SGP/SIROS/E9 - downwelling PIR

The downwelling PIR data for this time period are incorrect because of a
wiring problem involving a mix-up of the cable ane preamplifier for this
SIROS platform.  Further information is given in C941109.3 for P940907.1.

• down_long_case_temp
• down_long_diffuse_hemisp
• down_long_dome_temp

• Development raw data stream - documentation not supported

SGP/SIROS/E9 - occasional spikes in readings

Since installation of this SIROS site to the dates specified, negative spikes
occurred in the data streams indicated.  These spikes were induced by electrical
interference from the fence that was used to keep out cattle.  The spikes were
eliminated by moving the fence further away from the SIROS sensors in October
1994.  An assessment by Mike Split on the effects of the spikes indicated that
the spikes superimposed on the readings ranged from -10 to -100 W m^-2.  As many
as 40 per day could occur.  As a result of these spikes, the daily average
reading of irradiance could be reduced by as much as 1 W m^-2, a half-hour
average could be reduced by as much as 2 W m^-2, and a 5-min average could be
affected by as much as 5 W m^-2.

• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)

• Development raw data stream - documentation not supported

SGP/SIROS/E4 - wrong units for broadband irradiance

Headers for SIROS, MFR25m and MFR10m give the units for
broadband irradiance as 'watts per square meter' (W/M^2).  
However, the
 units are really 'counts'.  The fields affected 
are SIROS:
   'hemisp_broadband:units'
   'diffuse_hemisp_broadband:units'
   'direct_norm_broadband:units'
MFR:
'mfr_up_hemisp_broadband:units'

This problem has existed since the beginning of the data streams, and was
corrected by Jeff Slater on 1/23/96 (see C960314.2 by Ken Yates that closed
P960229.2)

• hemisp_broadband
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband

SGP/SIROS/E7 - wrong units for broadband irradiance

Headers for SIROS, MFR25m and MFR10m give the units for
broadband irradiance as 'watts per square meter' (W/M^2).  
However, the
 units are really 'counts'.  The fields affected 
are SIROS:
   'hemisp_broadband:units'
   'diffuse_hemisp_broadband:units'
   'direct_norm_broadband:units'
MFR:
'mfr_up_hemisp_broadband:units'

This problem has existed since the beginning of the data streams, and was
corrected by Jeff Slater on 1/23/96 (see C960314.2 by Ken Yates that closed
P960229.2)

• hemisp_broadband
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband

SGP/SIROS/E8 - wrong units for broadband irradiance

Headers for SIROS, MFR25m and MFR10m give the units for
broadband irradiance as 'watts per square meter' (W/M^2).  
However, the
 units are really 'counts'.  The fields affected 
are SIROS:
   'hemisp_broadband:units'
   'diffuse_hemisp_broadband:units'
   'direct_norm_broadband:units'
MFR:
'mfr_up_hemisp_broadband:units'

This problem has existed since the beginning of the data streams, and was
corrected by Jeff Slater on 1/23/96 (see C960314.2 by Ken Yates that closed
P960229.2)

• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband
• hemisp_broadband

SGP/SIROS/E9 - wrong units for broadband irradiance

Headers for SIROS, MFR25m and MFR10m give the units for
broadband irradiance as 'watts per square meter' (W/M^2).  
However, the
 units are really 'counts'.  The fields affected 
are SIROS:
   'hemisp_broadband:units'
   'diffuse_hemisp_broadband:units'
   'direct_norm_broadband:units'
MFR:
'mfr_up_hemisp_broadband:units'

This problem has existed since the beginning of the data streams, and was
corrected by Jeff Slater on 1/23/96 (see C960314.2 by Ken Yates that closed
P960229.2)

• Direct Normal Broadband Irradiance(direct_norm_broadband)
• hemisp_broadband
• diffuse_hemisp_broadband

SGP/SIROS/E9 - Bad Calibrations for MFRSR channels

per Nels Larson (11/09/94)

"The MFRSR gains measured in the field were found to be different than the 
values used in the Ashton SIROS CalibInfo files used to process the data 
for Board 93913, which was installed 94/03/17.

I have dug deeply into my notes from Jerry Berndt's visit to the field in
March, and found some gains he reported for the board at that time. I also
found a note on the same page stating that I should refer to the calibration
sheet in his lab notebook for the proper gains. Well, I used the gains from
the lab notebook and didn't check them against the gains he rattled off over
the phone. The ones he gave me verbally match pretty well with the actual
state of the board as found by John in October.

What will need to be done is to correct the processed Ashton data stream of
the MFRSR Detector Channels 3,4,6,7 (499,608,859,934 nm) for improper logger
board gains effective 94/03/17. Because it is such a long period of data, I
would recommend reprocessing the data with the new CalibInfo files, rather
than including a set of constants to apply to the old MFRSR data values.

Again, only the MFRSR Detector channels are affected by these calibration
changes. The non-MFRSR Detector data, including the PIR, PSP, NIP,
MFRSR temperature, and logger health data, are unaffected."

