Data Quality Reports for Session: 119503 User: rutan Completed: 05/08/2009

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D000121.1SGP/MWR/B5 - wrong calibrationsgp5mwravgB5.c1, sgpmwrlosB5.00, sgpmwrlosB5.a1, sgpmwrlosB5.b1, sgpmwrtipB5.a1
D000606.1SGP/MWR/C1 - IRT removedsgpmwrlosC1.a1, sgpmwrlosC1.b1
D020905.3SGP/MWR/C1 - Reprocess: IRT insufficiently insulatedsgpmwrlosC1.a1, sgpmwrlosC1.b1
D030312.10SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperaturessgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpmwrlosC1.a1, sgpmwrlosC1.b1
D030312.4SGP/MWR/B5 - Intermittent Negative Sky Brightness TemperaturessgpmwrlosB5.a1, sgpmwrlosB5.b1
D030822.2SGP/MWR/B1 - min/max/delta values incorrectsgpmwrlosB1.b1
D030822.3SGP/MWR/B4 - min/max/delta values incorrectsgpmwrlosB4.b1
D030822.4SGP/MWR/B5 - min/max/delta values incorrectsgpmwrlosB5.b1
D040824.1SGP/MWR/C1 - Wet window flag "on" more frequently than expectedsgpmwrlosC1.a1, sgpmwrlosC1.b1
D080103.2SGP/MWR/C1 - Missing datasgpmwrlosC1.b1
D080701.2SGP/MWR/B4 - Missing datasgpmwrlosB4.b1, sgpmwrtipB4.a1
D080724.1SGP/MWR/B5 - Missing datasgpmwrlosB5.b1
D090202.4SGP/MWR/B1 - Missing datasgpmwrlosB1.b1
D980507.1SGP/MWR/C1 - IRT lens replacedsgpmwrlosC1.a1, sgpmwrlosC1.b1
D981204.1SGP/MWR/C1 - Erroneous internal temperaturesgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1
D990106.1SGP/MWR/B1/B4/B6/C1 - software changesgpmwrlosB1.a0, sgpmwrlosB1.a1, sgpmwrlosB4.a0, sgpmwrlosB4.a1, sgpmwrlosB6.a0,
sgpmwrlosB6.a1, sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipB1.a0, sgpmwrtipB4.a0, sgpmwrtipB6.a0
D990113.1SGP/MWR/B1/B4/B5/B6/C1 - software upgrade (version 3.27)sgpmwrlosB1.a1, sgpmwrlosB4.a1, sgpmwrlosB5.a1, sgpmwrlosB6.a1, sgpmwrlosC1.a1,
sgpmwrlosC1.b1, sgpmwrtipB1.a0, sgpmwrtipB4.a0, sgpmwrtipB5.a0, sgpmwrtipB6.a0
D990916.1SGP/MWR/B1/B4/B5/B6 - data file split at 23:59sgpmwrlosB1.a1, sgpmwrlosB1.b1, sgpmwrlosB4.a1, sgpmwrlosB4.b1, sgpmwrlosB5.a1,
sgpmwrlosB5.b1, sgpmwrlosB6.a1, sgpmwrlosB6.b1, sgpmwrtipB1.a1, sgpmwrtipB4.a1, sgpmwrtipB5.a1,
sgpmwrtipB6.a1
D991102.1SGP/MWR/B4 - power lines in field of viewsgp5mwravgB4.c1, sgpmwrlosB4.00, sgpmwrlosB4.a1, sgpmwrlosB4.b1, sgpmwrtipB4.00,
sgpmwrtipB4.a1
D991103.1SGP/MWR/B5 - repair & upgradesgp5mwravgB5.c1, sgpmwrlosB5.00, sgpmwrlosB5.a1, sgpmwrlosB5.b1, sgpmwrtipB5.00,
sgpmwrtipB5.a1


DQRID : D000121.1
Start DateStart TimeEnd DateEnd Time
10/27/1999171611/15/19991500
Subject:
SGP/MWR/B5 - wrong calibration
DataStreams:sgp5mwravgB5.c1, sgpmwrlosB5.00, sgpmwrlosB5.a1, sgpmwrlosB5.b1, sgpmwrtipB5.a1
Description:
An upgrade of the instrument by the manufacturer significantly changed its 
calibration and the configuration file was not updated with the new calibration
values when the instrument was returned to service.
Measurements:sgpmwrlosB5.00:
  • null(Raw data stream - documentation not supported)
sgpmwrlosB5.a1:
  • IR Brightness Temperature(ir_temp)
  • Time offset of tweaks from base_time(time_offset)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • MWR column precipitable water vapor(vap)
  • Dummy altitude for Zeb(alt)
  • Actual elevation angle(actel)
  • Actual Azimuth(actaz)
  • base time(base_time)
  • 31.4 GHz sky brightness temperature(31tbsky)
  • Averaged total liquid water along LOS path(liq)
  • lat(lat)
  • lon(lon)
  • 23.8 GHz sky brightness temperature(23tbsky)
sgpmwrtipB5.a1:
  • Actual Azimuth(actaz)
  • Blackbody kinetic temperature(tkbb)
  • 23.8 GHz Blackbody signal(bb23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Ambient temperature(tkair)
  • 23.8 GHz sky signal(tipsky23)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • lat(lat)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 31.4 GHz sky signal(tipsky31)
  • (tknd)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • 31.4 GHz blackbody(bb31)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Mixer kinetic (physical) temperature(tkxc)
  • lon(lon)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • Actual elevation angle(actel)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Dummy altitude for Zeb(alt)
sgp5mwravgB5.c1:
  • lon(lon)
  • Standard deviation about the mean for the 31.4 GHz sky brightness temperature(tbsky31_sdev)
  • base time(base_time)
  • Averaged total liquid water along LOS path(liq)
  • Fraction of data in averaging interval with water on Teflon window(water_flag_fraction)
  • IR Brightness Temperature(ir_temp)
  • Dummy altitude for Zeb(alt)
  • 31.4 GHz sky brightness temperature(31tbsky)
  • Standard deviation about the mean for the total water vapor amount(vap_sdev)
  • Standard deviation about the mean for the IR brightness temperature(ir_temp_sdev)
  • Time offset of tweaks from base_time(time_offset)
  • lat(lat)
  • 23.8 GHz sky brightness temperature(23tbsky)
  • Standard deviation about the mean for the total liquid water amount(liq_sdev)
  • Standard deviation about the mean for the 23.8 GHz sky brightness temperature(tbsky23_sdev)
  • Number of data points averaged for 23tbsky, 31tbsky, vap & liq(num_obs)
  • MWR column precipitable water vapor(vap)
sgpmwrlosB5.b1:
  • Time offset of tweaks from base_time(time_offset)
  • IR Brightness Temperature(ir_temp)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Averaged total liquid water along LOS path(liq)
  • lat(lat)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Dummy altitude for Zeb(alt)
  • base time(base_time)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • lon(lon)

