,
    Standard Deviation(down_long_hemisp_backup_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • precipitation accumulated between outputs, 3-hr accumulation(precip)
  • Rayleigh limit(rayleigh_limit)
  • Downwelling Pyrgeometer Dome Thermistor Temperature(down_long_dome_temperature)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Uncorrected for IR loss, Maxima(down_short_hemisp_uncorrected_max)
  • Upwelling Pyrgeometer Case Thermistor Temperature(up_long_case_temperature)
  • Time offset of tweaks from base_time(time_offset)
  • Detector only correction mode for Downwelling Shortwave Hemispheric Irradiance,
    Ventilated Pyrgeometer(dsdh_detector_corrected_mode)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Detector
    only corrected(dsdh_detector_corrected)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • east longitude for all the input platforms.(lon)
  • Downwelling Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_long_hemisp_min)
  • Downwelling Longwave Hemispheric Irradiance, Ventilated Pyrgeometer, Backup,
    Minima(down_long_hemisp_backup_min)
  • Cosine of the Solar Zenith Angle(cos_zenith)
  • Wind #1 Speed(wind_speed_1)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance Uncorrected, Pyrgeometer(down_short_diffuse_hemisp_uncorrected)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Uncorrected for IR loss(down_short_hemisp_uncorrected)
  • Wind #2 Direction(wind_direction_2)
  • Detector flux (Down-welling pyrgeometer thermopile voltage * PIR-DIR calib-coef)
    Calculated value from 20s data(detector_flux)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Full
    corrected (Weighted Mean absolute deviation using Median)(dsdh_full_corrected)
  • Status flag for Downwelling Shortwave Hemispheric Irradiance, Ventilated
    Pyrgeometer, Sum of Direct Shortwave and Corrected Diffuse Shortwave(status_down_short_hemisp_sum)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(up_short_hemisp_max)

twp15swfanalskyrad1longC1.c1:
  • Measured Downwelling Global Shortwave Irradiance (gsw)(gswfluxdn_measured)
  • altitude above sea levelaltunits(alt)
  • Ratio of Clear-sky Fit Estimated Downwelling Diffuse Shortwave Irradiance to
    Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cdifr)(difratiodn_clearskyfit)
  • Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured)
  • Number of 1-minute Measured Downwelling Summed Shortwave Irradiances in the
    15-minute Interval (Nssw)(nsamples_sswfluxdn_measured)
  • Clear-sky Fit Estimated Downwelling Global UVB Irradiance (cguvb)(guvbdn_clearskyfit)
  • Arithmetic Average Distance from the Earth to the Sun (au)(sun_earth_distance)
  • Site Identification(site)
  • Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)
  • north latitude for all the input platforms.(lat)
  • Number of 1-minute Clear-sky Detections in the 15-minute Interval (Nclr)(nsamples_clearsky_detection)
  • Clear-sky Fit Estimated Downwelling Direct Shortwave Irradiance (cdir)(dirfluxdn_clearskyfit)
  • Clear-sky Fit Estimated Surface Albedo from Shortwave Irradiance Measurements
    (calb)(albedosw_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)
  • Estimated Average Fractional Sky Cover over the Hemispheric Dome (cf)(cloudfraction)
  • Number of 1-minute Cloud Fraction Estimates in the 15-minute Interval (Ncf)(nsamples_cloudfraction)
  • Beginning Time of File (LST)(base_time_LST)
  • Time Offset from base_time_LST(time_offset_LST)
  • Clear-sky Fit Estimated Downwelling Diffuse Field Shortwave Irradiance (cdif)(difswfluxdn_clearskyfit)
  • Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cgsw)(gswfluxdn_clearskyfit)
  • Measured Surface Albedo from Shortwave Irradiance Measurements (alb)(albedosw_measured)
  • Measured Downwelling Diffuse Shortwave Irradiance (dif)(difswfluxdn_measured)
  • east longitude for all the input platforms.(lon)
  • Ratio of Measured minus Clear-sky Fit Estimated Downwelling Diffuse Shortwave
    Irradiance to Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance
    (di(difcloudeffect_normalized)
  • Time offset of tweaks from base_time(time_offset)
  • Measured Downwelling Summed Shortwave Irradiance
    (dirfluxdn_measured+diffluxdn_measured) (ssw)(sswfluxdn_measured)
  • Time offset from base_time(base_time)
  • Arithmetic Average Cosine of the Solar Zenith Angle Z (CosZ)(solar_cos_z)
  • Ratio of Measured Downwelling Diffuse Shortwave Irradiance to Measured
    Downwelling Global Shortwave Irradiance (difr)(difratiodn_measured)
  • Number of 1-minute Clear-sky Fit Downwelling Global Shortwave Irradiance
    Estimates in the 15-minute Interval (Ncsw)(nsamples_gswfluxdn_clearskyfit)
  • Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
  • Clear-sky Fit Estimated Downwelling Summed Shortwave Irradiance
    (dirfluxdn_clearskyfit+diffluxdn_clearskyfit) (cssw)(sswfluxdn_clearskyfit)
  • Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
  • Measured Downwelling Global UVB Irradiance (guvb)(guvbdn_measured)

twp1swfanalskyrad1longC1.c1:
  • Clear-sky Fit Coefficient b to Diffuse Irradiance to Total Irradiance Ratio
    (DFRb)(coef_clearsky_difratio_b)
  • Measured Downwelling Direct Shortwave Irradiance (dir)(dirfluxdn_measured)
  • Measured Downwelling Global UVB Irradiance (guvb)(guvbdn_measured)
  • altitude above sea levelaltunits(alt)
  • Clear-sky Fit Estimated Downwelling Direct Shortwave Irradiance (cdir)(dirfluxdn_clearskyfit)
  • Clear-sky Fit Coefficient a to Summed Shortwave Irradiance (CSWa)(coef_clearsky_ssw_a)
  • Clear-sky Fit Coefficient a to Global UVB Irradiance (UVBa)(coef_clearsky_guvb_a)
  • Clear-sky Fit Coefficient b to Global UVB Irradiance (UVBb)(coef_clearsky_guvb_b)
  • Date (YYMMDD LST) for which the Coefficients are Applicable(coef_date)
  • Difference: gswfluxdn_measured - gswfluxdn_clearskyfit (gswfcg)(gswfluxdn_cloudeffect)
  • Measured Downwelling Global Shortwave Irradiance (gsw)(gswfluxdn_measured)
  • Clear-sky Fit Coefficient a to Global minus Summed Shortwave Irradiance
    Difference (SCORa)(coef_clearsky_dsw_a)
  • Clear-sky Fit Coefficient b to Summed Shortwave Irradiance (CSWb)(coef_clearsky_ssw_b)
  • Ratio of Measured Downwelling Diffuse Shortwave Irradiance to Measured
    Downwelling Global Shortwave Irradiance (difr)(difratiodn_measured)
  • Clear-sky Fit Estimated Surface Albedo from Shortwave Irradiance Measurements
    (calb)(albedosw_clearskyfit)
  • Measured Surface Albedo from Shortwave Irradiance Measurements (alb)(albedosw_measured)
  • Difference: difswfluxdn_measured - difswfluxdn_clearskyfit (diffcg)(difswfluxdn_cloudeffect)
  • Clear-sky Fit Coefficient a to Diffuse Irradiance to Total Irradiance Ratio
    (DFRa)(coef_clearsky_difratio_a)
  • Clear-sky Fit Estimated Downwelling Global UVB Irradiance (cguvb)(guvbdn_clearskyfit)
  • Clear-sky Fit Estimated Downwelling Diffuse Field Shortwave Irradiance (cdif)(difswfluxdn_clearskyfit)
  • Time Offset from base_time_LST(time_offset_LST)
  • Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cgsw)(gswfluxdn_clearskyfit)
  • Time offset of tweaks from base_time(time_offset)
  • east longitude for all the input platforms.(lon)
  • Clear-sky Fit Estimated Downwelling Summed Shortwave Irradiance
    (dirfluxdn_clearskyfit+diffluxdn_clearskyfit) (cssw)(sswfluxdn_clearskyfit)
  • Arithmetic Average Cosine of the Solar Zenith Angle Z (CosZ)(solar_cos_z)
  • Clear-sky Offset Coefficient c for Global minus Summed Shortwave Irradiance
    Difference (SCORc)(coef_clearsky_dsw_c)
  • Clear-sky Fit Coefficient a to Global Shortwave Irradiance (CSWa)(coef_clearsky_gsw_a)
  • Clear-sky Fit Coefficient b to Global Shortwave Irradiance (CSWb)(coef_clearsky_gsw_b)
  • Beginning Time of File (LST)(base_time_LST)
  • Clear-sky Fit Coefficient b to Global minus Summed Shortwave Irradiance
    Difference (SCORb)(coef_clearsky_dsw_b)
  • Difference: sswfluxdn_measured - sswfluxdn_clearskyfit (sswfcg)(sswfluxdn_cloudeffect)
  • Ratio of Clear-sky Fit Estimated Downwelling Diffuse Shortwave Irradiance to
    Clear-sky Fit Estimated Downwelling Global Shortwave Irradiance (cdifr)(difratiodn_clearskyfit)
  • Measured Downwelling Diffuse Shortwave Irradiance (dif)(difswfluxdn_measured)
  • Time offset from base_time(base_time)
  • Arithmetic Average Distance from the Earth to the Sun (au)(sun_earth_distance)
  • Site Identification(site)
  • 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 Detection Flag (clrf)(flag_clearsky_detection)
  • Clear-sky Fit Coefficient a to Albedo (Alba)(coef_clearsky_albedo_a)
  • Clear-sky Fit Coefficient b to Albedo (Albb)(coef_clearsky_albedo_b)
  • north latitude for all the input platforms.(lat)