• Direct Normal Broadband Irradiance(direct_norm_broadband)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• hemisp_broadband
• diffuse_hemisp_narrowband
• hemisp_narrowband
• diffuse_hemisp_broadband

• Development raw data stream - documentation not supported

Improper sds-mode global metadata value

DQR No:

Subject: SGP/SIROS.E9 - Improper sds-mode global metadata value

Date Submitted: September 20, 1994
Submitted By: PJ Caraher
 ___  Instrument Mentor
 ___  EST Member
 ___  Science Team Member
 X__  Other : DMT member
 
Organization: Argonne National Lab
Email address: caraher@athens.dis.anl.gov
Telephone: (708)252-4262

Platform/Measurement: DsgpsirosE9
	What level data: (raw,a0,a1,b1,c1 etc): a1

    What location was the data collected at: Ashton (E9)
 
    Period of time in question
 	Begin Date  04/01/94   Time   00:00    (GMT)
 	End Date    07/28/94   Time   00:00    (GMT)

 Data should be labeled:
 ___  questionable
 X__  incorrect
 ___  wrong calibration
 ___  others _______________________________
 
 Discussion of Problem:

    While reingesting the SIROS data for E9 (Ashton) I improperly ran
    the ingest in "testrun" mode rather than "production" mode.  Thus
    the reingested data from April 01 through July 28 should have its
    sds-mode (global metadata value) as "production" rather than
    "testrun".
 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

    This is a very minor problem but it should be noted so as to avoid
    any confusion.



REQUIRED ACTIONS:

This report is informational no further action required___Yes___

Experiment Center action required as follows:



Site Operations action required as follows:




Archive action required as follows:



-------------------------------------------------------
TO BE FILLED IN UPON COMPLETION OF ACTION ABOVE:
 Action Taken:


Experiment Center:


 
Site Operations:



Archive:




EST:

• flag_nighttime1-24
• lat
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• down_long_diffuse_hemisp
• hemisp_broadband
• logger_temp
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• up_long_case_temp
• diffuse_hemisp_broadband
• flag_ln_error1-24
• mfrsr_temp
• lon
• down_long_case_temp
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• flag_zero_cosine1-24
• logger_volt
• alt
• down_long_dome_temp
• diffuse_hemisp_narrowband
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• channel
• flag_zero_divisor1-24
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• therm_volt
• time_offset
• base_time
• hemisp_narrowband
• up_long_dome_temp

Installation of new data logger PROM

DQR No:                               Platform: sgpsirosE9

Subject: Installation of new data logger PROM

Date Submitted: 95/03/27
Submitted By: Nels Larson             _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________

For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement: All data
	What level data: (raw,a0,a1,b1,c1 etc): All

    What location was the data collected at: Ashton

    Period of time in question
 	Begin Date  95/03/09   Time   15:12    (GMT)
 	End Date    95/03/09   Time   15:53    (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 ___  incorrect                         ___  Only some data fields affected
 ___  wrong calibration
 ___  others 

 Discussion of Problem:

The MFRSR head for sgpmsirosE9 was changed by the mentors. The old head, 923,
was removed for recalibration, and the new head, 229, was installed.
No data was acquired between 95/03/09 15:12-15:53.
The data logger PROM was upgraded to the lateset Version 13.

Other observations/measurements impacted by this problem:


Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)


Data Processing Notes                Date

• flag_nighttime1-24
• lat
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• down_long_diffuse_hemisp
• hemisp_broadband
• logger_temp
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• up_long_case_temp
• diffuse_hemisp_broadband
• flag_ln_error1-24
• mfrsr_temp
• lon
• down_long_case_temp
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• flag_zero_cosine1-24
• logger_volt
• alt
• down_long_dome_temp
• diffuse_hemisp_narrowband
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• channel
• flag_zero_divisor1-24
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• therm_volt
• time_offset
• base_time
• hemisp_narrowband
• up_long_dome_temp

Bad upwelling IR signal, bad upwelling SW signal

Data has been collected at site E4 since
about April 1995.  We have just started to examine data from this
site taken from about 1 March 1996.  We do not know the quality of
the data before this date.  After this date, the signal from
the upwelling IR pyrgeometer is bad, as well as the signal from the
upwelling SW pyranometer.

Suggested Corrections of the Problem:

Inspect and fix the offending instruments (the repairpersons at the
SGP site have been notified about these instruments).

• logger_volt
• diffuse_hemisp_narrowband
• alt
• hemisp_broadband
• flag_zero_divisor1-24
• flag_nighttime1-24
• base_time
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• up_long_case_temp
• hemisp_narrowband
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• channel
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• lat
• time_offset
• down_long_diffuse_hemisp
• mfrsr_temp
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• down_long_case_temp
• diffuse_hemisp_broadband
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• flag_ln_error1-24
• up_long_dome_temp
• down_long_dome_temp
• therm_volt
• lon
• flag_zero_cosine1-24
• logger_temp

Bad upwelling and downwelling IR signal, bad upwelling SW signal

Data has been collected at site E3 since
about March 6, 1996. From this date to about March 21, 1996, the signal
from both IR pyrgeometers (both upwelling and downwelling) is bad. 
After March 21, 1996 these instruments were repaired and the data looks
reasonable.

• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• logger_volt
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• flag_ln_error1-24
• down_long_case_temp
• alt
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• channel
• flag_nighttime1-24
• up_long_case_temp
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• base_time
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• hemisp_narrowband
• lon
• flag_zero_cosine1-24
• time_offset
• flag_zero_divisor1-24
• diffuse_hemisp_broadband
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• mfrsr_temp
• lat
• logger_temp
• down_long_diffuse_hemisp
• down_long_dome_temp
• therm_volt
• up_long_dome_temp
• diffuse_hemisp_narrowband
• hemisp_broadband

Unshaded PSP dirty domes

Subject: Unshaded PSP dirty domes

Platform/Measurement: sgpsiros/unshaded PSP

What location was the data collected at: E8, E11                                

Period of time in question
        Begin Date  03/21/96 
        End Date    04/02/96 

Discussion of Problem:
 
   Large differences between estimates of downwelling hemispheric
   shortwave radiation from the unshaded PSP and the combination
   of the NIP and shaded PSP were observed as early as March 21,
   1996 and lasted through April 2, 1996 when Site Operations
   cleaned the radiometer domes at E8.  The differences were as
   high as 150 W/m^2 during the late afternoon on several days
   within this period. The cause of the differences seems to be
   dirt on the unshaded PSP dome (which was observed before the
   dome was cleaned) causing the estimate from the unshaded PSP
   to be lower than expected.  The dome condition observation
   was obtained by email communication with Site Operatons
   staff and is not know to be logged elsewhere.

   Differences in the downwelling hemispheric shortwave estimates
   at E11 (though not nearly as large as at E8) showed improvement
   after dome cleaning activities on April 2, as well.

   A postscript file attachment depicts the data for E8 on 
   April 2 and the cleaning of the dome can be identified at the time:
   Day of Year 93.82, or at about 1930Z.

• flag_ln_error1-24
• alt
• flag_zero_cosine1-24
• down_long_dome_temp
• therm_volt
• diffuse_hemisp_broadband
• up_long_dome_temp
• flag_nighttime1-24
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• logger_temp
• base_time
• hemisp_broadband
• lon
• down_long_case_temp
• diffuse_hemisp_narrowband
• time_offset
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• flag_zero_divisor1-24
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• up_long_case_temp
• down_long_diffuse_hemisp
• lat
• channel
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• mfrsr_temp
• logger_volt
• hemisp_narrowband
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)

• time_offset
• alt
• base_time
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• hemisp_broadband
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• logger_temp
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• diffuse_hemisp_broadband
• up_long_dome_temp
• flag_zero_cosine1-24
• flag_zero_divisor1-24
• flag_nighttime1-24
• logger_volt
• lat
• channel
• therm_volt
• hemisp_narrowband
• down_long_case_temp
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• flag_ln_error1-24
• up_long_case_temp
• diffuse_hemisp_narrowband
• down_long_diffuse_hemisp
• mfrsr_temp
• lon
• down_long_dome_temp

SGP/SIROS/E4 - Wrong units for broadband irradiance

Headers for SIROS, MFR25m and MFR10m give the units for broadband irradiance as 
'watts per square meter' (W/m^2). However, the units are really 'counts'. 
The fields affected are SIROS:  
'hemisp_broadband:units'
'diffuse_hemisp_broadband:units'
'direct_norm_broadband:units'
MFR:
'mfr_up_hemisp_broadband:units'

This problem has existed since the beginning of the data streams, and was corrected 
by Jeff Slater on 1/23/96 (see C960314.2 by Ken Yates that closed P960229.2)

• hemisp_broadband
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband

SGP/SIROS/E7 - Wrong units for broadband irradiance

Headers for SIROS, MFR25m and MFR10m give the units for broadband irradiance as 
'watts per square meter' (W/m^2). However, the units are really 'counts'. 
The fields affected are SIROS:  
'hemisp_broadband:units'
'diffuse_hemisp_broadband:units'
'direct_norm_broadband:units'
MFR:
'mfr_up_hemisp_broadband:units'

This problem has existed since the beginning of the data streams, and was corrected 
by Jeff Slater on 1/23/96 (see C960314.2 by Ken Yates that closed P960229.2)

• hemisp_broadband
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband

SGP/SIROS/E8 - Wrong units for broadband irradiance

Headers for SIROS, MFR25m and MFR10m give the units for broadband irradiance as 
'watts per square meter' (W/m^2). However, the units are really 'counts'. 
The fields affected are SIROS:  
'hemisp_broadband:units'
'diffuse_hemisp_broadband:units'
'direct_norm_broadband:units'
MFR:
'mfr_up_hemisp_broadband:units'