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DQRID : D000606.1
Start DateStart TimeEnd DateEnd Time
10/19/1999223011/17/19992025
Subject:
SGP/MWR/C1 - IRT removed
DataStreams:sgpmwrlosC1.a1, sgpmwrlosC1.b1
Description:
There were no IRT data during this period because MWR #10, upon
which the IRT is mounted, was returned to the vendor for upgrades and
replaced with spare MWR #33 which does not have the mounting hardware
or the electronics to accept the IRT.
Measurements:sgpmwrlosC1.b1:
  • Sky Infra-Red Temperature(sky_ir_temp)
sgpmwrlosC1.a1:
  • Sky Infra-Red Temperature(sky_ir_temp)

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DQRID : D020905.3
Start DateStart TimeEnd DateEnd Time
01/19/1994000011/27/19981930
Subject:
SGP/MWR/C1 - Reprocess: IRT insufficiently insulated
DataStreams:sgpmwrlosC1.a1, sgpmwrlosC1.b1
Description:
The downwelling IRT was insufficiently insulated to maintain an internal 
reference temperature above 0 degrees C. Measurements of sky temperature were 
over-estimated when instrument was below freezing.

Data will be reprocessed, but users can correct data using the following correction 
factor:

If T_reference < -5?C, then

  IRT_corrected = (IRT_original - 32.993K)/0.87238

where T_reference can be estimated with the ambient temperature (e.g.
tkair)
Measurements:sgpmwrlosC1.b1:
  • Sky Infra-Red Temperature(sky_ir_temp)
sgpmwrlosC1.a1:
  • Sky Infra-Red Temperature(sky_ir_temp)

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DQRID : D030312.10
Start DateStart TimeEnd DateEnd Time
11/17/1999180007/31/20022034
Subject:
SGP/MWR/C1 - Intermittent Negative Sky Brightness Temperatures
DataStreams:sgp1mwravgC1.c1, sgp5mwravgC1.c1, sgpmwrlosC1.a1, sgpmwrlosC1.b1
Description:
Several related and recurring problems with the SGP MWRs have been
reported dating back to 1999.  These problems were due to the
occurrence of blackbody signals (in counts) that were half of those
expected. The symptoms included noisy data (especially at Purcell),
spikes in the data (especially at Vici), negative brightness
temperatures, and apparent loss of serial communication between the
computer and the radiometer, which results in a self-termination of the
MWR program (especially at the CF).

Because these all initially appeared to be hardware-related problems,
the instrument mentor and SGP site operations personnel (1) repeatedly
cleaned and replaced the fiber optic comm. components, (2) swapped
radiometers, (3) sent radiometers back to Radiometrics for evaluation
(which has not revealed any instrument problems), and (4) reconfigured
the computer's operating system.  Despite several attempts to isolate
and correct it, the problem persisted.

It became apparent that some component of the Windows98 configuration
conflicted with the DOS-based MWR program or affected the serial port
or the contents of the serial port buffer. This problem was finally
corrected by upgrading the MWR software with a new Windows-compatible
program.
Measurements:sgp5mwravgC1.c1:
  • Averaged total liquid water along LOS path(liq)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
sgpmwrlosC1.b1:
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Averaged total liquid water along LOS path(liq)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
sgp1mwravgC1.c1:
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Averaged total liquid water along LOS path(liq)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
sgpmwrlosC1.a1:
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Averaged total liquid water along LOS path(liq)

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DQRID : D030312.4
Start DateStart TimeEnd DateEnd Time
12/23/1999060007/10/20021700
Subject:
SGP/MWR/B5 - Intermittent Negative Sky Brightness Temperatures
DataStreams:sgpmwrlosB5.a1, sgpmwrlosB5.b1
Description:
Several related and recurring problems with the SGP MWRs have been
reported dating back to 1999.  These problems were due to the
occurrence of blackbody signals (in counts) that were half of those
expected. The symptoms included noisy data (especially at Purcell),
spikes in the data (especially at Vici), negative brightness
temperatures, and apparent loss of serial communication between the
computer and the radiometer, which results in a self-termination of the
MWR program (especially at the CF).

Because these all initially appeared to be hardware-related problems,
the instrument mentor and SGP site operations personnel (1) repeatedly
cleaned and replaced the fiber optic comm. components, (2) swapped
radiometers, (3) sent radiometers back to Radiometrics for evaluation
(which has not revealed any instrument problems), and (4) reconfigured
the computer's operating system.  Despite several attempts to isolate
and correct it, the problem persisted.

It became apparent that some component of the Windows98 configuration
conflicted with the DOS-based MWR program or affected the serial port
or the contents of the serial port buffer. This problem was finally
corrected by upgrading the MWR software with a new Windows-compatible
program.
Measurements:sgpmwrlosB5.a1:
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Averaged total liquid water along LOS path(liq)
sgpmwrlosB5.b1:
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Averaged total liquid water along LOS path(liq)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 23.8 GHz(tbsky23)

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DQRID : D030822.2
Start DateStart TimeEnd DateEnd Time
10/28/1998000001/24/20031659
Subject:
SGP/MWR/B1  - min/max/delta values incorrect
DataStreams:sgpmwrlosB1.b1
Description:
The values of valid_min, valid_max, and valid_delta for fields tkxc and tknd were 
incorrect. They should be 303, 333, and 0.5 K, respectively.
Measurements:sgpmwrlosB1.b1:
  • (tknd)
  • Mixer kinetic (physical) temperature(tkxc)

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DQRID : D030822.3
Start DateStart TimeEnd DateEnd Time
10/28/1998000002/10/20032359
Subject:
SGP/MWR/B4  - min/max/delta values incorrect
DataStreams:sgpmwrlosB4.b1
Description:
The values of valid_min, valid_max, and valid_delta for fields tkxc and tknd were 
incorrect. They should be 303, 333, and 0.5 K, respectively.
Measurements:sgpmwrlosB4.b1:
  • Mixer kinetic (physical) temperature(tkxc)
  • (tknd)