twpskyrad20sC1.a1:
  • Instantaneous PIR2 dome thermistor(pir2_dome_therm)
  • Instantaneous Uncorrected Downwelling Ultraviolet Irradiance, UV Biometer(inst_down_uvb_irradiance)
  • north latitude for all the input platforms.(lat)
  • Instantaneous PIR2 uncorrected irradiance(pir2_uncorr_irradiance)
  • Time offset of tweaks from base_time(time_offset)
  • Instantaneous UVB uncorrected irradiance(uvb_uncorr_irradiance)
  • altitude above sea levelaltunits(alt)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_dome_resist)
  • Instantaneous PIR1 uncorrected irradiance(pir1_uncorr_irradiance)
  • Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_case_resist)
  • Instantaneous UVB temperature(uvb_temp)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Unshaded
    Pyrgeometer(inst_down_long_unshaded_case_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer2(inst_down_long_hemisp_shaded2_tp)
  • Instantaneous PIR1 dome thermistor(pir1_dome_therm)
  • Instantaneous PIR2 case thermistor(pir2_case_therm)
  • Time offset from base_time(base_time)
  • Instantaneous Downwelling Ultraviolet Biometer Temperature(inst_down_uvb_temp)
  • east longitude for all the input platforms.(lon)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer1(inst_down_long_hemisp_shaded1_tp)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Unshaded
    Pyrgeometer(inst_down_long_unshaded_dome_resist)
  • GPS raw data filename(filename)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_case_resist)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_case_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Unshaded Pyrgeometer(inst_down_long_hemisp_unshaded_tp)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer(inst_down_long_shaded_dome_resist)
  • Instantaneous PIR1 case thermistor(pir1_case_therm)

twpskyrad60sC1.b1:
  • PIR1 unshaded minimum(pir1_min)
  • Downwelling Ultra-Violet Irradiance, UV Biometer(down_uvb)
  • NIP maximum(nip_max)
  • Bit data. See details.(bit_data)
  • PSP shaded maximum(psps_max)
  • Time offset of tweaks from base_time(time_offset)
  • east longitude for all the input platforms.(lon)
  • External voltage(external_voltage)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min)
  • IRT1 maximum(irt1_max)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_unshaded_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Minima(down_long_hemisp_unshaded_min)
  • NIP standard deviation(nip_sd)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max)
  • PIR shaded minimum(pirs_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • IRT1 minimum(irt1_min)
  • PIR shaded standard deviation(pirs_sd)
  • PIR shaded mean(pirs_mean)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Maxima(down_long_hemisp_unshaded_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • NIP minimum(nip_min)
  • PSP shaded standard deviation(psps_sd)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • UVB standard deviation(uvb_sd)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Standard
    Deviation(down_long_hemisp_shaded2_std)
  • PSP1 unshaded mean(psp1_mean)
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • IRT1 mean(irt1_mean)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • altitude above sea levelaltunits(alt)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)
  • PIR1 unshaded maximum(pir1_max)
  • Internal voltage(internal_voltage)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Maxima(down_long_hemisp_shaded2_max)
  • Downwelling Ultra-Violet Irradiance, UV Biometer, Maxima(down_uvb_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • PIR shaded maximum(pirs_max)
  • PSP shaded mean(psps_mean)
  • UVB minimum(uvb_min)
  • Downwelling Ultra-Violet Irradiance, UV Biometer, Standard Deviation(down_uvb_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • PIR1 unshaded mean(pir1_mean)
  • Time offset from base_time(base_time)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer(down_long_hemisp_unshaded)
  • PSP1 unshaded standard deviation(psp1_sd)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Internal Logger Temperature(logger_temp)
  • UVB maximum(uvb_max)
  • PIR1 unshaded standard deviation(pir1_sd)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • PSP shaded minimum(psps_min)
  • PSP1 unshaded maximum(psp1_max)
  • GPS raw data filename(filename)
  • IRT1 standard deviation(irt1_sd)
  • NIP mean(nip_mean)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Minima(down_long_hemisp_shaded2_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard
    Deviation(down_long_hemisp_shaded1_std)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Downwelling Ultra-Violet Irradiance, UV Biometer, Minima(down_uvb_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • north latitude for all the input platforms.(lat)
  • UVB mean(uvb_mean)
  • PSP1 unshaded minimum(psp1_min)

twpskyradC1.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)


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DQRID : D050808.3
Start DateStart TimeEnd DateEnd Time
08/05/2005003008/05/20050330
Subject:
TWP/SMET/C3 - Data not representative
DataStreams:twpsmet60sC3.b1
Description:
Tower was lowered for radiometer change and characterization.  Wind, temp and RH data not 
representative of local conditions.
Measurements:twpsmet60sC3.b1:
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #1 speed minimum(wind1_spd_min)
  • Wind #2 speed maximum(wind2_spd_max)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #2 speed minimum(wind2_spd_min)
  • Max Temperature at lowest Model Level- 1 hr(temp_max)
  • Vapor pressure mean(vappress_mean)
  • Vapor pressure standard deviation(vappress_sd)
  • Relative humidity mean(relh_mean)
  • Relative humidity maximum(relh_max)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • Wind #2 direction vector average(wind2_dir_vec_avg)
  • Relative humidity minimum(relh_min)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Min Temperature at lowest Model Level- 1 hr(temp_min)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #2 speed standard deviation(wind2_spd_sd)
  • Wind #2 direction standard deviation(wind2_dir_sd)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Temperature standard deviation(temp_sd)


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DQRID : D050815.1
Start DateStart TimeEnd DateEnd Time
08/11/2005164808/16/20052230
Subject:
TWP/GNDRAD/C2 - IRT power supply failed
DataStreams:twpgndradC2.00, twpgndrad60sC2.b1
Description:
The IRT output dropped to its minimum output of 223 K (0 volts).  It was determined the 24 
V DC converter had failed.  The converter was replaced on 16 August and the instrument 
began reporting normally again.  The IRT data are unusable during the five day period when 
the DC converter was faulty.

