Data Quality Reports for Session: 122311 User: dmfoper Completed: 09/04/2009

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D010504.2NSA/MWR/C2 - Missing datansamwrlosC2.b1, nsamwrtipC2.a1
D050830.1NSA/MWR/C2 - Thermally unstablensamwrlosC2.b1, nsamwrtipC2.a1
D050928.4NSA/MWR/C2 - New software version (4.15) installednsamwrlosC2.b1, nsamwrtipC2.a1
D060223.1NSA/MWR/C2 - Frosting/CondensationnsamwrC2.00, nsamwrlosC2.b1, nsamwrtipC2.a1
D070608.2NSA/TSI/C1 - camera lens coverednsatsicldmaskC1.a1, nsatsiskycoverC1.b1, nsatsiskyimageC1.a1
D070608.3NSA/TSI/C1 - shadowband misalignednsatsicldmaskC1.a1, nsatsiskycoverC1.b1, nsatsiskyimageC1.a1
D080811.1NSA/MWR/C2 - Occasional thermal instabilitynsa5mwravgC2.c1, nsamwrlosC2.b1, nsamwrtipC2.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
Subject:
NSA/MWR/C2 - Missing data
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
Data are missing and unrecoverable.
Measurements:nsamwrlosC2.b1:
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • base time(base_time)
  • lat(lat)
  • Mixer kinetic (physical) temperature(tkxc)
  • lon(lon)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Averaged total liquid water along LOS path(liq)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Ambient temperature(tkair)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 31.4 GHz sky signal(sky31)
  • Dummy altitude for Zeb(alt)
  • Sky Infra-Red Temperature(sky_ir_temp)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • 23.8 GHz sky signal(sky23)
  • 23.8 GHz Blackbody signal(bb23)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Time offset of tweaks from base_time(time_offset)
  • Blackbody kinetic temperature(tkbb)
  • MWR column precipitable water vapor(vap)
  • IR Brightness Temperature(ir_temp)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • (tknd)
  • 31.4 GHz blackbody(bb31)
nsamwrtipC2.a1:
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Actual elevation angle(actel)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • lon(lon)
  • 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
  • Ambient temperature(tkair)
  • Actual Azimuth(actaz)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • 31.4 GHz blackbody(bb31)
  • (tknd)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • Dummy altitude for Zeb(alt)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
  • 23.8 GHz Blackbody signal(bb23)
  • lat(lat)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • 31.4 GHz sky signal(tipsky31)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
  • Mixer kinetic (physical) temperature(tkxc)
  • 23.8 GHz sky signal(tipsky23)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Water on Teflon window (1=WET, 0=DRY)(wet_window)
  • Blackbody kinetic temperature(tkbb)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • base time(base_time)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Time offset of tweaks from base_time(time_offset)

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DQRID : D050830.1
Start DateStart TimeEnd DateEnd Time
08/12/2005120008/16/20052300
Subject:
NSA/MWR/C2 - Thermally unstable
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
Between 08/12 and 08/17 the instrument displayed some intermittent thermal instability. 
Measurement accuracy may be degraded during these time periods.

Periods of thermal instability may be identified by checking the black body temperature 
Tkbb. If Tkbb > 303K (30 C) the instrument is unstable.
Measurements:nsamwrlosC2.b1:
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Averaged total liquid water along LOS path(liq)
  • MWR column precipitable water vapor(vap)
nsamwrtipC2.a1:
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)

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DQRID : D050928.4
Start DateStart TimeEnd DateEnd Time
09/20/2002025109/15/20051722
Subject:
NSA/MWR/C2 - New software version (4.15) installed
DataStreams:nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
A problem began with the installation of MWR.EXE version 4.12 in September 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 9/15/2005. As a consequence of this 
upgrade, the tip curve frequency increased. The tip cycle time decreased from ~60s to ~50s.
Measurements:nsamwrlosC2.b1:
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • 23.8 GHz sky signal(sky23)
  • 23.8 GHz Blackbody signal(bb23)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Mixer kinetic (physical) temperature(tkxc)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Averaged total liquid water along LOS path(liq)
  • IR Brightness Temperature(ir_temp)
  • Blackbody kinetic temperature(tkbb)
  • MWR column precipitable water vapor(vap)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Ambient temperature(tkair)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • (tknd)
  • 31.4 GHz sky signal(sky31)
  • Sky Infra-Red Temperature(sky_ir_temp)
  • 31.4 GHz blackbody(bb31)
nsamwrtipC2.a1:
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • 31.4 GHz sky signal(tipsky31)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • 31.4 GHz goodness-of-fit coefficient(r31)
  • 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
  • Ambient temperature(tkair)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • 23.8 GHz sky signal(tipsky23)
  • Mixer kinetic (physical) temperature(tkxc)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • 31.4 GHz blackbody(bb31)
  • (tknd)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • Blackbody kinetic temperature(tkbb)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
  • 23.8 GHz Blackbody signal(bb23)
  • Temperature correction coefficient at 31.4 GHz(tc31)