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DQRID : D030822.4
Start DateStart TimeEnd DateEnd Time
01/16/1998000002/10/20032359
Subject:
SGP/MWR/B5  - min/max/delta values incorrect
DataStreams:sgpmwrlosB5.b1
Description:
The values of valid_min, valid_max, and valid_delta for fields tkxc and tknd were 
incorrect. They should be 303, 333, and 0.5 K, respectively.
Measurements:sgpmwrlosB5.b1:
  • (tknd)
  • Mixer kinetic (physical) temperature(tkxc)

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DQRID : D040824.1
Start DateStart TimeEnd DateEnd Time
12/01/1999000012/21/19992359
11/10/2000000012/08/20002359
01/26/2001000003/05/20012359
12/18/2001000012/31/20012359
02/11/2002000002/28/20022359
02/19/2003000003/26/20032359
10/15/2003000011/03/20032359
Subject:
SGP/MWR/C1 - Wet window flag "on" more frequently than expected
DataStreams:sgpmwrlosC1.a1, sgpmwrlosC1.b1
Description:
The wet window flag was set "on" more frequently than expected during the time periods 
specified.  This indicates the heater has been running more than necessary.  In most 
instances the moisture sensitivity was adjusted at the end of these periods.
Measurements:sgpmwrlosC1.b1:
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Averaged total liquid water along LOS path(liq)
sgpmwrlosC1.a1:
  • Averaged total liquid water along LOS path(liq)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Sky brightness temperature at 23.8 GHz(tbsky23)

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DQRID : D080103.2
Start DateStart TimeEnd DateEnd Time
07/21/1993180907/23/19931541
08/07/1993214308/09/19931308
08/14/1993223308/16/19931300
08/29/1993120708/31/19931206
09/17/1993215809/20/19931311
10/02/1993161210/04/19931338
10/09/1993074110/11/19931319
11/12/1993120711/15/19931413
11/19/1993202711/21/19931957
12/14/1993230003/21/19941759
03/28/1994145903/30/19942225
05/16/1994190005/19/19942018
06/22/1994160007/11/19941859
07/16/1994030007/19/19942006
09/03/1994164709/05/19941341
09/09/1994232509/11/19941543
12/17/1994004912/19/19941441
01/05/1995000001/05/19952359
01/28/1995005401/30/19951443
04/01/1995000004/03/19951610
05/09/1995220005/11/19952350
06/24/1995090306/26/19950159
07/07/1995162507/10/19951409
07/19/1995174107/21/19951906
07/28/1995190007/31/19951918
08/22/1995161608/25/19952359
12/01/1995143401/11/19962214
01/12/1996200001/23/19962030
01/23/1996233202/08/19962359
08/06/1996000008/06/19962359
09/04/1996191009/08/19962359
09/14/1996070009/16/19961759
09/30/1996000009/30/19962359
12/01/1996000012/01/19962359
07/01/1997000007/01/19972359
02/20/1998233902/22/19980042
05/04/1998000005/04/19982359
07/18/1998033707/20/19981355
09/28/1998000009/28/19982359
10/10/1998235910/12/19981959
10/17/1998170510/19/19981535
12/25/1998223312/28/19982026
02/06/1999123502/08/19991652
03/13/1999204803/15/19992040
07/23/1999205907/26/19991408
12/04/1999080012/06/19991821
01/07/2000144602/02/20002224
05/24/2000145505/31/20001505
06/06/2000162006/14/20001451
09/01/2000220009/05/20001526
09/15/2000205709/18/20001339
09/23/2000123609/25/20001430
01/13/2001201101/16/20011647
02/24/2001023002/26/20011508
03/03/2001070103/05/20011546
03/10/2001070203/12/20011535
03/17/2001070203/19/20011422
03/24/2001070303/26/20011516
03/30/2001203804/02/20011423
05/05/2001104205/07/20011514
05/18/2001153405/21/20011451
06/22/2001220006/25/20011438
06/30/2001061607/02/20011435
07/28/2001194407/30/20011357
08/24/2001134808/27/20011751
09/07/2001184209/10/20011439
09/15/2001153309/17/20011459
10/13/2001003310/15/20011526
11/03/2001084011/05/20011613
11/10/2001055811/13/20011518
11/16/2001170111/19/20011706
12/21/2001215312/24/20011442
01/30/2002084502/11/20021632
03/02/2002033903/04/20021533
03/09/2002034003/11/20021621
06/26/2002163906/28/20022057
09/01/2002100209/03/20021332
12/21/2002112412/23/20021510
01/04/2003070301/06/20031529
08/09/2003003708/11/20031456
08/23/2003210108/25/20031456
10/12/2003202510/14/20031414
11/29/2003184012/01/20031502
01/24/2004074301/26/20041505
02/14/2004231602/17/20041520
09/04/2004025009/07/20041419
10/09/2004074510/11/20041739
10/16/2004225010/18/20041355
11/13/2004184911/15/20041521
12/03/2004194012/06/20041454
01/15/2005065201/18/20051446
01/22/2005144901/24/20051444
06/10/2005211806/13/20051603
08/05/2005170108/30/20052001
10/07/2005165811/16/20051945
11/18/2005180111/21/20051521
11/23/2005220111/25/20051550
11/26/2005010111/28/20051543
12/03/2005104312/05/20051559
01/14/2006182201/17/20061512
01/21/2006070801/23/20061515
02/03/2006190302/06/20061533
02/25/2006073002/27/20061420
07/01/2006222507/03/20061413
11/28/2006214312/01/20061911
06/09/2007115006/11/20071300
07/07/2007164207/09/20071304
08/03/2007160111/19/20072135
12/22/2007211212/24/20071504
05/25/2008181505/27/20081335
06/06/2008151206/09/20080238
Subject:
SGP/MWR/C1 - Missing data
DataStreams:sgpmwrlosC1.b1
Description:
Data are missing and unrecoverable.
Measurements:sgpmwrlosC1.b1:
  • 31.4 GHz sky signal(sky31)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Dummy altitude for Zeb(alt)
  • (tknd)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • 23.8 GHz sky signal(sky23)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • lon(lon)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Averaged total liquid water along LOS path(liq)
  • 31.4 GHz blackbody(bb31)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Blackbody kinetic temperature(tkbb)
  • Sky Infra-Red Temperature(sky_ir_temp)
  • MWR column precipitable water vapor(vap)
  • Ambient temperature(tkair)
  • 23.8 GHz Blackbody signal(bb23)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Mixer kinetic (physical) temperature(tkxc)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • lat(lat)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)