The GNDRAD (down-looking) IRT is used primarily for surface temperature.  The PIR can be 
used for this purpose by inverting the IR flux equation, Flux = sigma*temperature^4 where 
sigma = 5.67x10-8 W/m^2K^4.  But, unlike the IRT, the PIR measurement is strongly 
effected by the air temperature in addition to the surface temperature.  At night, when the air 
temperature approaches the surface temperature, the PIR provides a good estimate of the 
surface temperature.  During the day, however, the PIR tends to underestimate the ground 
temperature,  particularly on sunny days.  The magnitude of the underestimate can be 
estimated by evaluating periods when both instruments are operating but is typically on the 
order of 5-10C.
Measurements:twpgndradC2.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

twpgndrad60sC2.b1:
  • IRT1 maximum(irt1_max)
  • IRT1 mean(irt1_mean)
  • IRT1 standard deviation(irt1_sd)
  • IRT1 minimum(irt1_min)


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DQRID : D050831.4
Start DateStart TimeEnd DateEnd Time
08/05/2005003008/05/20050330
Subject:
TWP/SMET/C3 - Towrr lowered for sensor comparisons, data not representative
DataStreams:twpsmet60sC3.b1
Description:
The tower was lowered for radiometer change and comparisons.  During the time period the 
data listed was not representative.
Measurements:twpsmet60sC3.b1:
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #1 speed minimum(wind1_spd_min)
  • Wind #2 speed maximum(wind2_spd_max)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #2 speed minimum(wind2_spd_min)
  • Max Temperature at lowest Model Level- 1 hr(temp_max)
  • Vapor pressure mean(vappress_mean)
  • Vapor pressure standard deviation(vappress_sd)
  • Relative humidity mean(relh_mean)
  • Relative humidity maximum(relh_max)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • Wind #2 direction vector average(wind2_dir_vec_avg)
  • Relative humidity minimum(relh_min)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Min Temperature at lowest Model Level- 1 hr(temp_min)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #2 speed standard deviation(wind2_spd_sd)
  • Wind #2 direction standard deviation(wind2_dir_sd)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Temperature standard deviation(temp_sd)


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DQRID : D050913.3
Start DateStart TimeEnd DateEnd Time
07/03/2005235007/04/20050024
07/10/2005234007/11/20050021
07/19/2005233207/20/20050016
Subject:
TWP/SONDE/C2 - Bad RH sensor
DataStreams:twpsondewnpnC2.b1
Description:
It appears that the RH sensor heating circuit failed during this sounding.  The RH 
oscillates rapidly between low (~0 %RH) and not so low (ambient %RH) and the oscillation seems 
to stop when the temperature is below -50 degC.  According to Vaisala these are symptoms 
of failure in the ASIC (application specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)


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DQRID : D050919.4
Start DateStart TimeEnd DateEnd Time
08/05/2005003008/05/20050200
08/09/2005000008/09/20050200
Subject:
TWP/GNDRAD/C3 - Tower inverted for instrument testing and replacement
DataStreams:twpgndrad60sC3.b1
Description:
The tower at Darwin was brought down to test and replace the Gndrad PIR on 8/5/2005 and 
the PSP on 8/9/2005
Measurements:twpgndrad60sC3.b1:
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(up_short_hemisp_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(up_short_hemisp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(up_short_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)


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DQRID : D050920.4
Start DateStart TimeEnd DateEnd Time
09/21/2005162509/21/20051815
Subject:
TWP/SMET/C2 - Instrument maintenance
DataStreams:twpsmet60sC2.b1
Description:
Instrument calibration and testing were taking place for brief periods.
Measurements:twpsmet60sC2.b1:
  • Relative humidity mean(relh_mean)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Max Temperature at lowest Model Level- 1 hr(temp_max)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 direction standard deviation(wind2_dir_sd)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Vapor pressure mean(vappress_mean)
  • Wind #2 speed minimum(wind2_spd_min)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • Wind #1 speed minimum(wind1_spd_min)
  • Wind #2 speed maximum(wind2_spd_max)
  • Temperature standard deviation(temp_sd)
  • Min Temperature at lowest Model Level- 1 hr(temp_min)
  • Wind #2 speed standard deviation(wind2_spd_sd)
  • Relative humidity minimum(relh_min)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Vapor pressure standard deviation(vappress_sd)
  • Relative humidity maximum(relh_max)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #2 direction vector average(wind2_dir_vec_avg)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)


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DQRID : D050921.2
Start DateStart TimeEnd DateEnd Time
09/19/2005080909/19/20051902
Subject:
TWP/SMET/C2 - ORG data incorrect
DataStreams:twpsmet60sC2.b1
Description:
Data from the ORG was incorrect due to heavy condensation on the lens.
Measurements:twpsmet60sC2.b1:
  • Precipitation maximum(precip_max)
  • Precipitation mean(precip_mean)
  • precipitation minimum(precip_min)
  • Precipitation standard deviation(precip_sd)


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DQRID : D050926.6
Start DateStart TimeEnd DateEnd Time
09/17/2005015209/23/20050115
Subject:
TWP/GNDRAD/C2 - Gndrad inverted for radiometer
DataStreams:twpgndrad60sC2.b1
Description:
Gndrad instruments PIR and PSP inverted for replacement instrument
installation and comparison
Measurements:twpgndrad60sC2.b1:
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp)
  • PSP1 unshaded maximum(psp1_max)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • PIR1 unshaded minimum(pir1_min)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(up_short_hemisp_max)
  • PIR1 unshaded mean(pir1_mean)
  • PSP1 unshaded standard deviation(psp1_sd)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • PIR1 unshaded standard deviation(pir1_sd)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)
  • PIR1 unshaded maximum(pir1_max)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(up_short_hemisp_std)
  • PSP1 unshaded minimum(psp1_min)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(up_short_hemisp_min)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • PSP1 unshaded mean(psp1_mean)


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DQRID : D051005.6
Start DateStart TimeEnd DateEnd Time
09/19/2005020009/19/20050330
Subject:
TWP/SMET/C2 - Tower down for calibration activities
DataStreams:twpsmet60sC2.b1
Description:
Tower lowered, wind vanes spun at different frequencies, and ORG tested with electronic 
rain.
Measurements:twpsmet60sC2.b1:
  • Relative humidity mean(relh_mean)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Max Temperature at lowest Model Level- 1 hr(temp_max)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 direction standard deviation(wind2_dir_sd)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • precipitation minimum(precip_min)
  • Vapor pressure mean(vappress_mean)
  • Wind #2 speed minimum(wind2_spd_min)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • Wind #1 speed minimum(wind1_spd_min)
  • Wind #2 speed maximum(wind2_spd_max)
  • Temperature standard deviation(temp_sd)
  • Min Temperature at lowest Model Level- 1 hr(temp_min)
  • Relative humidity minimum(relh_min)
  • Wind #2 speed standard deviation(wind2_spd_sd)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Vapor pressure standard deviation(vappress_sd)
  • Precipitation maximum(precip_max)
  • Relative humidity maximum(relh_max)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #2 direction vector average(wind2_dir_vec_avg)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Precipitation mean(precip_mean)
  • Precipitation standard deviation(precip_sd)


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DQRID : D051114.3
Start DateStart TimeEnd DateEnd Time
11/14/2005045312/02/20050000
Subject:
TWP/SKYRAD/C3 - tracker inoperative
DataStreams:twpskyradC3.00, twpskyrad20sC3.a0, twpskyrad60sC3.b1
Description:
A lightning strike at Darwin removed the tracker from service.  Instruments installed on 
the tracker were rendered either inoperative or were not shaded during this time period.  
The longwave hemispheric instruments PIR1 and PIR2 appear to have been unaffected.  They 
are not suseptable to incorrect tracker operation.  The downwelling hemispheric shortwave 
PSP instrument mounted on Skyrad will not be affected by incorrect tracker operation.
Measurements:twpskyradC3.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

twpskyrad60sC3.b1:
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)

twpskyrad20sC3.a0:
  • Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile
    Voltage(inst_direct_normal)
  • Instantaneous Uncorrected Downwelling Shortwave Diffuse, Shaded Pyranometer
    Thermopile Voltage(inst_diffuse)


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DQRID : D051115.1
Start DateStart TimeEnd DateEnd Time
11/14/2005045311/15/20052215
Subject:
TWP/SMET/C3 - Upper wind sensor failure
DataStreams:twpsmet60sC3.b1
Description:
A lightning strike destroyed the upper (#1) wind sensor.
Measurements:twpsmet60sC3.b1:
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #1 speed minimum(wind1_spd_min)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #1 direction standard deviation(wind1_dir_sd)