This problem has existed since the beginning of the data streams, and was corrected 
by Jeff Slater on 1/23/96 (see C960314.2 by Ken Yates that closed P960229.2)

• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband
• hemisp_broadband

SGP/SIROS/E9 - Wrong units for broadband irradiance

Headers for SIROS, MFR25m and MFR10m give the units for broadband irradiance as 
'watts per square meter' (W/m^2). However, the units are really 'counts'. 
The fields affected are SIROS:  
'hemisp_broadband:units'
'diffuse_hemisp_broadband:units'
'direct_norm_broadband:units'
MFR:
'mfr_up_hemisp_broadband:units'

This problem has existed since the beginning of the data streams, and was corrected 
by Jeff Slater on 1/23/96 (see C960314.2 by Ken Yates that closed P960229.2)

• Direct Normal Broadband Irradiance(direct_norm_broadband)
• hemisp_broadband
• diffuse_hemisp_broadband

SGP/SIROS - wrong units for broadband irradiance

Headers for SIROS, give the units for broadband irradiance as 'watts per square meter' 
(w/m^2).  However, the units are really 'counts'.  The fields affected are:
'hemisp_broadband:units'
'diffuse_hemisp_broadband:units'
'direct_norm_broadband:units'

This problem existed since the beginning of the data streams, and was
corrected on 1/23/96.

• hemisp_broadband
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband

• Direct Normal Broadband Irradiance(direct_norm_broadband)
• hemisp_broadband
• diffuse_hemisp_broadband

• hemisp_broadband
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband

• hemisp_broadband
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband

• hemisp_broadband
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband

• hemisp_broadband
• diffuse_hemisp_broadband
• Direct Normal Broadband Irradiance(direct_norm_broadband)

• hemisp_broadband
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband

• hemisp_broadband
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband

• hemisp_broadband
• diffuse_hemisp_broadband
• Direct Normal Broadband Irradiance(direct_norm_broadband)

• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband
• hemisp_broadband

• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband
• hemisp_broadband

• hemisp_broadband
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband

• diffuse_hemisp_broadband
• hemisp_broadband
• Direct Normal Broadband Irradiance(direct_norm_broadband)

• diffuse_hemisp_broadband
• hemisp_broadband
• Direct Normal Broadband Irradiance(direct_norm_broadband)

• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband
• hemisp_broadband

• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband
• hemisp_broadband

MFRSR out of alignment

DQR

Date Submitted: 10 May 1996
Submitted By: Jim Barnard             _X_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at problems@arm.gov.

Platform/Measurement:
        What level data: (raw,a0,a1,b1,c1 etc): raw,a0,a1

    What location was the data collected at: E8
 
    Period of time in question
        Begin Date   about 96/04/18  
        End Date     ongoing problem  


 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _x_  incorrect                         _x_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem: The MFRSR at site E8 has been out of alignment
from about 96/04/18 to the present time.  This is an ongoing problem.  The poor
alignment manifests itself in a sawtooth pattern in the direct beam and diffuse
components of the MFRSR data.  During the time this pattern exists, the data
are almost useless.  For this site, the poor alignment affects the afternoon data.
 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.): align instument at
earliest possible time (Logistically, this is harder than it seems at
first glance).

• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_narrowband
• diffuse_hemisp_broadband

SGP/SIROS/E4 - time offset on 960529

On 960529, site E4 was brought back on line.  For reasons I do not understand
the time stamp was incorrect for most of this day; for example, the sun
is at its zenith at about 0900 LST!  This is clearly incorrect.  In
the afternoon and evening hours, this site goes "down" and after this
down period the time problem appears to be solved.  The next day's
data (960530) looks correct and there appears to be no time problem.

• logger_volt
• diffuse_hemisp_narrowband
• alt
• hemisp_broadband
• flag_zero_divisor1-24
• flag_nighttime1-24
• base_time
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• up_long_case_temp
• hemisp_narrowband
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• channel
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• lat
• time_offset
• down_long_diffuse_hemisp
• mfrsr_temp
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• down_long_case_temp
• diffuse_hemisp_broadband
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• flag_ln_error1-24
• up_long_dome_temp
• down_long_dome_temp
• therm_volt
• lon
• flag_zero_cosine1-24
• logger_temp

missing MFRSR data site E5

Site E5 was fired up on about 96/05/31.  An MFRSR was not connected due
to a lack of MFRSR parts.  Consequently, no MFRSR measurements are being
made at this site, and the MFRSR output consists of zeros.