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DQRID : D080701.2
Start DateStart TimeEnd DateEnd Time
07/24/1999200007/26/19991651
07/30/1999210008/01/19991452
06/01/2000183906/05/20001800
07/03/2000223907/05/20001651
08/05/2000173608/07/20001857
08/09/2000130009/19/20001808
09/23/2000043609/25/20001257
12/31/2000164501/02/20011700
07/13/2001155007/16/20011515
01/31/2002004702/05/20021657
06/28/2002102307/09/20021650
12/14/2002070012/20/20021719
03/04/2003173503/07/20031708
06/06/2003004606/09/20031703
09/23/2003194809/25/20031842
10/09/2003222410/14/20031741
12/15/2003113012/18/20031716
05/23/2004200305/25/20041729
12/24/2004071812/27/20041435
06/18/2005152106/20/20051304
09/30/2005040510/03/20051359
10/07/2005231310/11/20051400
10/12/2005004110/14/20051318
10/14/2005134410/28/20051537
10/28/2005235610/31/20051756
11/05/2005021411/07/20051529
11/17/2005151706/11/20071855
05/27/2008042906/03/20081714
10/03/2008052010/06/20081205
10/31/2008141311/03/20081318
Subject:
SGP/MWR/B4 - Missing data
DataStreams:sgpmwrlosB4.b1, sgpmwrtipB4.a1
Description:
Data are missing and unrecoverable.
Measurements:sgpmwrlosB4.b1:
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Dummy altitude for Zeb(alt)
  • Time offset of tweaks from base_time(time_offset)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • lon(lon)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Blackbody kinetic temperature(tkbb)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • 31.4 GHz sky signal(sky31)
  • IR Brightness Temperature(ir_temp)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • 23.8 GHz Blackbody signal(bb23)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Mixer kinetic (physical) temperature(tkxc)
  • lat(lat)
  • Averaged total liquid water along LOS path(liq)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Sky Infra-Red Temperature(sky_ir_temp)
  • 31.4 GHz blackbody(bb31)
  • Ambient temperature(tkair)
  • (tknd)
  • 23.8 GHz sky signal(sky23)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • base time(base_time)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
sgpmwrtipB4.a1:
  • Mixer kinetic (physical) temperature(tkxc)
  • (tknd)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Blackbody kinetic temperature(tkbb)
  • Actual Azimuth(actaz)
  • 23.8 GHz sky signal(tipsky23)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • 31.4 GHz sky signal(tipsky31)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
  • lat(lat)
  • 23.8 GHz Blackbody signal(bb23)
  • Dummy altitude for Zeb(alt)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Actual elevation angle(actel)
  • Time offset of tweaks from base_time(time_offset)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • 31.4 GHz blackbody(bb31)
  • base time(base_time)
  • lon(lon)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • Ambient temperature(tkair)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)

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DQRID : D080724.1
Start DateStart TimeEnd DateEnd Time
03/28/1998195904/08/19981626
07/07/1998195907/15/19981823
07/18/1998190007/29/19981944
09/04/1998185909/09/19981848
12/15/1998215312/17/19981926
01/17/1999054901/19/19991829
06/23/1999142906/25/19991945
07/23/1999190007/27/19991537
07/27/1999175907/29/19992153
07/30/1999190008/01/19991453
09/11/1999061609/13/19991456
09/13/1999170009/15/19992130
09/17/1999130310/27/19991716
02/18/2000170002/21/20001522
09/01/2000200009/05/20001636
12/26/2000234301/02/20011713
01/12/2001190001/15/20011542
11/10/2001195711/12/20011629
01/27/2003141301/31/20031734
03/03/2003113003/05/20031904
06/14/2003222906/19/20031548
08/18/2003113108/20/20031700
10/08/2003070310/10/20031545
10/10/2003162410/15/20031622
10/15/2003170010/17/20031618
12/24/2003234112/26/20031741
02/16/2004113102/18/20041844
03/31/2004191705/07/20041703
09/13/2004113009/15/20041559
11/13/2004203211/15/20041757
11/24/2004183411/26/20041729
12/04/2004134412/06/20041846
12/25/2004182512/27/20041434
07/09/2005111407/11/20051313
10/24/2005104310/26/20051623
11/01/2005091111/09/20051946
11/10/2005035611/23/20051440
11/29/2005092412/06/20051749
12/06/2005210012/09/20051736
12/09/2005233312/12/20051429
08/21/2006180006/11/20071953
09/02/2007145109/07/20071540
09/14/2007154609/17/20071811
09/18/2007052509/26/20071320
10/05/2007033110/09/20071549
11/03/2007234511/05/20071620
11/10/2007000911/13/20071725
11/17/2007234511/19/20071411
11/21/2007190012/06/20072100
12/06/2007212012/13/20071836
01/19/2008102401/23/20081438
04/15/2008130404/17/20081312
04/19/2008011604/21/20081310
05/31/2008180906/04/20081915
10/03/2008084210/06/20081209
12/12/2008184712/15/20081441
Subject:
SGP/MWR/B5 - Missing data
DataStreams:sgpmwrlosB5.b1
Description:
Data are missing and unrecoverable.
Measurements:sgpmwrlosB5.b1:
  • base time(base_time)
  • Mixer kinetic (physical) temperature(tkxc)
  • Ambient temperature(tkair)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Time offset of tweaks from base_time(time_offset)
  • 23.8 GHz sky signal(sky23)
  • Blackbody kinetic temperature(tkbb)
  • 31.4 GHz blackbody(bb31)
  • MWR column precipitable water vapor(vap)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • (tknd)
  • IR Brightness Temperature(ir_temp)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Averaged total liquid water along LOS path(liq)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • lat(lat)
  • lon(lon)
  • 31.4 GHz sky signal(sky31)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Sky Infra-Red Temperature(sky_ir_temp)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • 23.8 GHz Blackbody signal(bb23)
  • Dummy altitude for Zeb(alt)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)