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DQRID : D051117.2
Start DateStart TimeEnd DateEnd Time
11/14/2005045311/15/20050050
Subject:
TWP/SMET/C3 - RH Values Artificially High
DataStreams:twpsmet60sC3.b1
Description:
Lightning strike caused RH readings to be higher than reasonable (130%).
Measurements:twpsmet60sC3.b1:
  • Vapor pressure standard deviation(vappress_sd)
  • Relative humidity mean(relh_mean)
  • Relative humidity maximum(relh_max)
  • Vapor pressure mean(vappress_mean)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • Relative humidity minimum(relh_min)


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DQRID : D051117.3
Start DateStart TimeEnd DateEnd Time
11/14/2005045311/23/20050000
Subject:
TWP/SMET/C3 - Instrument failure
DataStreams:twpsmet60sC3.b1
Description:
A lightning strike caused a failure in the ORG.  Rainfall was being continually recorded.
Measurements:twpsmet60sC3.b1:
  • Precipitation mean(precip_mean)
  • Precipitation maximum(precip_max)
  • Precipitation standard deviation(precip_sd)
  • precipitation minimum(precip_min)


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DQRID : D051119.1
Start DateStart TimeEnd DateEnd Time
11/13/2005010001/10/20060145
Subject:
TWP/SKYRAD/C1  - IRT failure
DataStreams:twpskyrad60sC1.b1
Description:
A moisture related fault was found in the IRT cable after a day of very heavy rain. The 
cable was replaced but the internal power supply was apparently damaged. The instrument was 
replaced with a spare IRT.
Measurements:twpskyrad60sC1.b1:
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)


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DQRID : D051122.2
Start DateStart TimeEnd DateEnd Time
11/19/2005233411/20/20050153
11/21/2005233211/22/20050140
Subject:
TWP/SONDE/C2 - Broken temperature sensor
DataStreams:twpsondewnpnC2.b1
Description:
The temperature sensor on this radiosonde broke after launch.  All the temperature-related 
data are incorrect.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Dry-Bulb Temperature(tdry)
  • Surface dew point temperature(dp)


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DQRID : D051123.2
Start DateStart TimeEnd DateEnd Time
11/11/2005223011/17/20050030
Subject:
TWP/GNDRAD/C1 - Gndrad inverted for comparison of radiometers
DataStreams:twpgndrad60sC1.b1
Description:
Radiometers GNDRAD PIR and PSP inverted for radiometer comparison
Measurements:twpgndrad60sC1.b1:
  • NET standard deviation(net_sd)
  • Net Radiation, Maxima(net_max)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(up_short_hemisp_max)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Minima(up_long_hemisp_min)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(up_short_hemisp_std)
  • PIR1 unshaded mean(pir1_mean)
  • PSP1 unshaded maximum(psp1_max)
  • PIR1 unshaded maximum(pir1_max)
  • Net Radiation, Minima(net_min)
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(up_short_hemisp_min)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Standard Deviation(up_long_hemisp_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer,
    Maxima(up_long_hemisp_max)
  • Upwelling (10 meter) Shortwave Hemispheric Irradiance, Ventilated Pyranometer(up_short_hemisp)
  • PSP1 unshaded mean(psp1_mean)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • PIR1 unshaded standard deviation(pir1_sd)
  • PSP1 unshaded minimum(psp1_min)
  • PSP1 unshaded standard deviation(psp1_sd)
  • Net Radiation, Standard Deviation(net_std)
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)
  • Net Radiation(net)
  • PIR1 unshaded minimum(pir1_min)
  • NET mean(net_mean)


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DQRID : D051202.3
Start DateStart TimeEnd DateEnd Time
05/21/2004000009/09/20052012
Subject:
TWP/SKYRAD/C3 - Reprocess: Incorrect datalogger program affecting PIR1 and PIR2 
downwelling longwave
DataStreams:twpskyrad60sC3.b1
Description:
The excitation delays using in measuring the PIR1 case thermistor commonly named "Case1" 
and the PIR2 dome thermistor called "Dome2" were discovered to have been incorrectly set 
to 0 in the Skyrad datalogger program when the new CR23X based Skyrad loggers were 
installed.  The result of no delay in these measurements results in an error in the measured 
resistance of the thermistors, Case1 and Dome2, and thus the calculated PIR1 and PIR2 
irradiances.  The errors are inversely proportial to temperature.

Users can apply temperature dependent irradiance corrections as shown in the table below.  
Recall that the reported uncertainty of PIRs is typically +-.25% to +-.5% or 1 to 2 
W/m2. The error corrections become the same order of magnitude or larger than the instrument 
uncertainties at or below 260K or 9F. Irradiance Correction Table for Skyrad (TWP and 
NSA) DIR1 and DIR2 Irradiance

		DIR1	DIR1	DIR2	DIR2
	T[F]	Tcase[K]	Correction[W/m2]	Tdome[K]       
		Correction[W/m2]
	109.4	316.13	0.00	316.13	0.00
	100.5	311.20	-0.15	311.20	0.12
	93.2	307.14	-0.12	307.14	0.10
	87.0	303.70	-0.10	303.70	0.08
	81.6	300.70	-0.17	300.70	0.14
	77.0	298.15	-0.22	298.15	0.18
	59.4	288.35	-0.34	288.35	0.27
	47.4	281.72	-0.23	281.72	0.18
	38.5	276.74	-0.42	276.74	0.34
	31.3	272.77	-0.48	272.77	0.38
	25.4	269.48	-0.61	269.48	0.49
	20.3	266.67	-0.67	266.67	0.54
	16.0	264.25	-0.82	264.25	0.66
	12.1	262.11	-0.98	262.11	0.79
	8.7	260.19	-0.97	260.19	0.78
	5.6	258.46	-1.07	258.46	0.86
	2.7	256.89	-1.17	256.89	0.94
	0.1	255.44	-1.33	255.44	1.07
	-2.3	254.11	-1.41	254.11	1.13
	-4.5	252.87	-1.43	252.87	1.15
	-6.6	251.71	-1.52	251.71	1.22
	-8.5	250.63	-1.63	250.63	1.31
	-10.4	249.62	-1.73	249.62	1.39
	-12.2	248.58	-1.79	248.58	1.44
	-15.4	246.82	-1.93	246.82	1.55
	-18.3	245.23	-2.05	245.23	1.65
	-20.9	243.78	-2.22	243.78	1.78
	-23.3	242.44	-2.36	242.44	1.89
	-25.5	241.21	-2.58	241.21	2.07
	-27.5	240.07	-2.65	240.07	2.13
	-29.5	239.01	-2.75	239.01	2.21
	-31.3	238.00	-3.02	238.00	2.42
Measurements:twpskyrad60sC3.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Minima(down_long_hemisp_shaded2_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Standard
    Deviation(down_long_hemisp_shaded2_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard
    Deviation(down_long_hemisp_shaded1_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Maxima(down_long_hemisp_shaded2_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)


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DQRID : D051202.5
Start DateStart TimeEnd DateEnd Time
08/02/2004020009/09/20052022
Subject:
TWP/SKYRAD/C1 - Reprocess: Incorrect datalogger program affecting PIR1 and PIR2 
downwelling longwave
DataStreams:twpskyrad20sC1.a0, twpskyrad60sC1.b1
Description:
The excitation delays using in measuring the PIR1 case thermistor commonly named "Case1" 
and the PIR2 dome thermistor called "Dome2" were discovered to have been incorrectly set 
to 0 in the Skyrad datalogger program when the new CR23X based Skyrad loggers were 
installed.  The result of no delay in these measurements results in an error in the measured 
resistance of the thermistors, Case1 and Dome2, and thus the calculated PIR1 and PIR2 
irradiances.  The absolute value of the errors are inversely proportial to temperature.

Users can apply temperature dependent irradiance corrections shown in the table below.  
Recall that the reported uncertainty of PIRs is typically +-.25% to +-.5% or 1 to 2 W/m2. 
The error corrections become the same order of magnitude or larger than the instrument 
uncertainties at or below 260K or 9F. 

