Data Quality Reports for Session: 131747 User: kelly1ever Completed: 11/22/2010

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D010504.2NSA/MWR/C2 - Missing datansamwrlosC2.b1, nsamwrtipC2.a1
D080512.2NSA/MWR/C2 - Possible bias on measurementsnsamwrlosC2.b1, nsamwrtipC2.a1
D090417.1NSA/MWR/C1 - RFI screening testnsamwrlosC1.b1, nsamwrtipC1.a1
D090417.5NSA/MWR/C1 - High noise in 23.8-GHz channelnsamwrlosC1.b1, nsamwrtipC1.a1
D090611.1NSA/MWR/C1 - Intermittent air temperature readingsnsamwrlosC1.b1, nsamwrtipC1.a1
D090611.2NSA/MWR/C1 - Air temperature readings missingnsamwrlosC1.b1, nsamwrtipC1.a1
D100224.5NSA/MWR/C2 - Radiometer unstablensamwrlosC2.b1, nsamwrtipC2.a1
D100326.1NSA/MWR/C1 - Elevated noisensamwrlosC1.b1, nsamwrtipC1.a1
D100830.2NSA/MWR/C2 - Temperature instabilitynsamwrlosC2.b1, nsamwrtipC2.a1
D101025.1NSA/MWR/C1 - Missing datansamwrlosC1.b1, nsamwrtipC1.a1


DQRID : D010504.2
Start DateStart TimeEnd DateEnd Time
10/26/1999000311/02/19990008
11/09/1999000412/27/19990008
12/28/1999000401/08/20000008
01/11/2000000401/20/20000428
03/11/2000021803/22/20000449
04/16/2000153604/18/20000540
06/09/2000060506/12/20000408
09/28/2000003609/30/20000132
02/03/2001020802/05/20010014
06/23/2001000006/25/20011820
07/01/2001200007/04/20011745
07/15/2001180007/17/20011650
11/17/2001030011/28/20012332
01/21/2002222101/23/20020417
04/02/2002000004/03/20020151
04/15/2002232404/17/20020108
07/21/2002180007/23/20020448
12/18/2002221801/28/20032115
02/17/2003184202/25/20032044
09/22/2005193210/01/20051700
08/28/2006200004/15/20081519
11/10/2008190011/13/20082309
03/25/2009185903/28/20092033
10/22/2009071611/16/20091700
Subject:
NSA/MWR/C2 - Missing data
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
Data are missing and unrecoverable.
Measurements:nsamwrlosC2.b1:
  • Temperature, brightness, longwave(ir_temp)
  • tkxc
  • tc31
  • time_offset
  • bbn31
  • tc23
  • sky31
  • tnd31
  • alt
  • Total water vapor along LOS path(vap)
  • tkbb
  • tknd
  • bb31
  • base_time
  • tnd_nom23
  • bb23
  • Temperature, Sky Infra-Red(sky_ir_temp)
  • tkair
  • wet_window
  • sky23
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • lat
  • Total liquid water along LOS path(liq)
  • 31.4 GHz sky brightness temperature(tbsky31)
  • bbn23
  • lon
  • tnd_nom31
  • tnd23
nsamwrtipC2.a1:
  • tkbb
  • tbskytip31
  • wet_window
  • tnd23I
  • vaptip
  • lon
  • liqtip
  • alt
  • bb31
  • actaz
  • tc23
  • tipsky31
  • tbskytip23
  • tkair
  • bbn23
  • tnd_nom31
  • tknd
  • r23
  • tkxc
  • tnd23
  • bbn31
  • tipsky23
  • actel
  • lat
  • tnd31
  • tnd_nom23
  • tnd31I
  • r31
  • time_offset
  • base_time
  • bb23
  • tc31

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DQRID : D080512.2
Start DateStart TimeEnd DateEnd Time
04/15/2008150011/16/20091600
Subject:
NSA/MWR/C2 - Possible bias on measurements
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
This instrument was refurbished at the the vendor's facility in 2008 and then sent to the 
SGP for side-by-side comparison with another MWR. During the time the instrument was at 
the SGP, it was noticed that the 23.8-GHz measurements were slightly warmer than those 
from radiometer SN10 operating at the SGP Central Facility. A comparison with radiosonde 
measurements confirmed the slight change in the measurements.