• flag_ln_error1-24
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• hemisp_broadband
• flag_zero_cosine1-24
• lon
• diffuse_hemisp_narrowband
• therm_volt
• mfrsr_temp
• base_time
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• flag_nighttime1-24
• down_long_case_temp
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• up_long_case_temp
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• channel
• down_long_diffuse_hemisp
• flag_zero_divisor1-24
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• down_long_dome_temp
• time_offset
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• lat
• hemisp_narrowband
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• up_long_dome_temp
• logger_volt
• logger_temp
• alt
• diffuse_hemisp_broadband

MFRSR data missing - 960508 to 960612 site E4

The MFRSR head was damaged at site E4.  MFRSR data was not collected
from 960508 to about 960612.  The head was replaced on 960612 about 1700 GMT
and data collection again started. During the time the data was NOT
collected, zeros will appear for all MFRSR data fields.  This DQR
supercedes DQR D960608.1.

• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• diffuse_hemisp_narrowband
• hemisp_broadband
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• mfrsr_temp
• hemisp_narrowband
• diffuse_hemisp_broadband

data unrecoverable 950309 to 950515

At site E7, from the dates 950309 to 950515, the data is unrecoverable.
This problem appears to be caused by a bug in the program that is stored
on the data logger board's EPROM.  The data might be recoverable with
great effort. Note: this site was first turned on about 950300 so
there's little or no data before this time.

• logger_volt
• diffuse_hemisp_narrowband
• alt
• hemisp_broadband
• flag_zero_divisor1-24
• flag_nighttime1-24
• base_time
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• up_long_case_temp
• hemisp_narrowband
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• channel
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• lat
• time_offset
• down_long_diffuse_hemisp
• mfrsr_temp
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• down_long_case_temp
• diffuse_hemisp_broadband
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• flag_ln_error1-24
• up_long_dome_temp
• down_long_dome_temp
• therm_volt
• lon
• flag_zero_cosine1-24
• logger_temp

E3 - MFRSR out of alignment

The MFRSR at site E3 appears to be woefully out of alignment.  The alignment
problems started about 96/06/01.  It's not possible to exactly pin down
the date that the alignment problem started because the cloudy weather
that occured around 96/06/01 makes the detection of alignment problems
difficult.  (In fact, it wasn't until 96/06/19 that the problem could
be detected unambigiously).  The alignment problem at this site is so
severe that both the morning and afternoon data streams are affected. 
The alignment problem does not affect the total, downwelling radiation
stream.

• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• logger_volt
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• flag_ln_error1-24
• down_long_case_temp
• alt
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• channel
• flag_nighttime1-24
• up_long_case_temp
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• base_time
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• hemisp_narrowband
• lon
• flag_zero_cosine1-24
• time_offset
• flag_zero_divisor1-24
• diffuse_hemisp_broadband
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• mfrsr_temp
• lat
• logger_temp
• down_long_diffuse_hemisp
• down_long_dome_temp
• therm_volt
• up_long_dome_temp
• diffuse_hemisp_narrowband
• hemisp_broadband

E7 - MFRSR out of alignment

The day of 96/06/19 was clear at site E7.  Inspection of the data shows
that this site suffers from an slight alignment problem that affects the
data measured in the afternoon.  The alignment problem could affect data
taken before this time and go unnoticed because clear skies are usually 
necessary to detect all but the most severe alignment problems.  The
total, downwelling radiation stream is not affected by the alignment
problem.

• diffuse_hemisp_narrowband
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• diffuse_hemisp_broadband

bad data - MFRSR - site E9

From about 960614 to 960725, the data emanating from the MFRSR at site E9
was very noisy indicating that there was a problem with the instrument.
On 960725, the MFRSR head was changed and the problem appears to have been
solved.  The data quality could be poor prior to 960614, so beware!

• flag_nighttime1-24
• lat
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• down_long_diffuse_hemisp
• hemisp_broadband
• logger_temp
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• up_long_case_temp
• diffuse_hemisp_broadband
• flag_ln_error1-24
• mfrsr_temp
• lon
• down_long_case_temp
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• flag_zero_cosine1-24
• logger_volt
• alt
• down_long_dome_temp
• diffuse_hemisp_narrowband
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• channel
• flag_zero_divisor1-24
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• therm_volt
• time_offset
• base_time
• hemisp_narrowband
• up_long_dome_temp

time stamp error

The internal code that runs the MFRSR data logger
had a bug that occasionally caused the time stamp associated with the data to
be slightly in error.  This error is thought to be very small (say less than
30 seconds) and very infrequent.  (Unfortunately, we cannot give firm
estimates of the magnitude and frequency of the error). 

After 96/07/10 the problem was corrected.  Those who use the data before this
time should realize that the time stamp for each record of data might be
slightly in error.

• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• logger_volt
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• flag_ln_error1-24
• down_long_case_temp
• alt
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• channel
• flag_nighttime1-24
• up_long_case_temp
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• base_time
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• hemisp_narrowband
• lon
• flag_zero_cosine1-24
• time_offset
• flag_zero_divisor1-24
• diffuse_hemisp_broadband
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• mfrsr_temp
• lat
• logger_temp
• down_long_diffuse_hemisp
• down_long_dome_temp
• therm_volt
• up_long_dome_temp
• diffuse_hemisp_narrowband
• hemisp_broadband

time stamp error

The internal code that runs the MFRSR data logger
had a bug that occasionally caused the time stamp associated with the data to
be slightly in error.  This error is thought to be very small (say less than
30 seconds) and very infrequent.  (Unfortunately, we cannot give firm
estimates of the magnitude and frequency of the error). 