Irradiance Correction Table for Skyrad (TWP and NSA) DIR1 and DIR2 Irradiance

		DIR1	DIR1	DIR2	DIR2
	T[F]	Tcase[K]	Correction[W/m2]	Tdome[K]       
		Correction[W/m2]
	109.4	316.13	0.00	316.13	0.00
	100.5	311.20	-0.15	311.20	0.12
	93.2	307.14	-0.12	307.14	0.10
	87.0	303.70	-0.10	303.70	0.08
	81.6	300.70	-0.17	300.70	0.14
	77.0	298.15	-0.22	298.15	0.18
	59.4	288.35	-0.34	288.35	0.27
	47.4	281.72	-0.23	281.72	0.18
	38.5	276.74	-0.42	276.74	0.34
	31.3	272.77	-0.48	272.77	0.38
	25.4	269.48	-0.61	269.48	0.49
	20.3	266.67	-0.67	266.67	0.54
	16.0	264.25	-0.82	264.25	0.66
	12.1	262.11	-0.98	262.11	0.79
	8.7	260.19	-0.97	260.19	0.78
	5.6	258.46	-1.07	258.46	0.86
	2.7	256.89	-1.17	256.89	0.94
	0.1	255.44	-1.33	255.44	1.07
	-2.3	254.11	-1.41	254.11	1.13
	-4.5	252.87	-1.43	252.87	1.15
	-6.6	251.71	-1.52	251.71	1.22
	-8.5	250.63	-1.63	250.63	1.31
	-10.4	249.62	-1.73	249.62	1.39
	-12.2	248.58	-1.79	248.58	1.44
	-15.4	246.82	-1.93	246.82	1.55
	-18.3	245.23	-2.05	245.23	1.65
	-20.9	243.78	-2.22	243.78	1.78
	-23.3	242.44	-2.36	242.44	1.89
	-25.5	241.21	-2.58	241.21	2.07
	-27.5	240.07	-2.65	240.07	2.13
	-29.5	239.01	-2.75	239.01	2.21
	-31.3	238.00	-3.02	238.00	2.42
Measurements:twpskyrad20sC1.a0:
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer2(inst_down_long_hemisp_shaded2_tp)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_case_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer1(inst_down_long_hemisp_shaded1_tp)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_case_resist)

twpskyrad60sC1.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Standard
    Deviation(down_long_hemisp_shaded2_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard
    Deviation(down_long_hemisp_shaded1_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Maxima(down_long_hemisp_shaded2_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Minima(down_long_hemisp_shaded2_min)


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DQRID : D051202.6
Start DateStart TimeEnd DateEnd Time
07/05/2004220009/09/20052058
Subject:
TWP/SKYRAD/C2 - Reprocess: Incorrect datalogger program affecting PIR1 and PIR2 
downwelling longwave
DataStreams:twpskyrad20sC2.a0, twpskyrad60sC2.b1
Description:
The excitation delays using in measuring the PIR1 case thermistor commonly named "Case1" 
and the PIR2 dome thermistor called "Dome2" were discovered to have been incorrectly set 
to 0 in the Skyrad datalogger program when the new CR23X based Skyrad loggers were 
installed.  The result of no delay in these measurements results in an error in the measured 
resistance of the thermistors, Case1 and Dome2, and thus the calculated PIR1 and PIR2 
irradiances.  The absolute value of the errors are inversely proportial to temperature.

Users can apply the temperature dependent irradiance corrections shown in the table below. 
 Recall that the reported uncertainty of PIRs is typically +-.25% to +-.5% or 1 to 2 
W/m2. The error corrections become the same order of magnitude or larger than the instrument 
uncertainties at or below 260K or 9F.
 
Irradiance Correction Table for Skyrad (TWP and NSA) DIR1 and DIR2 Irradiance
		DIR1	DIR1	DIR2	DIR2
	T[F]	Tcase[K]	Correction[W/m2]	Tdome[K]       
		Correction[W/m2]
	109.4	316.13	0.00	316.13	0.00
	100.5	311.20	-0.15	311.20	0.12
	93.2	307.14	-0.12	307.14	0.10
	87.0	303.70	-0.10	303.70	0.08
	81.6	300.70	-0.17	300.70	0.14
	77.0	298.15	-0.22	298.15	0.18
	59.4	288.35	-0.34	288.35	0.27
	47.4	281.72	-0.23	281.72	0.18
	38.5	276.74	-0.42	276.74	0.34
	31.3	272.77	-0.48	272.77	0.38
	25.4	269.48	-0.61	269.48	0.49
	20.3	266.67	-0.67	266.67	0.54
	16.0	264.25	-0.82	264.25	0.66
	12.1	262.11	-0.98	262.11	0.79
	8.7	260.19	-0.97	260.19	0.78
	5.6	258.46	-1.07	258.46	0.86
	2.7	256.89	-1.17	256.89	0.94
	0.1	255.44	-1.33	255.44	1.07
	-2.3	254.11	-1.41	254.11	1.13
	-4.5	252.87	-1.43	252.87	1.15
	-6.6	251.71	-1.52	251.71	1.22
	-8.5	250.63	-1.63	250.63	1.31
	-10.4	249.62	-1.73	249.62	1.39
	-12.2	248.58	-1.79	248.58	1.44
	-15.4	246.82	-1.93	246.82	1.55
	-18.3	245.23	-2.05	245.23	1.65
	-20.9	243.78	-2.22	243.78	1.78
	-23.3	242.44	-2.36	242.44	1.89
	-25.5	241.21	-2.58	241.21	2.07
	-27.5	240.07	-2.65	240.07	2.13
	-29.5	239.01	-2.75	239.01	2.21
	-31.3	238.00	-3.02	238.00	2.42
Measurements:twpskyrad60sC2.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Minima(down_long_hemisp_shaded2_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Standard
    Deviation(down_long_hemisp_shaded2_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard
    Deviation(down_long_hemisp_shaded1_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Maxima(down_long_hemisp_shaded2_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min)

twpskyrad20sC2.a0:
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer2(inst_down_long_hemisp_shaded2_tp)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer1(inst_down_long_hemisp_shaded1_tp)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_case_resist)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_case_resist)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_dome_resist)


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DQRID : D051206.5
Start DateStart TimeEnd DateEnd Time
11/21/2005150012/05/20050100
Subject:
TWP/GNDRAD/C3 - IRT malfunction
DataStreams:twpgndrad60sC3.b1
Description:
The internal IRT power supply failed (probably due to a lightning strike on 11/14) and was 
drawing excessive current on the data logger's DC system. The problem was corrected by 
replacing the instrument with a spare.
Measurements:twpgndrad60sC3.b1:
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)


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DQRID : D051219.2
Start DateStart TimeEnd DateEnd Time
12/07/2005115312/07/20051323
Subject:
TWP/SONDE/C2  - Broken temperature sensor
DataStreams:twpsondewnpnC2.b1
Description:
The temperature sensor on this radiosonde broke after launch.  All the temperature-related 
data are incorrect.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Dry-Bulb Temperature(tdry)
  • Surface dew point temperature(dp)


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DQRID : D060110.3
Start DateStart TimeEnd DateEnd Time
11/13/2005231403/07/20060257
Subject:
TWP/SKYRAD/C3 - IRT damaged
DataStreams:twpskyrad20sC3.a0, twpskyrad60sC3.b1
Description:
The analog output of the IRT was damaged by a lightning strike. The problem was corrected 
by replacing the instrument with a spare. The damaged IRT was returned to the vendor for 
repair.
Measurements:twpskyrad60sC3.b1:
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)

twpskyrad20sC3.a0:
  • Instantaneous Sky/Cloud Infrared(inst_sky_ir_signal)


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DQRID : D060111.1
Start DateStart TimeEnd DateEnd Time
12/20/2005233001/02/20062300
Subject:
TWP/GNDRAD/C3 - IRT power
DataStreams:twpgndrad60sC3.b1
Description:
The IRT failed to report after a planned power outage to add lightning protection modules 
to the AC power wiring. The problem was corrected when a loose power connection to the 
logger was found, rectified, and power restored to the logger.
Measurements:twpgndrad60sC3.b1:
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)