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DQRID : D090202.4
Start DateStart TimeEnd DateEnd Time
07/26/1999185908/01/19991449
09/05/1999030009/09/19991350
12/16/2000000012/18/20002202
01/14/2001124501/16/20011543
02/02/2001171702/05/20011627
07/13/2001205907/17/20011840
07/20/2001170007/22/20011930
01/20/2003025901/23/20031632
01/24/2003171303/06/20032033
05/13/2003024005/15/20031618
05/26/2003014205/29/20031608
06/07/2003022806/11/20031646
01/11/2004000101/13/20041924
02/15/2004085902/19/20041646
02/24/2004195004/01/20041909
04/21/2004212104/23/20041658
05/31/2005200006/02/20051446
09/17/2005194909/19/20051336
12/31/2005003301/03/20061420
02/06/2006090702/08/20061651
04/28/2006142105/01/20061411
07/22/2006055707/27/20061338
09/20/2006182406/19/20071632
11/26/2007173311/28/20072122
11/28/2007220301/30/20081804
07/09/2008030407/11/20081635
07/12/2008083607/14/20081427
12/12/2008134212/15/20081435
Subject:
SGP/MWR/B1 - Missing data
DataStreams:sgpmwrlosB1.b1
Description:
Data are missing and unrecoverable.
Measurements:sgpmwrlosB1.b1:
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Sky Infra-Red Temperature(sky_ir_temp)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Dummy altitude for Zeb(alt)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Ambient temperature(tkair)
  • IR Brightness Temperature(ir_temp)
  • 23.8 GHz sky signal(sky23)
  • Averaged total liquid water along LOS path(liq)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • lon(lon)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • lat(lat)
  • 31.4 GHz sky signal(sky31)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • (tknd)
  • Time offset of tweaks from base_time(time_offset)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • 31.4 GHz blackbody(bb31)
  • Mixer kinetic (physical) temperature(tkxc)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • base time(base_time)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Blackbody kinetic temperature(tkbb)
  • MWR column precipitable water vapor(vap)
  • 23.8 GHz Blackbody signal(bb23)

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DQRID : D980507.1
Start DateStart TimeEnd DateEnd Time
04/01/1998000004/30/19982042
Subject:
SGP/MWR/C1 - IRT lens replaced
DataStreams:sgpmwrlosC1.a1, sgpmwrlosC1.b1
Description:
During my recent trip to the SGP I noticed that the IRT was reading
too high (about 250 K for clear sky with less than 2 cm PWV).  The
anti-reflective coating on the lens appeared to have deteriorated
significantly.  Because I observed no change in the measurements
after cleaning the lens, I replaced it with the original lens which
had been saved as a spare.

The measured sky temperature fell to 232 K, which appeared more reasonable.

The next morning I realized that I had forgotten to clean the lens
after replacing it.  After cleaning the IR temperature fell from 219
to 213 K with about 1.2 cm PWV.  This appeared to be in agreement
with Martin Platt's radiometer which measures the same passband
(10 micrometers.)

Upon returning to Ames, I compared the IRT with AERI for April 1998.
It appears that at least as far back as 1 April the IRT data are bad.
Measurements:sgpmwrlosC1.b1:
  • Sky Infra-Red Temperature(sky_ir_temp)
sgpmwrlosC1.a1:
  • Sky Infra-Red Temperature(sky_ir_temp)

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DQRID : D981204.1
Start DateStart TimeEnd DateEnd Time
10/21/1998190011/12/19982200
Subject:
SGP/MWR/C1 - Erroneous internal temperature
DataStreams:sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipC1.a1
Description:
After the new internal temperature sensor was installed it was discovered
that the scaling resistor was incorrect.  (The 24.9 kohm 0.1% resistor
had accidently been replaced with a 24.0 kohm resistor when the analog
board was repaired by the manufacturer several years ago.)  A resistor
having the correct value was installed 981112.
Measurements:sgpmwrtipC1.a1:
  • Ambient temperature(tkair)
sgpmwrlosC1.b1:
  • Ambient temperature(tkair)
sgpmwrlosC1.a1:
  • Ambient temperature(tkair)

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DQRID : D990106.1
Start DateStart TimeEnd DateEnd Time
04/03/1995000010/12/19981900
Subject:
SGP/MWR/B1/B4/B6/C1 - software change
DataStreams:sgpmwrlosB1.a0, sgpmwrlosB1.a1, sgpmwrlosB4.a0, sgpmwrlosB4.a1, sgpmwrlosB6.a0,
sgpmwrlosB6.a1, sgpmwrlosC1.a1, sgpmwrlosC1.b1, sgpmwrtipB1.a0, sgpmwrtipB4.a0, sgpmwrtipB6.a0
Description:
The MWR operating software was changed on 12 October 1998 to provide additional 
functionality as described below. This change affects the format of the raw and ingested data. 
   
NEW FEATURES
1. Faster sampling rate
   
Standard line-of-sight (LOS) observations can now be acquired at 15-second intervals vs. 
20-second intervals previously. (The standard LOS cycle is comprised of one sky sample per 
blackbody sample and gain update.)
   
2. More flexible sampling strategy
   
Multiple sky observations can be acquired during a LOS cycle, up to 1024 per gain update. 
This permits sky samples to be acquired at intervals of 2.67 seconds for improved 
temporal resolution of cloud liquid water variations and better coordination with the millimeter 
cloud radar during IOPs.
   
3. Separation of zenith LOS observations from TIP data
   
When the radiometer is in TIP mode, the zenith LOS observations are now extracted, the PWV 
and LWP computed and reported separately in the output file. This eliminates the periods 
of missing LOS data during calibration checks/updates.
   
4. Automatic self-calibration
   
The software now permits the calibration to be updated at specified intervals or 
continuously. In the first case, LOS mode is automatically changed to TIP mode at user-specified 
intervals or whenever clear sky conditions occur, the tip data reduced, the calibration 
updated ,and the radiometer returned to LOS mode without operator intervention. In the 
second case, the radiometer is continuously is TIP mode until changed by the operator.
   
5. Graphical user display
   
The graphical display is comprised of a status display, a message display, a temperature 
plot, a plot of the retrieved PWV and LWP, and (in TIP mode) a plot of the latest tip 
curves.