After 96/07/11 the problem was corrected.  Those who use the data before this
time should realize that the time stamp for each record of data might be
slightly in error.

• alt
• flag_zero_cosine1-24
• hemisp_broadband
• up_long_dome_temp
• base_time
• lat
• diffuse_hemisp_narrowband
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• logger_temp
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• time_offset
• down_long_dome_temp
• flag_ln_error1-24
• flag_nighttime1-24
• flag_zero_divisor1-24
• down_long_diffuse_hemisp
• lon
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• therm_volt
• down_long_case_temp
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• channel
• logger_volt
• mfrsr_temp
• diffuse_hemisp_broadband
• hemisp_narrowband
• up_long_case_temp

time stamp error

The internal code that runs the MFRSR data logger
had a bug that occasionally caused the time stamp associated with the data to
be slightly in error.  This error is thought to be very small (say less than
30 seconds) and very infrequent.  (Unfortunately, we cannot give firm
estimates of the magnitude and frequency of the error). 

After 96/07/11 the problem was corrected.  Those who use the data before this
time should realize that the time stamp for each record of data might be
slightly in error.

• flag_ln_error1-24
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• hemisp_broadband
• flag_zero_cosine1-24
• lon
• diffuse_hemisp_narrowband
• therm_volt
• mfrsr_temp
• base_time
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• flag_nighttime1-24
• down_long_case_temp
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• up_long_case_temp
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• channel
• down_long_diffuse_hemisp
• flag_zero_divisor1-24
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• down_long_dome_temp
• time_offset
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• lat
• hemisp_narrowband
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• up_long_dome_temp
• logger_volt
• logger_temp
• alt
• diffuse_hemisp_broadband

time stamp error

The internal code that runs the MFRSR data logger
had a bug that occasionally caused the time stamp associated with the data to
be slightly in error.  This error is thought to be very small (say less than
30 seconds) and very infrequent.  (Unfortunately, we cannot give firm
estimates of the magnitude and frequency of the error). 

After 96/07/11 the problem was corrected.  Those who use the data before this
time should realize that the time stamp for each record of data might be
slightly in error.

• logger_volt
• diffuse_hemisp_narrowband
• alt
• hemisp_broadband
• flag_zero_divisor1-24
• flag_nighttime1-24
• base_time
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• up_long_case_temp
• hemisp_narrowband
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• channel
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• lat
• time_offset
• down_long_diffuse_hemisp
• mfrsr_temp
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• down_long_case_temp
• diffuse_hemisp_broadband
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• flag_ln_error1-24
• up_long_dome_temp
• down_long_dome_temp
• therm_volt
• lon
• flag_zero_cosine1-24
• logger_temp

time stamp error

The internal code that runs the MFRSR data logger
had a bug that occasionally caused the time stamp associated with the data to
be slightly in error.  This error is thought to be very small (say less than
30 seconds) and very infrequent.  (Unfortunately, we cannot give firm
estimates of the magnitude and frequency of the error). 

After 96/07/10 the problem was corrected.  Those who use the data before this
time should realize that the time stamp for each record of data might be
slightly in error.

• time_offset
• flag_ln_error1-24
• up_long_case_temp
• base_time
• alt
• diffuse_hemisp_narrowband
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• hemisp_broadband
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• down_long_diffuse_hemisp
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• mfrsr_temp
• logger_temp
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• diffuse_hemisp_broadband
• up_long_dome_temp
• flag_zero_cosine1-24
• lon
• flag_zero_divisor1-24
• flag_nighttime1-24
• logger_volt
• lat
• down_long_dome_temp
• channel
• therm_volt
• hemisp_narrowband
• down_long_case_temp
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)

time stamp error

The internal code that runs the MFRSR data logger
had a bug that occasionally caused the time stamp associated with the data to
be slightly in error.  This error is thought to be very small (say less than
30 seconds) and very infrequent.  (Unfortunately, we cannot give firm
estimates of the magnitude and frequency of the error). 

After 96/07/09 the problem was corrected.  Those who use the data before this
time should realize that the time stamp for each record of data might be
slightly in error.