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DQRID : D060217.1
Start DateStart TimeEnd DateEnd Time
02/16/2006033002/16/20060505
Subject:
TWP/SKYRAD/C3 - Tracker stopped
DataStreams:twpskyrad60sC3.b1
Description:
Solar Tracker stopped and had to be repowered
Measurements:twpskyrad60sC3.b1:
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Maxima(down_long_hemisp_unshaded_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard
    Deviation(down_long_hemisp_shaded1_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_unshaded_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Maxima(down_long_hemisp_shaded2_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer(down_long_hemisp_unshaded)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Minima(down_long_hemisp_shaded2_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Standard
    Deviation(down_long_hemisp_shaded2_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min)
  • Downwelling Longwave Hemispheric Irradiance, Unshaded Pyrgeometer, Minima(down_long_hemisp_unshaded_min)


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DQRID : D060223.7
Start DateStart TimeEnd DateEnd Time
02/17/2006000003/10/20060411
Subject:
TWP/SKYRAD/C3 - Solar Tracker locking at solar noon
DataStreams:twpskyradC3.00, twpskyrad20sC3.a0, twpskyrad20sC3.a1, twpskyrad60sC3.b1
Description:
The Scitech solar tracker from SGP that was installed on 2005-12-01 after the previous 
tracker was damaged by lightning on 2005-11-14 has been hanging up every day at solar noon.  
In Feb, the sun moved from south to north and the Scitech tracker does not seem to be 
able to deal with this. During this period the operators power cycled the tracker between 
05:00Z and 10:00Z almost every day and data from around solar noon (03:30Z) until the 
power cycle are unusable for the measurements that use the tracker (NIP, B&W Diffuse, and 
shaded PIRs).
The problem was corrected when the Scitech tracker was replaced by a Brusag
tracker on 2006-03-10.
Measurements:twpskyradC3.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

twpskyrad60sC3.b1:
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Maxima(down_short_diffuse_hemisp_max)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer(down_short_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Maxima(down_long_hemisp_shaded_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer(down_long_hemisp_shaded)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Minima(down_short_hemisp_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Standard
    Deviation(down_short_hemisp_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Minima(down_long_hemisp_shaded2_min)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Standard
    Deviation(down_long_hemisp_shaded2_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Standard
    Deviation(down_long_hemisp_shaded_std)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Minima(down_long_hemisp_shaded1_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Minima(down_short_diffuse_hemisp_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Standard
    Deviation(down_long_hemisp_shaded1_std)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer,
    Standard Deviation(down_short_diffuse_hemisp_std)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2, Maxima(down_long_hemisp_shaded2_max)
  • Downwelling Shortwave Diffuse Hemispheric Irradiance, Ventilated Pyranometer(down_short_diffuse_hemisp)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer, Minima(down_long_hemisp_shaded_min)
  • Downwelling Shortwave Hemispheric Irradiance, Ventilated Pyrgeometer, Maxima(down_short_hemisp_max)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1, Maxima(down_long_hemisp_shaded1_max)

twpskyrad20sC3.a0:
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer1(inst_down_long_hemisp_shaded1_tp)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_case_resist)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_case_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer2(inst_down_long_hemisp_shaded2_tp)

twpskyrad20sC3.a1:
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_case_resist)
  • Instantaneous Downwelling Pyrgeometer Dome Thermistor Resistance, Shaded
    Pyrgeometer1(inst_down_long_shaded1_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer2(inst_down_long_hemisp_shaded2_tp)
  • 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
    Pyrgeometer2(inst_down_long_shaded2_dome_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile Voltage, Shaded Pyrgeometer(inst_down_long_hemisp_shaded_tp)
  • Instantaneous Downwelling Pyrgeometer Case Thermistor Resistance, Shaded
    Pyrgeometer2(inst_down_long_shaded2_case_resist)
  • Instantaneous Downwelling Pyrgeometer Thermopile, Shaded Pyrgeometer1(inst_down_long_hemisp_shaded1_tp)


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DQRID : D060308.1
Start DateStart TimeEnd DateEnd Time
01/15/2006114401/15/20061328
01/19/2006131801/19/20061320
01/22/2006114901/22/20061315
02/14/2006005502/14/20060207
02/21/2006023202/21/20060359
Subject:
TWP/SONDE/C2  - Broken temperature sensor
DataStreams:twpsondewnpnC2.b1
Description:
The temperature sensor on this radiosonde broke after launch.  All the temperature-related 
data are incorrect.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Dry-Bulb Temperature(tdry)
  • Surface dew point temperature(dp)


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DQRID : D060403.2
Start DateStart TimeEnd DateEnd Time
03/27/2006004303/27/20060208
Subject:
TWP/SONDE/C2  - Broken temperature sensor
DataStreams:twpsondewnpnC2.b1
Description:
The temperature sensor on this radiosonde broke after launch.  All the temperature-related 
data are incorrect.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Dry-Bulb Temperature(tdry)
  • Surface dew point temperature(dp)


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DQRID : D060418.1
Start DateStart TimeEnd DateEnd Time
04/10/2006024704/10/20060314
Subject:
TWP/SONDE/C2  - Bad RH in lower 8km
DataStreams:twpsondewnpnC2.b1
Description:
It appears that the RH sensor heating circuit failed during this sounding.  The RH 
oscillates rapidly between low (~0 %RH) and not so low (ambient %RH) and the oscillation seems 
to stop when the temperature is below ~35 degC.  According to Vaisala these are symptoms 
of failure in the ASIC (application specific integrated circuit) that controls the heating.
Measurements:twpsondewnpnC2.b1:
  • Relative humidity scaled, by total column amount from MWR(rh)
  • Surface dew point temperature(dp)


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DQRID : D060426.8
Start DateStart TimeEnd DateEnd Time
12/01/2005000008/24/20062359
Subject:
TWP/SMET/C3 - ORG data noisy due to degraded ground
DataStreams:twpsmet60sC3.b1
Description:
SMET Rain Data began to be noisy during December 2005 and the problem slowly became worse 
over time so that in February 2006 the ORG was reporting with a constant background value 
of around 0.10 mm/hr rain rate.  ORG voltage showed a near constant value above the 85mV 
threshold.  The ground for the ORG had become degraded and was lost due to corrosion.
Measurements:twpsmet60sC3.b1:
  • Precipitation mean(precip_mean)
  • Precipitation maximum(precip_max)
  • Precipitation standard deviation(precip_sd)
  • precipitation minimum(precip_min)


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DQRID : D060502.3
Start DateStart TimeEnd DateEnd Time
04/27/2006233005/02/20060201
Subject:
TWP/SMET/C3 - Reprocess: Windspeed2 calibration error
DataStreams:twpsmet60sC3.b1
Description:
The lower anemometer was replaced afer being removed in anticipation of cyclone Monica. 
The calibration coefficient was not changed during this period so the wind speeds are a 
little low (0.2%).
Measurements:twpsmet60sC3.b1:
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Wind #2 speed minimum(wind2_spd_min)
  • Wind #2 speed maximum(wind2_spd_max)
  • Wind #2 speed standard deviation(wind2_spd_sd)


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DQRID : D060509.1
Start DateStart TimeEnd DateEnd Time
04/07/2006000005/18/20062359
Subject:
TWP/GNDRAD/C3 - IRT failed
DataStreams:twpgndrad60sC3.b1
Description:
The IRT began to fail on 4/7/2006 and failed completely (apparently due to the internal 
power supply) on 4/27. It was replaced on 5/18.
Measurements:twpgndrad60sC3.b1:
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)


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DQRID : D060522.1
Start DateStart TimeEnd DateEnd Time
05/09/2006000010/14/20060237
Subject:
TWP/SMET/C1 - Upper wind speed sensor failure
DataStreams:twpsmet60sC1.b1
Description:
The upper wind speed sensor was binding at low wind speeds.  Comparison to the lower wind 
sensor showed that the upper sensor flat-lines for long periods of time.  The upper 
anemometer was replaced.
Measurements:twpsmet60sC1.b1:
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #1 speed minimum(wind1_spd_min)