An explanation of the bias and comparison with radiosonde measurements and radiometer SN 
10 is given in the mentor's monthly data  review  for the month of April 2008.

Since there aren't radiosondes at NSA.C2, it is difficult to work around this problem. 
Based on comparison at the SGP, the bias in the 23.8-GHz channel was quantified to be ~1.5 
K. Users can attempt to subtract this amount from the 23.8-GHz measurements. 
Alternatively, use the retrieved PWV and LWV keeping in mind that there is a possible overestimation 
of PWV of ~1 mm.

On 11/16/2009 after a hardware failure of the radiometer a spare radiometer (SN15) was 
installed at the site.
Measurements:nsamwrlosC2.b1:
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
nsamwrtipC2.a1:
  • tbskytip23

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DQRID : D090417.1
Start DateStart TimeEnd DateEnd Time
04/15/2009210004/15/20092300
04/16/2009171504/16/20092200
Subject:
NSA/MWR/C1 - RFI screening test
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
The instrument was covered with a shield to test the effect on the RF interference that is 
affecting the measurements since February. The test was performed on 4/15 and 4/16 for a 
few hours.
Measurements:nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Temperature, Sky Infra-Red(sky_ir_temp)
  • sky23
  • tkxc
  • Total water vapor along LOS path(vap)
  • tkbb
  • bbn23
  • tkair
  • bb23
  • sky31
  • tnd_nom31
  • Temperature, brightness, longwave(ir_temp)
  • bbn31
  • tnd23
  • tknd
  • tnd_nom23
  • bb31
  • wet_window
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tnd31
  • tc23
  • actel
  • tc31
  • actaz
nsamwrtipC1.a1:
  • tnd_nom23
  • bb31
  • tnd31I
  • liqtip
  • wet_window
  • bbn31
  • r31
  • tkair
  • tnd_nom31
  • tknd
  • tc23
  • r23
  • bbn23
  • tkxc
  • tnd23
  • tc31
  • actel
  • tkbb
  • tbskytip31
  • actaz
  • vaptip
  • bb23
  • tnd23I
  • tipsky31
  • tipsky23
  • tbskytip23
  • tnd31

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DQRID : D090417.5
Start DateStart TimeEnd DateEnd Time
02/13/2009000010/15/20091800
Subject:
NSA/MWR/C1 - High noise in 23.8-GHz channel
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
Starting approximately on February 13 the MWR experienced high level of noise in the 23.8 
GHz channel. The spikes became more prominent around Feb 17 and increased after that date 
as well. The cause of the interference was identified as the nearby MWRP on Oct 13 and 
the instruments were realigned.
Measurements:nsamwrlosC1.b1:
  • sky23
  • Total water vapor along LOS path(vap)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
nsamwrtipC1.a1:
  • vaptip
  • tipsky23
  • tbskytip23

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DQRID : D090611.1
Start DateStart TimeEnd DateEnd Time
05/23/2009000005/26/20091900
Subject:
NSA/MWR/C1 - Intermittent air temperature readings
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
Starting on 5/23 the air temperature readings (tkair) were intermittent and had negative 
spikes
Measurements:nsamwrlosC1.b1:
  • tkair
nsamwrtipC1.a1:
  • tkair

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DQRID : D090611.2
Start DateStart TimeEnd DateEnd Time
05/26/2009190006/10/20092300
Subject:
NSA/MWR/C1 - Air temperature readings missing
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
The air temperature readings (tkair) dropped on 5/26. The signal was restored on 6/10.
Measurements:nsamwrlosC1.b1:
  • tkair
nsamwrtipC1.a1:
  • tkair

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DQRID : D100224.5
Start DateStart TimeEnd DateEnd Time
01/06/2010000001/14/20102300
Subject:
NSA/MWR/C2 - Radiometer unstable
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
The radiometer had problems maintaining the thermal stabilization between 1/6 and 1/14.
Measurements:nsamwrlosC2.b1:
  • tkxc
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tnd23
  • tnd31
nsamwrtipC2.a1:
  • tbskytip23
  • tbskytip31
  • tnd23I
  • tnd31
  • vaptip
  • tkxc
  • tnd31I
  • liqtip
  • tnd23