Editor's Note: The SGP.C1 data were reprocessed in 2004 and enhancement #3 described above 
was applied to the data prior to Oct 1998.  The SGP.BF data are queued for reprocessing 
as well.
Measurements:sgpmwrtipB1.a0:
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
sgpmwrlosB1.a1:
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Ambient temperature(tkair)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • (tknd)
sgpmwrlosB4.a0:
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • (tknd)
  • Ambient temperature(tkair)
sgpmwrlosB6.a0:
  • (tknd)
  • Ambient temperature(tkair)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
sgpmwrlosC1.b1:
  • (tknd)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Ambient temperature(tkair)
sgpmwrtipB6.a0:
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
sgpmwrlosB1.a0:
  • (tknd)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Ambient temperature(tkair)
sgpmwrtipB4.a0:
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
sgpmwrlosC1.a1:
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • (tknd)
  • Ambient temperature(tkair)
sgpmwrlosB4.a1:
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Ambient temperature(tkair)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • (tknd)
sgpmwrlosB6.a1:
  • Ambient temperature(tkair)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • (tknd)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)

Back To Table of Contents

DQRID : D990113.1
Start DateStart TimeEnd DateEnd Time
07/21/1993140601/12/19992359
Subject:
SGP/MWR/B1/B4/B5/B6/C1 - software upgrade (version 3.27)
DataStreams:sgpmwrlosB1.a1, sgpmwrlosB4.a1, sgpmwrlosB5.a1, sgpmwrlosB6.a1, sgpmwrlosC1.a1,
sgpmwrlosC1.b1, sgpmwrtipB1.a0, sgpmwrtipB4.a0, sgpmwrtipB5.a0, sgpmwrtipB6.a0
Description:
At 00:00 GMT on 7 January version 3.27 of the MWR operating program was installed and made 
operational at the SGP central facility (C1).  No problems were noted over the next few 
days and the boundary facility MWRs (B1, B4, B5, B6) were upgraded at 20:00 GMT on 11 
January.  This version includes a beam width correction I developed as well as providing the 
capability to automatically level the elevation mirror (that is, to automatically detect 
and correct offsets in the elevation angle stepper motor position.)

On 12 January I discovered that the '486-based MWR computers at B1, B4 and B6 were not 
executing the system command to move and rename the data files so that the ARM data system 
could retrieve them.  Reducing the length of the storage arrays in the auto-leveling 
feature from 1000 to 250 resolved the problem.  This results in the auto-leveling being based 
on only 4 hours of clear sky data rather than 16 hours at B5 and C1.  This version of the 
program is 3.28. Version 3.27 (running at B5 and C1) can be installed if and when these 
computers are upgraded to Pentium-class machines.

The improvement in the quality of the tip curves resulting from the auto-leveling has been 
dramatic: differences in the brightness temperatures at 3 airmasses (19.5 and 160.5 
degrees) have been reduced from +/- 5 K to +/- 0.5 K.  The goodness-of-fit coefficient for 
the tip curves has improved from about 0.995 to over 0.998.  In order to take full 
advantage of this improvement to detect and reject cloudy tip curves, the minimum value of the 
goodness-of-fit coefficient for a valid tip curve has been increased from 0.995 to 0.998.

Editor's Note: The SGP.C1 data were reprocessed in 2004 to produce a common DOD for all 
time.  The 1996-1998 data reprocessing included beam width and mirror-leveling corrections, 
but the data prior to that range did not have these corrections applied.
Measurements:sgpmwrtipB1.a0:
  • 31.4 GHz sky signal(31tipsky)
  • 23.8 GHz sky signal(23tipsky)
sgpmwrlosB5.a1:
  • 31.4 GHz sky brightness temperature(31tbsky)
  • MWR column precipitable water vapor(vap)
  • Averaged total liquid water along LOS path(liq)
  • 23.8 GHz sky brightness temperature(23tbsky)
sgpmwrtipB5.a0:
  • 31.4 GHz sky signal(31tipsky)
  • 23.8 GHz sky signal(23tipsky)
sgpmwrlosB1.a1:
  • 23.8 GHz sky brightness temperature(23tbsky)
  • MWR column precipitable water vapor(vap)
  • Averaged total liquid water along LOS path(liq)
  • 31.4 GHz sky brightness temperature(31tbsky)
sgpmwrlosC1.b1:
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Averaged total liquid water along LOS path(liq)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
sgpmwrtipB6.a0:
  • 23.8 GHz sky signal(23tipsky)
  • 31.4 GHz sky signal(31tipsky)
sgpmwrtipB4.a0:
  • 31.4 GHz sky signal(31tipsky)
  • 23.8 GHz sky signal(23tipsky)
sgpmwrlosC1.a1:
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Averaged total liquid water along LOS path(liq)
sgpmwrlosB4.a1:
  • 31.4 GHz sky brightness temperature(31tbsky)
  • Averaged total liquid water along LOS path(liq)
  • 23.8 GHz sky brightness temperature(23tbsky)
  • MWR column precipitable water vapor(vap)
sgpmwrlosB6.a1:
  • Averaged total liquid water along LOS path(liq)
  • 31.4 GHz sky brightness temperature(31tbsky)
  • 23.8 GHz sky brightness temperature(23tbsky)
  • MWR column precipitable water vapor(vap)