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DQRID : D060614.2
Start DateStart TimeEnd DateEnd Time
06/05/2006214406/15/20060427
Subject:
TWP/SMET/C2 - Temp/RH probe failure
DataStreams:twpsmet60sC2.b1
Description:
Temperature/RH probe failed and was replaced.
Measurements:twpsmet60sC2.b1:
  • Relative humidity mean(relh_mean)
  • Mean Air Temperature or Hardware Error(temp_mean)
  • Relative humidity maximum(relh_max)
  • Std Dev of Relative Humidity or Hardware Error Code(relh_sd)
  • Temperature standard deviation(temp_sd)
  • Min Temperature at lowest Model Level- 1 hr(temp_min)
  • Relative humidity minimum(relh_min)
  • Vapor pressure standard deviation(vappress_sd)
  • Max Temperature at lowest Model Level- 1 hr(temp_max)
  • Vapor pressure mean(vappress_mean)


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DQRID : D060627.1
Start DateStart TimeEnd DateEnd Time
06/27/2006011506/27/20060344
Subject:
TWP/SMET/C3 - Anemometer Readings Incorrect
DataStreams:twpsmet60sC3.b1
Description:
The Anemometer readings were incorrect due to the tower being lowered for maintenance.
Measurements:twpsmet60sC3.b1:
  • Wind #2 speed arithmetic average(wind2_spd_arith_avg)
  • Wind #1 speed minimum(wind1_spd_min)
  • Wind #1 direction vector average(wind1_dir_vec_avg)
  • Wind #1 speed standard deviation(wind1_spd_sd)
  • Wind #2 speed maximum(wind2_spd_max)
  • Wind #1 speed vector average(wind1_spd_vec_avg)
  • Wind #2 direction vector average(wind2_dir_vec_avg)
  • Wind #1 direction standard deviation(wind1_dir_sd)
  • Wind #2 speed vector average(wind2_spd_vec_avg)
  • Wind #2 speed maximum gust(wind2_spd_max_gust)
  • Wind #1 speed maximum(wind1_spd_max)
  • Wind #2 speed minimum(wind2_spd_min)
  • Wind #1 speed maximum gust(wind1_spd_max_gust)
  • Wind #1 speed arithmetic average(wind1_spd_arith_avg)
  • Wind #2 direction standard deviation(wind2_dir_sd)
  • Wind #2 speed standard deviation(wind2_spd_sd)


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DQRID : D060630.31
Start DateStart TimeEnd DateEnd Time
08/02/2004020012/21/20052205
Subject:
TWP/SKYRAD/C1 - Reprocess: Longwave Calibration error
DataStreams:twpskyrad60sC1.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in December 2003.  
These modified procedures introduced a calibration bias in the longwave data.  The 
previous procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations.                                                             
                The data collected while the incorrect procedures were in place are 
being reprocessing to remove the calibration bias.  Note, this also affected standard 
deviation, maximum and minimum data fields.
Measurements:twpskyrad60sC1.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)


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DQRID : D060630.32
Start DateStart TimeEnd DateEnd Time
07/05/2004050012/21/20052150
Subject:
TWP/SKYRAD/C2 - Reprocess: Longwave Calibration error
DataStreams:twpskyrad60sC2.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in December 2003.  
These modified procedures introduced a calibration bias in the longwave data.  The 
previous procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations.                                                             
                The data collected while the incorrect procedures were in place are 
being reprocessing to remove the calibration bias.  Note, this also affected standard 
deviation, maximum and minimum data fields.
Measurements:twpskyrad60sC2.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2)


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DQRID : D060630.33
Start DateStart TimeEnd DateEnd Time
05/20/2004220012/21/20052136
Subject:
TWP/SKYRAD/C3 - Reprocess: Longwave Calibration error
DataStreams:twpskyrad60sC3.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in December 2003.  
These modified procedures introduced a calibration bias in the longwave data.  The 
previous procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations.                                                             
                The data collected while the incorrect procedures were in place are 
being reprocessing to remove the calibration bias.  Note, this also affected standard 
deviation, maximum and minimum data fields.
Measurements:twpskyrad60sC3.b1:
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer2(down_long_hemisp_shaded2)
  • Downwelling Longwave Hemispheric Irradiance, Shaded Pyrgeometer1(down_long_hemisp_shaded1)


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DQRID : D060630.34
Start DateStart TimeEnd DateEnd Time
08/02/2004070012/21/20052204
Subject:
TWP/GNDRAD/C1 - Reprocess: Longwave Calibration error
DataStreams:twpgndrad60sC1.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in December 2003.  
These modified procedures introduced a calibration bias in the longwave data.  The 
previous procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations.                                                             
                The data collected while the incorrect procedures were in place are 
being reprocessing to remove the calibration bias.  Note, this also affected standard 
deviation, maximum and minimum data fields.
Measurements:twpgndrad60sC1.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)


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DQRID : D060630.35
Start DateStart TimeEnd DateEnd Time
07/05/2004220212/21/20052149
Subject:
TWP/GNDRAD/C2 - Reprocess: Longwave Calibration error
DataStreams:twpgndrad60sC2.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in December 2003.  
These modified procedures introduced a calibration bias in the longwave data.  The 
previous procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations.                                                             
                The data collected while the incorrect procedures were in place are 
being reprocessing to remove the calibration bias.  Note, this also affected standard 
deviation, maximum and minimum data fields.
Measurements:twpgndrad60sC2.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)


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DQRID : D060630.36
Start DateStart TimeEnd DateEnd Time
05/20/2004010012/21/20052137
Subject:
TWP/GNDRAD/C3 - Reprocess: Longwave Calibration error
DataStreams:twpgndrad60sC3.b1
Description:
Modified pyrgeometer calibration procedures were implemented beginning in December 2003.  
These modified procedures introduced a calibration bias in the longwave data.  The 
previous procedures were re-implemented at all sites between December 2005 and February 2006 to 
restore proper calibrations.                                                             
                The data collected while the incorrect procedures were in place are 
being reprocessing to remove the calibration bias.  Note, this also affected standard 
deviation, maximum and minimum data fields.
Measurements:twpgndrad60sC3.b1:
  • Upwelling (10 meter) Longwave Hemispheric Irradiance, Ventilated Pyrgeometer(up_long_hemisp)


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DQRID : D060804.1
Start DateStart TimeEnd DateEnd Time
07/19/2006223907/24/20060727
Subject:
TWP/SKYRAD/C2 - IRT signal loss
DataStreams:twpskyrad60sC2.b1
Description:
There was a significant drop in logger voltage that corresponds with a loss of the IR 
temperature. This was possibly due to a loose connection.
Measurements:twpskyrad60sC2.b1:
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)


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DQRID : D060817.3
Start DateStart TimeEnd DateEnd Time
10/09/1996000007/13/20062225
Subject:
TWP/SMET/C1 - Reprocess: Barometric Data Changed from hPa to kPa
DataStreams:twpsmet60sC1.b1
Description:
Barometric pressure data was converted from hPa to kPa in order to standardize the 
measurement units among ARM sites and to conform to accepted standard units determined by the 
scientific community.
Measurements:twpsmet60sC1.b1:
  • Atmospheric pressure(atmos_pressure)


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DQRID : D060818.2
Start DateStart TimeEnd DateEnd Time
10/21/1998000007/13/20062232
Subject:
TWP/SMET/C2 - Reprocess: Barometric Data Changed from hPa to kPa
DataStreams:twpsmet60sC2.b1
Description:
Barometric pressure data was converted from hPa to kPa in order to standardize the 
measurement units among ARM sites and to conform to accepted standard units determined by the 
scientific community.
Measurements:twpsmet60sC2.b1:
  • Atmospheric pressure(atmos_pressure)