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DQRID : D100326.1
Start DateStart TimeEnd DateEnd Time
02/10/2010000002/20/20102359
Subject:
NSA/MWR/C1 - Elevated noise
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
The data have high noise levels.
Measurements:nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • sky23
  • Total water vapor along LOS path(vap)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • sky31
nsamwrtipC1.a1:
  • vaptip
  • tipsky23
  • tipsky31
  • tbskytip31
  • tbskytip23

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DQRID : D100830.2
Start DateStart TimeEnd DateEnd Time
07/09/2010000007/12/20102300
07/28/2010000007/30/20102359
Subject:
NSA/MWR/C2 - Temperature instability
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
There was some temperature instability that could affect the calibration. Although the 
instability was brief users may find increased noise in the data or a slight deterioration 
of calibration accuracy during the indicated times.
Measurements:nsamwrlosC2.b1:
  • tc31
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • Total water vapor along LOS path(vap)
  • Total liquid water along LOS path(liq)
  • 31.4 GHz sky brightness temperature(tbsky31)
  • tnd_nom23
  • tc23
  • tnd_nom31
  • tnd23
  • tnd31
nsamwrtipC2.a1:
  • tc23
  • tbskytip23
  • tbskytip31
  • tnd23I
  • tnd_nom31
  • vaptip
  • tnd31
  • tnd_nom23
  • r23
  • tnd31I
  • r31
  • tc31
  • liqtip
  • tnd23

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DQRID : D101025.1
Start DateStart TimeEnd DateEnd Time
02/08/1998145902/11/19982254
02/13/1998135902/22/19982022
03/06/1998184603/14/19980200
03/15/1998232203/19/19980053
04/24/1998183804/29/19982340
05/03/1998120305/11/19982137
05/30/1998184006/01/19981858
06/09/1998233806/16/19982243
07/13/1998010307/16/19981816
07/18/1998190407/27/19982133
07/29/1998082808/03/19981901
08/05/1998002809/24/19982042
09/24/1998221011/11/19981830
11/11/1998183111/18/19981929
01/02/1999094701/04/19991756
10/11/1999235910/13/19992200
11/17/1999004311/19/19990033
01/28/2000192901/31/20001754
12/22/2000230001/09/20012233
03/28/2001235904/01/20010001
08/09/2001000008/13/20010000
08/15/2001000008/20/20010000
12/30/2001235901/01/20020000
02/14/2002215902/25/20022009
02/27/2002070003/02/20020100
04/25/2002185505/08/20022138
05/08/2002214405/23/20021925
08/19/2002165608/21/20021925
12/05/2002225312/08/20022120
06/29/2003163007/01/20032233
08/09/2003045908/11/20031807
02/10/2004084502/17/20040156
07/10/2004225507/12/20041918
08/05/2005195209/01/20051945
09/22/2005054509/27/20052357
02/25/2006081102/27/20061827
09/17/2009224109/20/20091734
09/27/2010025410/01/20101924
Subject:
NSA/MWR/C1 - Missing data
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
Data are missing and unrecoverable.
Measurements:nsamwrlosC1.b1:
  • 31.4 GHz sky brightness temperature(tbsky31)
  • Temperature, Sky Infra-Red(sky_ir_temp)
  • sky23
  • tkxc
  • Total water vapor along LOS path(vap)
  • alt
  • tkbb
  • bbn23
  • base_time
  • tkair
  • bb23
  • sky31
  • tnd_nom31
  • Temperature, brightness, longwave(ir_temp)
  • bbn31
  • lon
  • tnd23
  • tknd
  • tnd_nom23
  • bb31
  • time_offset
  • wet_window
  • lat
  • Total liquid water along LOS path(liq)
  • Radiation, longwave, brightness temperature, 23.8 GHz(tbsky23)
  • tnd31
  • tc23
  • actel
  • tc31
  • actaz
nsamwrtipC1.a1:
  • lat
  • tnd_nom23
  • bb31
  • tnd31I
  • liqtip
  • wet_window
  • bbn31
  • r31
  • tkair
  • tnd_nom31
  • tknd
  • lon
  • tc23
  • r23
  • bbn23
  • tkxc
  • tnd23
  • tc31
  • actel
  • tkbb
  • alt
  • tbskytip31
  • actaz
  • vaptip
  • bb23
  • tnd23I
  • tipsky31
  • time_offset
  • tipsky23
  • base_time
  • tbskytip23
  • tnd31

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END OF DATA