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DQRID : D990916.1
Start DateStart TimeEnd DateEnd Time
10/29/1998000008/12/19992359
Subject:
SGP/MWR/B1/B4/B5/B6 - data file split at 23:59
DataStreams:sgpmwrlosB1.a1, sgpmwrlosB1.b1, sgpmwrlosB4.a1, sgpmwrlosB4.b1, sgpmwrlosB5.a1,
sgpmwrlosB5.b1, sgpmwrlosB6.a1, sgpmwrlosB6.b1, sgpmwrtipB1.a1, sgpmwrtipB4.a1, sgpmwrtipB5.a1,
sgpmwrtipB6.a1
Description:
A problem with the MWR operating software has been corrected.  However, several files were 
generated that contain one record of data collected at midnight but labeled with the 
previous day's date.
Measurements:sgpmwrlosB5.a1:
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Time offset of tweaks from base_time(time_offset)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • (tknd)
  • IR Brightness Temperature(ir_temp)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Ambient temperature(tkair)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • 31.4 GHz blackbody(bb31)
  • 23.8 GHz sky signal(sky23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • base time(base_time)
  • 23.8 GHz Blackbody signal(bb23)
  • Blackbody kinetic temperature(tkbb)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 31.4 GHz sky signal(sky31)
  • Averaged total liquid water along LOS path(liq)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Mixer kinetic (physical) temperature(tkxc)
sgpmwrlosB1.a1:
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • (tknd)
  • Averaged total liquid water along LOS path(liq)
  • Blackbody kinetic temperature(tkbb)
  • Time offset of tweaks from base_time(time_offset)
  • 31.4 GHz blackbody(bb31)
  • 23.8 GHz sky signal(sky23)
  • Ambient temperature(tkair)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Mixer kinetic (physical) temperature(tkxc)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • MWR column precipitable water vapor(vap)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • base time(base_time)
  • IR Brightness Temperature(ir_temp)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • 31.4 GHz sky signal(sky31)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • 23.8 GHz Blackbody signal(bb23)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
sgpmwrtipB6.a1:
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • 31.4 GHz sky signal(tipsky31)
  • Blackbody kinetic temperature(tkbb)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Actual Azimuth(actaz)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Time offset of tweaks from base_time(time_offset)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • (tknd)
  • 23.8 GHz Blackbody signal(bb23)
  • Mixer kinetic (physical) temperature(tkxc)
  • Ambient temperature(tkair)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • base time(base_time)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • 23.8 GHz sky signal(tipsky23)
  • Actual elevation angle(actel)
  • 31.4 GHz blackbody(bb31)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
sgpmwrlosB6.b1:
  • 23.8 GHz Blackbody signal(bb23)
  • MWR column precipitable water vapor(vap)
  • 31.4 GHz blackbody(bb31)
  • 31.4 GHz sky signal(sky31)
  • Averaged total liquid water along LOS path(liq)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • IR Brightness Temperature(ir_temp)
  • base time(base_time)
  • 23.8 GHz sky signal(sky23)
  • Time offset of tweaks from base_time(time_offset)
  • Mixer kinetic (physical) temperature(tkxc)
  • (tknd)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Ambient temperature(tkair)
  • Blackbody kinetic temperature(tkbb)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
sgpmwrlosB4.b1:
  • Time offset of tweaks from base_time(time_offset)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • MWR column precipitable water vapor(vap)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Mixer kinetic (physical) temperature(tkxc)
  • Averaged total liquid water along LOS path(liq)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • 31.4 GHz blackbody(bb31)
  • (tknd)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Blackbody kinetic temperature(tkbb)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 31.4 GHz sky signal(sky31)
  • 23.8 GHz Blackbody signal(bb23)
  • Ambient temperature(tkair)
  • 23.8 GHz sky signal(sky23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • IR Brightness Temperature(ir_temp)
  • base time(base_time)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
sgpmwrtipB4.a1:
  • 23.8 GHz sky signal(tipsky23)
  • 31.4 GHz sky signal(tipsky31)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Time offset of tweaks from base_time(time_offset)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Actual elevation angle(actel)
  • 31.4 GHz blackbody(bb31)
  • base time(base_time)
  • Mixer kinetic (physical) temperature(tkxc)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Blackbody kinetic temperature(tkbb)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • (tknd)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Actual Azimuth(actaz)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • 23.8 GHz Blackbody signal(bb23)
  • Ambient temperature(tkair)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
sgpmwrtipB5.a1:
  • 23.8 GHz Blackbody signal(bb23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Ambient temperature(tkair)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 31.4 GHz blackbody(bb31)
  • Time offset of tweaks from base_time(time_offset)
  • Actual Azimuth(actaz)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • 31.4 GHz sky signal(tipsky31)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Mixer kinetic (physical) temperature(tkxc)
  • Actual elevation angle(actel)
  • Blackbody kinetic temperature(tkbb)
  • 23.8 GHz sky signal(tipsky23)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • base time(base_time)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • (tknd)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
sgpmwrlosB1.b1:
  • Ambient temperature(tkair)
  • IR Brightness Temperature(ir_temp)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • 31.4 GHz blackbody(bb31)
  • Mixer kinetic (physical) temperature(tkxc)
  • Blackbody kinetic temperature(tkbb)
  • 31.4 GHz sky signal(sky31)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)
  • 23.8 GHz sky signal(sky23)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Averaged total liquid water along LOS path(liq)
  • (tknd)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • 23.8 GHz Blackbody signal(bb23)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • MWR column precipitable water vapor(vap)
sgpmwrtipB1.a1:
  • Actual elevation angle(actel)
  • 31.4 GHz blackbody(bb31)
  • Actual Azimuth(actaz)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Blackbody kinetic temperature(tkbb)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • 23.8 GHz Blackbody signal(bb23)
  • Mixer kinetic (physical) temperature(tkxc)
  • 23.8 GHz sky signal(tipsky23)
  • Time offset of tweaks from base_time(time_offset)
  • (tknd)
  • 31.4 GHz sky signal(tipsky31)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Ambient temperature(tkair)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • base time(base_time)
sgpmwrlosB4.a1:
  • IR Brightness Temperature(ir_temp)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Ambient temperature(tkair)
  • Averaged total liquid water along LOS path(liq)
  • 31.4 GHz blackbody(bb31)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Time offset of tweaks from base_time(time_offset)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Blackbody kinetic temperature(tkbb)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Mixer kinetic (physical) temperature(tkxc)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 23.8 GHz sky signal(sky23)
  • MWR column precipitable water vapor(vap)
  • base time(base_time)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • 31.4 GHz sky signal(sky31)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • (tknd)
  • 23.8 GHz Blackbody signal(bb23)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
sgpmwrlosB5.b1:
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Time offset of tweaks from base_time(time_offset)
  • IR Brightness Temperature(ir_temp)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • base time(base_time)
  • MWR column precipitable water vapor(vap)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Ambient temperature(tkair)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • 31.4 GHz sky signal(sky31)
  • Mixer kinetic (physical) temperature(tkxc)
  • Blackbody kinetic temperature(tkbb)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • 23.8 GHz sky signal(sky23)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Averaged total liquid water along LOS path(liq)
  • 31.4 GHz blackbody(bb31)
  • (tknd)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • 23.8 GHz Blackbody signal(bb23)
sgpmwrlosB6.a1:
  • IR Brightness Temperature(ir_temp)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Ambient temperature(tkair)
  • 23.8 GHz Blackbody signal(bb23)
  • Time offset of tweaks from base_time(time_offset)
  • Blackbody kinetic temperature(tkbb)
  • base time(base_time)
  • Averaged total liquid water along LOS path(liq)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • 31.4 GHz blackbody(bb31)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • 23.8 GHz sky signal(sky23)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • (tknd)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Mixer kinetic (physical) temperature(tkxc)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • 31.4 GHz sky signal(sky31)

