Data Quality Reports for Session: 121807 User: dmfoper Completed: 08/20/2009

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D000121.1SGP/MWR/B5 - wrong calibrationsgp5mwravgB5.c1, sgpmwrlosB5.00, sgpmwrlosB5.a1, sgpmwrlosB5.b1, sgpmwrtipB5.a1
D050725.3SGP/MWR/B4 - Reprocess: Revised Retrieval Coefficientssgp5mwravgB4.c1, sgpmwrlosB4.a1, sgpmwrlosB4.b1, sgpmwrtipB4.a1, sgpqmemwrcolB4.c1
D050927.3SGP/MWR/B4 - New software version (4.15) installedsgpmwrlosB4.b1, sgpmwrtipB4.a1
D080701.2SGP/MWR/B4 - Missing datasgpmwrlosB4.b1, sgpmwrtipB4.a1
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


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 : D050725.3
Start DateStart TimeEnd DateEnd Time
04/15/2002230006/24/20052100
Subject:
SGP/MWR/B4 - Reprocess: Revised Retrieval Coefficients
DataStreams:sgp5mwravgB4.c1, sgpmwrlosB4.a1, sgpmwrlosB4.b1, sgpmwrtipB4.a1, sgpqmemwrcolB4.c1
Description:
IN THE BEGINNING (June 1992), the retrieval coefficients used to derive the precipitable 
water vapor (PWV) and liquid water path (LWP) from the MWR brightness temperatures were 
based on the Liebe and Layton (1987) water vapor and oxygen absorption model and the Grant 
(1957) liquid water absorption model.

Following the SHEBA experience, revised retrievals based on the more recent Rosenkranz 
(1998) water vapor and oxygen absorption models and the Liebe (1991) liquid waer absorption 
model were developed.  The Rosenkranz water vapor absorption model resulted a 2 percent 
increase in PWV relative to the earlier Liebe and Layton model.  The Liebe liquid water 
absorption model decreased the LWP by 10% relative to the Grant model.  However, the 
increased oxygen absorption caused a 0.02-0.03 mm (20-30 g/m2) reduction in LWP, which was 
particularly significant for low LWP conditions (i.e. thin clouds encountered at SHEBA).

Recently, it has been shown (Liljegren, Boukabara, Cady-Pereira, and Clough, TGARS v. 43, 
pp 1102-1108, 2005) that the half-width of the 22 GHz water vapor line from the HITRAN 
compilation, which is 5 percent smaller than the Liebe and Dillon (1969) half-width used in 
Rosenkranz (1998), provided a better fit to the microwave brightness temperature 
measurements at 5 frequencies in the range 22-30 GHz, and yielded more accurate retrievals. 
Accordingly, revised MWR retrieval coefficients have been developed using MONORTM, which 
utilizes the HITRAN compilation for its spectroscopic parameters.  These new retrievals 
provide 3 percent less PWV and 2.6 percent greater LWP than the previous retrievals based on 
Rosenkranz (1998).

Although the MWR data will be reprocessed to apply the new monortm-based retrievals, for 
most purposes it will be sufficient to correct the data using the following factors:

PWV_MONORTM = 0.9695 * PWV_ROSENKRANZ
LWP_MONORTM = 1.026  * LWP_ROSENKRANZ

The Rosenkranz-based retrieval coefficients became active at SGP.B4 20020415.2300.  The 
MONORTM-based retrieval coefficients became active at SGP.B4 20050624.2100.

Note: a reprocessing effort is already underway to apply the Rosenkranz-based retrieval 
coefficients to all MWR prior to April 2002.  An additional reprocessing task will be 
undertaken to apply the MONORTM retrieval to all MWR data when the first is completed. Read 
reprocessing comments in the netcdf file header carefully to ensure you are aware which 
retrieval is in play.
Measurements:sgpmwrlosB4.b1:
  • Averaged total liquid water along LOS path(liq)
  • MWR column precipitable water vapor(vap)
sgpmwrtipB4.a1:
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
sgpqmemwrcolB4.c1:
  • Ensemble average for MWR vapor in window centered about balloon release(mean_vap_mwr)
  • Ensemble average for MWR liquid in window centered about balloon release(mean_liq_mwr)
sgp5mwravgB4.c1:
  • Averaged total liquid water along LOS path(liq)
  • MWR column precipitable water vapor(vap)
sgpmwrlosB4.a1:
  • MWR column precipitable water vapor(vap)
  • Averaged total liquid water along LOS path(liq)

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DQRID : D050927.3
Start DateStart TimeEnd DateEnd Time
07/09/2002170009/13/20052121
Subject:
SGP/MWR/B4 - New software version (4.15) installed
DataStreams:sgpmwrlosB4.b1, sgpmwrtipB4.a1
Description:
A problem began with the installation of MWR.EXE version 4.12 in July 2002. The software 
had been upgraded from a "DOS" to a "Windows"-compiled program to address an earlier 
problem.  The software upgrade corrected the earlier problem but introduced a new one that 
caused line-of-sight observing cycles to be skipped, a 15% reduction in the number of tip 
curves, and saturation of CPU usage. Software versions 4.13 and 4.14 also produced these 
problems.

The new MWR software, version 4.15, was installed on 9/13/2005. As a consequence of this 
upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s.
Measurements:sgpmwrlosB4.b1:
  • Averaged total liquid water along LOS path(liq)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Sky Infra-Red Temperature(sky_ir_temp)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • 31.4 GHz blackbody(bb31)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Ambient temperature(tkair)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • (tknd)
  • Blackbody kinetic temperature(tkbb)
  • 23.8 GHz sky signal(sky23)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • MWR column precipitable water vapor(vap)
  • IR Brightness Temperature(ir_temp)
  • 31.4 GHz sky signal(sky31)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • 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)
sgpmwrtipB4.a1:
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
  • Mixer kinetic (physical) temperature(tkxc)
  • 23.8 GHz Blackbody signal(bb23)
  • (tknd)
  • 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)
  • Blackbody kinetic temperature(tkbb)
  • 23.8 GHz sky signal(tipsky23)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Ambient temperature(tkair)
  • 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)
  • 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 : 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 : 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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END OF DATA