• flag_nighttime1-24
• lat
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• down_long_diffuse_hemisp
• hemisp_broadband
• logger_temp
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• up_long_case_temp
• diffuse_hemisp_broadband
• flag_ln_error1-24
• mfrsr_temp
• lon
• down_long_case_temp
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• flag_zero_cosine1-24
• logger_volt
• alt
• down_long_dome_temp
• diffuse_hemisp_narrowband
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• channel
• flag_zero_divisor1-24
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• therm_volt
• time_offset
• base_time
• hemisp_narrowband
• up_long_dome_temp

MFRSR out of alignment

From about 96/06/19 to about 96/12/24 1630 GMT the MFRSR has suffered from
alignment problems (to varying degrees).   These alignment difficulties have 
a very colorful history; to wit:

96/06/19 - alignment problem detected that affects data measured in the
           afternoon (as noted by the sawtooth pattern in the data)

96/07/21 - alignment occurs, but the alignment problem still persists

96/08/08 - another alignment occurs, but the alignment is now much worse

96/09/18  - yet another alignment occurs, and the alignment is now much
            better, although the instrument is still a little out of alignment

96/10/02  - yet another alignment with more improvement noted, but an
            alignment problem still is detectable

96/12/01 - suddendly the alignment gets MUCH worse (just look at the
           morning data!!)

96/12/24 - yet another alignment; now the instrument appears to be
           in proper alignment. We hope that with this alignment the
           instrument is truly aligned and that the above "alignemnt 
           saga" (reminicent of Homer's Odyssey) has now been happily
           concluded - only time will tell.

• alt
• flag_zero_cosine1-24
• hemisp_broadband
• up_long_dome_temp
• base_time
• lat
• diffuse_hemisp_narrowband
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• logger_temp
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• time_offset
• down_long_dome_temp
• flag_ln_error1-24
• flag_nighttime1-24
• flag_zero_divisor1-24
• down_long_diffuse_hemisp
• lon
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• therm_volt
• down_long_case_temp
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• channel
• logger_volt
• mfrsr_temp
• diffuse_hemisp_broadband
• hemisp_narrowband
• up_long_case_temp

Tower down

On about 97/02/21 the tower that supports the  and  instruments
fell down.  As as consequence of the tower's demise, these two instruments
were became inoperative.  The tower was repaired on 97/03/13 and on
97/03/30 at about 16:30 GMT, the  and  came back on line.

• alt
• flag_zero_cosine1-24
• hemisp_broadband
• up_long_dome_temp
• base_time
• lat
• diffuse_hemisp_narrowband
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• logger_temp
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• time_offset
• down_long_dome_temp
• flag_ln_error1-24
• flag_nighttime1-24
• flag_zero_divisor1-24
• down_long_diffuse_hemisp
• lon
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• therm_volt
• down_long_case_temp
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• channel
• logger_volt
• mfrsr_temp
• diffuse_hemisp_broadband
• hemisp_narrowband
• up_long_case_temp

solar tracker inoperative

On about 970311 the solar tracker at site E4 apparently stopped working.
The NIP then was not pointed at the sun and read 0 all the time, and
the DD was not shaded and read too high.  The solar tracker was fixed
on about 97/03/20.  It is not possible to pin down the exact times when
the solar tracker was not working because of cloudy conditions.

• logger_volt
• diffuse_hemisp_narrowband
• alt
• hemisp_broadband
• flag_zero_divisor1-24
• flag_nighttime1-24
• base_time
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• up_long_case_temp
• hemisp_narrowband
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• channel
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• lat
• time_offset
• down_long_diffuse_hemisp
• mfrsr_temp
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• down_long_case_temp
• diffuse_hemisp_broadband
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• flag_ln_error1-24
• up_long_dome_temp
• down_long_dome_temp
• therm_volt
• lon
• flag_zero_cosine1-24
• logger_temp

E9 NIP affected by precipitation

Comparison of the dowelling hemishperic solar broadband flux estimated
from the unshaded PSP (down_short_hemisp) and that derived from the 
combination of the NIP (short_direct_normal) and shaded PSP
(down_short_diffuse_hemisp) showed significant differences (greater
than 100 W/m^2) at times on June 23, 1997. These differences appear
to be due to questionable data from the NIP (short_direct_normal) that
may have been caused by rainfall on that day. The NIP values recorded 
values as low as -15 W/m^2 in proximity to when the SMOS recorded 
precipitation. After the first precipitation event, the NIP appeared
to be recording lower values during sunnier periods that may be due 
to collected precipitation in the NIP affecting the amount of solar 
radiation reaching the sensor.

• flag_nighttime1-24
• lat
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• down_long_diffuse_hemisp
• hemisp_broadband
• logger_temp
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• up_long_case_temp
• diffuse_hemisp_broadband
• flag_ln_error1-24
• mfrsr_temp
• lon
• down_long_case_temp
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• flag_zero_cosine1-24
• logger_volt
• alt
• down_long_dome_temp
• diffuse_hemisp_narrowband
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• channel
• flag_zero_divisor1-24
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• therm_volt
• time_offset
• base_time
• hemisp_narrowband
• up_long_dome_temp

E4 NIP affected by precipitation

Comparison of the dowelling hemishperic solar broadband flux estimated
from the unshaded PSP (down_short_hemisp) and that derived from the 
combination of the NIP (short_direct_normal) and shaded PSP
(down_short_diffuse_hemisp) showed significant differences (greater
than 80 W/m^2) at times on June 23, 1997. These differences appear
to be due to questionable data from the NIP (short_direct_normal) that
may have been caused by rainfall on that day. The NIP values recorded 
values as low as -20 W/m^2 in proximity to when the SMOS recorded 
precipitation. After the first precipitation event, the NIP appeared
to be recording lower values during sunnier periods that may be due 
to collected precipitation in the NIP affecting the amount of solar 
radiation reaching the sensor.