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DQRID : D991102.1
Start DateStart TimeEnd DateEnd Time
03/05/1999000006/08/19991710
Subject:
SGP/MWR/B4 - power lines in field of view
DataStreams:sgp5mwravgB4.c1, sgpmwrlosB4.00, sgpmwrlosB4.a1, sgpmwrlosB4.b1, sgpmwrtipB4.00,
sgpmwrtipB4.a1
Description:
On 5 March 1999, the local power company installed transmission lines north 
of BF4 at an elevation angle of about 30 degrees from the MWR, in the field 
of view of tip scans. This affected the calibration of the instrument and 
the retrieved values of precipitable water vapor and liquid water path. 
On 8 June 1999 at 1710 GMT, the MWR was remotely rotated 90 degrees so the 
instrument would scan from east to west.
This reorientation has corrected the problem.
Measurements:sgpmwrlosB4.00:
  • null(Raw data stream - documentation not supported)
sgpmwrtipB4.00:
  • null(Raw data stream - documentation not supported)
sgpmwrlosB4.b1:
  • Averaged total liquid water along LOS path(liq)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
sgpmwrtipB4.a1:
  • 23.8 GHz Blackbody signal(bb23)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • 31.4 GHz blackbody(bb31)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • 23.8 GHz sky signal(tipsky23)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • 31.4 GHz sky signal(tipsky31)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
sgp5mwravgB4.c1:
  • 23.8 GHz sky brightness temperature(23tbsky)
  • Standard deviation about the mean for the 23.8 GHz sky brightness temperature(tbsky23_sdev)
  • Standard deviation about the mean for the total liquid water amount(liq_sdev)
  • MWR column precipitable water vapor(vap)
  • Standard deviation about the mean for the 31.4 GHz sky brightness temperature(tbsky31_sdev)
  • Averaged total liquid water along LOS path(liq)
  • Standard deviation about the mean for the total water vapor amount(vap_sdev)
  • 31.4 GHz sky brightness temperature(31tbsky)
sgpmwrlosB4.a1:
  • Averaged total liquid water along LOS path(liq)
  • MWR column precipitable water vapor(vap)

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DQRID : D991103.1
Start DateStart TimeEnd DateEnd Time
09/17/1999130310/27/19991716
Subject:
SGP/MWR/B5 - repair & upgrade
DataStreams:sgp5mwravgB5.c1, sgpmwrlosB5.00, sgpmwrlosB5.a1, sgpmwrlosB5.b1, sgpmwrtipB5.00,
sgpmwrtipB5.a1
Description:
The MWR was returned to the manufacturer for repair and upgrade.
Radiometric's service report follows:

Here are the repairs/modifications that were performed on
WVR12.

Found dew blower heater IC driver and AC relay failed.
Replaced both.
Replaced dew blower fan because of aging.

Updated R4 (2.4K), R9 (100 ohm) on digital board; makes
elevation motor sensor less sensitive to sunlight when
cover is off.

Installed 0.1 mfd caps on power supply 7840 voltage
regulators, pin 8 to 11. Makes PS more stable
  Set PS voltages 5.1 and 12.5 volts Set PS current limits
  with dummy load.

Installed 0.01 mfd to gnd,, 0.1 mfd across pins 1&2 on
AD524. RFI mitigation.

Installed ferrite chokes on +/- 15 volts at IF/video amp.
RFI mitigation.

Replaced cracked crossguide coupler. Undoubtedly the cause
of noise diode shifts.

Replaced INMET 3016 50 ohm load on IF port with 3016A

pseudo-noise figures: 23GHz= 5.19: 31GHz= 5.26 Temp. coefs.
23GHz -0.01: 31GHz 0.03.

Data collected during this period should be ignored as they 
are due to testing by the manufacturer and are unrepresentative 
of the site.
Measurements:sgpmwrlosB5.00:
  • null(Raw data stream - documentation not supported)
sgpmwrlosB5.a1:
  • IR Brightness Temperature(ir_temp)
  • Time offset of tweaks from base_time(time_offset)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • MWR column precipitable water vapor(vap)
  • Dummy altitude for Zeb(alt)
  • Actual elevation angle(actel)
  • Actual Azimuth(actaz)
  • base time(base_time)
  • 31.4 GHz sky brightness temperature(31tbsky)
  • Averaged total liquid water along LOS path(liq)
  • lat(lat)
  • lon(lon)
  • 23.8 GHz sky brightness temperature(23tbsky)
sgpmwrtipB5.00:
  • null(Raw data stream - documentation not supported)
sgpmwrtipB5.a1:
  • Actual Azimuth(actaz)
  • Blackbody kinetic temperature(tkbb)
  • 23.8 GHz Blackbody signal(bb23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Ambient temperature(tkair)
  • 23.8 GHz sky signal(tipsky23)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • lat(lat)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 31.4 GHz sky signal(tipsky31)
  • (tknd)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • 31.4 GHz blackbody(bb31)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Mixer kinetic (physical) temperature(tkxc)
  • lon(lon)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • Actual elevation angle(actel)
  • Time offset of tweaks from base_time(time_offset)
  • base time(base_time)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Dummy altitude for Zeb(alt)
sgp5mwravgB5.c1:
  • lon(lon)
  • Standard deviation about the mean for the 31.4 GHz sky brightness temperature(tbsky31_sdev)
  • base time(base_time)
  • Averaged total liquid water along LOS path(liq)
  • Fraction of data in averaging interval with water on Teflon window(water_flag_fraction)
  • Dummy altitude for Zeb(alt)
  • 31.4 GHz sky brightness temperature(31tbsky)
  • Standard deviation about the mean for the total water vapor amount(vap_sdev)
  • Time offset of tweaks from base_time(time_offset)
  • lat(lat)
  • 23.8 GHz sky brightness temperature(23tbsky)
  • Standard deviation about the mean for the total liquid water amount(liq_sdev)
  • Standard deviation about the mean for the 23.8 GHz sky brightness temperature(tbsky23_sdev)
  • Number of data points averaged for 23tbsky, 31tbsky, vap & liq(num_obs)
  • MWR column precipitable water vapor(vap)
sgpmwrlosB5.b1:
  • Time offset of tweaks from base_time(time_offset)
  • IR Brightness Temperature(ir_temp)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Averaged total liquid water along LOS path(liq)
  • lat(lat)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Dummy altitude for Zeb(alt)
  • base time(base_time)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • lon(lon)

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END OF DATA