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DQRID : D060818.3
Start DateStart TimeEnd DateEnd Time
12/02/2003000007/13/20062219
Subject:
TWP/SMET/C3 - Reprocess: Barometric Data Changed from hPa to kPa
DataStreams:twpsmet60sC3.b1
Description:
Barometric pressure data was converted from hPa to kPa in order to standardize the 
measurement units among ARM sites and to conform to accepted standard units determined by the 
scientific community.
Measurements:twpsmet60sC3.b1:
  • Atmospheric pressure(atmos_pressure)


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DQRID : D060823.1
Start DateStart TimeEnd DateEnd Time
05/19/2006000006/27/20060344
Subject:
TWP/GNDRAD/C3 - IRT bias
DataStreams:twpgndrad60sC3.b1
Description:
The IRT reported higher surface temperatures than the PIR due to corrosion on the 
terminals of the lightning protection module and a ground wire error. The corrosion was cleaned 
and the wiring corrected.
Measurements:twpgndrad60sC3.b1:
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)


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DQRID : D061011.2
Start DateStart TimeEnd DateEnd Time
10/09/1996000009/26/20061438
10/09/1996000010/17/20060000
Subject:
TWP/SMET/C1 - Reprocess: Tipping bucket rain gauge added
DataStreams:twpsmet60sC1.b1
Description:
A tipping bucket rain gauge was added to the TWP.C1 SMET suite of instruments on 20061017. 
 Effective 20060926, two new variables (count and rain amount) were added to the end of 
the twpsmet60sC1.b1 datastream.  Between 9/26 and 10/17, the data for these two variables 
are filled with zeros.  Users should not use the data during this period as the zeros 
are not representative of the rain fall at the site.  When reprocessing of this datastream 
occurs these variables will be added for the 19961009-20060926 and data from 
19961009-20061017 will be filled with -9999 (missing).
Measurements:twpsmet60sC1.b1:
  • Time offset from base_time(base_time)


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DQRID : D061011.3
Start DateStart TimeEnd DateEnd Time
10/21/1998000009/26/20061400
10/21/1998000011/29/20062014
Subject:
TWP/SMET/C2 - Reprocess: Tipping bucket rain gauge added
DataStreams:twpsmet60sC2.b1
Description:
A tipping bucket rain gauge was added to the TWP.C2 SMET suite of instruments on 20061129. 
Effective 20060926, two new variables (count and rain amount) were added to the end of 
the twpsmet60sC2.b1 datastream.  Between 9/26 and 11/29, the data for these two variables 
are filled with zeros.  Users should not use the data during this period as the zeros are 
not representative of the rain fall at the site.  When reprocessing of this datastream 
occurs these variables will be added for the 19981021-20060926 and data from 
19981021-20061129 will be filled with -9999 (missing).
Measurements:twpsmet60sC2.b1:
  • Time offset from base_time(base_time)


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DQRID : D061011.4
Start DateStart TimeEnd DateEnd Time
03/12/2002000009/26/20061435
Subject:
TWP/SMET/C3 - Reprocess: Tipping bucket rain gauge added
DataStreams:twpsmet60sC3.b1
Description:
A tipping bucket rain gauge was added to the SMET suite of instruments effective 20060926. 
 Two new variables (count and rain amount) were added at the end of the twpsmet60sC1.b1 
datastream.  When reprocessing of this datastream occurs these variables will be added 
with -9999 (missing) as the value for dates prior to gauge installation.
Measurements:twpsmet60sC3.b1:
  • Time offset from base_time(base_time)


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DQRID : D061016.1
Start DateStart TimeEnd DateEnd Time
10/13/2006013512/04/20062120
Subject:
TWP/SKYRAD/C2 - IRT signal
DataStreams:twpskyrad60sC2.b1
Description:
The IRT exhibited a bias of the analog voltage output that caused problems with the 
signals from the other SKYRAD radiometers. The bias was due to corrosion between the power and 
signal connections in the IRT cable. The IRT was disconnected on 10/18/2006 at 01:20 and 
replaced on 11/6/2006 at 23:00 but it too appeared to have grounding problems due to 
internal corrosion and was disconnected on 11/11/2006 at 11:42 and then intermittently 
reconnected for testing. A second spare was installed on 12/4/2006 which did not cause problems 
with the signals from the other instruments.
Measurements:twpskyrad60sC2.b1:
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)


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DQRID : D061120.1
Start DateStart TimeEnd DateEnd Time
11/16/2006200611/20/20060630
Subject:
TWP/SKYRAD/C3 - NIP Failure
DataStreams:twpskyrad20sC3.a0, twpskyrad60sC3.b1
Description:
Skyrad normal incident shortwave irradiance (NIP) started reporting impossible values for 
direct normal irradiance starting 16 November approx 2100GMT corresponding to a rain 
event at the same time.

The NIP was replaced fixing the problem.

Direct normal data are not recoverable.  However, the NIP data can be calculated from the 
global hemsipherical shortwave and global hemispherical diffuse datastreams by using the 
following relationship:
Global Horizontal = Direct Normal x cos(Z) + Diffuse Horizontal 
where Z is the zenith angle.
Measurements:twpskyrad60sC3.b1:
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)

twpskyrad20sC3.a0:
  • Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile
    Voltage(inst_direct_normal)


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DQRID : D061214.1
Start DateStart TimeEnd DateEnd Time
12/13/2006034201/16/20070440
Subject:
TWP/SKYRAD/C3 - NIP instrument failure
DataStreams:twpskyradC3.00, twpskyrad20sC3.a0, twpskyrad60sC3.b1
Description:
The NIP (Short Direct Normal) was replaced after it displayed symptoms of failure 
associated with either unknown precipitation related issues or a possible lightning strike.

NIP data are not recoverable.  Direct normal data can be reconstructed from global 
hemispheric and global diffuse data using the following relationship:
   global hemispheric = direct*cos(sza) + diffuse hemispheric
Measurements:twpskyradC3.00:
  • Raw data stream - documentation not supported(Raw data stream - documentation not supported)

twpskyrad60sC3.b1:
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Minima(short_direct_normal_min)
  • Shortwave Direct Normal Irradiance, Pyrheliometer(short_direct_normal)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Maxima(short_direct_normal_max)
  • Shortwave Direct Normal Irradiance, Pyrheliometer, Standard Deviation(short_direct_normal_std)

twpskyrad20sC3.a0:
  • Instantaneous Direct Normal Shortwave Irradiance, Pyrheliometer Thermopile
    Voltage(inst_direct_normal)


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DQRID : D070110.1
Start DateStart TimeEnd DateEnd Time
12/03/2006040002/04/20072316
Subject:
TWP/GNDRAD/C2 - IRT signal
DataStreams:twpgndrad60sC2.b1
Description:
When the other GNDRAD radiometers were replaced on 12/3/2006, the quality of the IRT 
signal began to degrade until 12/26 when it became unusable. The instrument was replaced on 
2/4/2007.
Measurements:twpgndrad60sC2.b1:
  • Surface Infra-Red Temperature Minima(sfc_ir_temp_min)
  • Surface Infra-Red Temperature, Standard Deviation(sfc_ir_temp_std)
  • Surface Infra-Red Temperature Maxima(sfc_ir_temp_max)
  • Effective Surface (Skin) Temperature(sfc_ir_temp)


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DQRID : D070404.2
Start DateStart TimeEnd DateEnd Time
12/04/2006212002/22/20070125
Subject:
TWP/SKYRAD/C2 - IRT calibration
DataStreams:twpskyrad60sC2.b1
Description:
The IRT was not properly calibrated and was not able to measure sky temperatures below 
273.2 K. (This instrument was the same one damaged by lightning in November 2005 in Darwin. 
It was returned for repair and received a new lens but was calibrated only down to 0 deg 
C, so the problem was neither detected nor repaired.) The IRT was replaced on 2/22/2007.
Measurements:twpskyrad60sC2.b1:
  • Sky/Cloud Infra-Red Temperature Minima(sky_ir_temp_min)
  • Sky/Cloud Infra-Red Temperature Maxima(sky_ir_temp_max)
  • Sky/Cloud Infra-Red Temperature(sky_ir_temp)
  • Sky/Cloud Infra-Red Temperature Standard Deviation(sky_ir_temp_std)


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