• logger_volt
• diffuse_hemisp_narrowband
• alt
• hemisp_broadband
• flag_zero_divisor1-24
• flag_nighttime1-24
• base_time
• Direct Normal Broadband Irradiance(direct_norm_broadband)
• Radiation, shortwave, downwelling total hemispheric irradiance, 1-min avg(down_short_hemisp)
• up_long_case_temp
• hemisp_narrowband
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• channel
• Radiation, longwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_long_hemisp)
• Radiation, shortwave, direct normal irradiance, 1-min avg(short_direct_normal)
• lat
• time_offset
• down_long_diffuse_hemisp
• mfrsr_temp
• Radiation, shortwave, downwelling diffuse hemispheric irradiance, 1-min avg(down_short_diffuse_hemisp)
• down_long_case_temp
• diffuse_hemisp_broadband
• Radiation, shortwave, at 10-m height, upwelling hemispheric irrad., 1-min avg(up_short_hemisp)
• flag_ln_error1-24
• up_long_dome_temp
• down_long_dome_temp
• therm_volt
• lon
• flag_zero_cosine1-24
• logger_temp

SGP/SONDE - Dry bias in sonde RH

Vaisala has confirmed ARM findings of an apparent dry bias in the
relative humidity measured by RS-80H radiosondes.  The cause of
the dry bias is thought to be contamination of the humidity sensor
by volatile organic substances originating from some plastic parts
of the radiosonde.  The amount of contamination is a function of
the time between the date of sonde manufacture and its use.  All
RS-80H sondes manufactured before week 34 of 1998 will show this
bias.  After week 34 of 1998 Vaisala changed its packaging to
reduce, but not eliminate the contamination problem.

Starting with RS-80 radiosonde manufactured in late June 2000 Vaisala
enclosed the sensor boom in an inert plastic shield, thereby eliminating
the contamination that caused the dry bias.

Starting in May 2001 at the SGP, May 2002 at the TWP, and later 2002
at the NSA, ARM has moved to using RS-90 radiosondes.  These sondes
are not subject to the contaminatino that caused the dry bias.

Vaisala is in the process of developing an algorithm that can be 
used to estimate the correct RH from knowledge of the sonde age.
All of the ARM sounding data have sufficient metadata available
to apply the correction.

Additionally, ARM has funded a Science Team effort (Milosevich) to
develop a 'best' correction algorithm for the RS-80 radiosonde humidity
data.  When completed this algorithm will allow us to reprocess the
accumulated RS-80 data and produce a new data platform with what we
hope will be more accurate data.

• Raw data stream - documentation not supported

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Development raw data stream - documentation not supported

• Raw data stream - documentation not supported

• Development data stream - documentation not supported

• Development data stream - documentation not supported

• Development data stream - documentation not supported

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Development data stream - documentation not supported

• Raw data stream - documentation not supported

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Development data stream - documentation not supported

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Development data stream - documentation not supported

• Raw data stream - documentation not supported

• Development data stream - documentation not supported

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Development raw data stream - documentation not supported

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Development raw data stream - documentation not supported

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Development data stream - documentation not supported

• Development raw data stream - documentation not supported

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Development data stream - documentation not supported

• Development raw data stream - documentation not supported

• Development raw data stream - documentation not supported

• Development data stream - documentation not supported

• Development data stream - documentation not supported

• Raw data stream - documentation not supported

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Development raw data stream - documentation not supported

• Development raw data stream - documentation not supported

• Development data stream - documentation not supported

• Development data stream - documentation not supported

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Development data stream - documentation not supported

• Raw data stream - documentation not supported

• Raw data stream - documentation not supported

• Raw data stream - documentation not supported

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Raw data stream - documentation not supported

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Development raw data stream - documentation not supported

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Development data stream - documentation not supported

• Raw data stream - documentation not supported

• Raw data stream - documentation not supported

• Development data stream - documentation not supported

• Raw data stream - documentation not supported

• Development data stream - documentation not supported

• Development data stream - documentation not supported

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Development data stream - documentation not supported

• Raw data stream - documentation not supported

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Raw data stream - documentation not supported

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Development data stream - documentation not supported

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Humidity, relative(rh)
• Dewpoint Temperature(dp)

• Dewpoint Temperature(dp)
• Humidity, relative(rh)

• Raw data stream - documentation not supported

• Dewpoint Temperature(dp)
• Humidity, relative(rh)