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DQRID : D060223.1
Start DateStart TimeEnd DateEnd Time
02/22/2006000002/24/20062359
Subject:
NSA/MWR/C2 - Frosting/Condensation
DataStreams:nsamwrC2.00, nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
Doug reported freezing winds and ice accumulation on the MWR cover and radome. This may 
affect data quality and calibration. 
On 2/24 Doug attempted to slowly thaw the cover and clear the window.
From 2/22 to 2/24 the LWP and PWV reported by the MWR are near zero. These data are 
probably affected by the frost accumulated on the radiometer window.
Measurements:nsamwrlosC2.b1:
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • lon(lon)
  • 23.8 GHz sky signal(sky23)
  • Averaged total liquid water along LOS path(liq)
  • MWR column precipitable water vapor(vap)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • 31.4 GHz sky signal(sky31)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
nsamwrC2.00:
  • null(Raw data stream - documentation not supported)
nsamwrtipC2.a1:
  • 31.4 GHz sky signal(tipsky31)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • 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 nominal temperature at 23.8 GHz(tnd_nom23)
  • 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • 23.8 GHz sky signal(tipsky23)

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DQRID : D070608.2
Start DateStart TimeEnd DateEnd Time
04/13/2007213104/20/20071826
Subject:
NSA/TSI/C1 - camera lens covered
DataStreams:nsatsicldmaskC1.a1, nsatsiskycoverC1.b1, nsatsiskyimageC1.a1
Description:
The shadowband was not properly masking the sun so the camera lens was covered on 4/13 to 
prevent damage to the CCD. On 4/20, the mirror was blown off by a snow storm and the 
instrument was brought inside for repair. The mirror was replaced, the lens uncovered, and 
the instrument reinstalled.
Measurements:nsatsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)
nsatsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
nsatsiskycoverC1.b1:
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Relative \'strength\' of direct sun(sun.strength)
  • Pixel count: camera and sun strip mask(count.mask)
  • Sunshine meter(sunny)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: number total indeterminant(count.unknown)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number total thin(count.thin)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number total in sun circle(region.sun.count)
  • Pixel count: number below horizon in image(count.sub.horz)
  • Percentage thin cloud(percent.thin)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Pixel count: number total in zenith circle(region.zenith.count)

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DQRID : D070608.3
Start DateStart TimeEnd DateEnd Time
03/26/2007160604/13/20072130
Subject:
NSA/TSI/C1 - shadowband misaligned
DataStreams:nsatsicldmaskC1.a1, nsatsiskycoverC1.b1, nsatsiskyimageC1.a1
Description:
At several times during this period the shadowband did not mask the sun because the mirror 
was not properly secured. Attempts were made to align the mirror on 4/2, 4/3, and 4/10.
Measurements:nsatsiskyimageC1.a1:
  • JPG data stream - documentation not supported(JPEG data stream - documentation not yet available)
nsatsicldmaskC1.a1:
  • PNG data stream - documentation not supported(png)
nsatsiskycoverC1.b1:
  • Pixel count: number thin in horizon area(region.horizon.count.thin)
  • Relative \'strength\' of direct sun(sun.strength)
  • Pixel count: camera and sun strip mask(count.mask)
  • Pixel count: number opaque in horizon area(region.horizon.count.opaque)
  • Pixel count: number total in horizon area(region.horizon.count)
  • Pixel count: number total indeterminant(count.unknown)
  • Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
  • Pixel count: number total opaque(count.opaque)
  • Pixel count: number opaque in sun circle(region.sun.count.opaque)
  • Pixel count: number total thin(count.thin)
  • Pixel count: number total between horizon and processed circle(count.sub.proczen)
  • Pixel count: box, outside mirror area(count.box)
  • Pixel count: number total in processed circle(count.sky)
  • Pixel count: number total in sun circle(region.sun.count)
  • Pixel count: number below horizon in image(count.sub.horz)
  • Percentage thin cloud(percent.thin)
  • Percent opaque cloud(percent.opaque)
  • Pixel count: number thin in sun circle(region.sun.count.thin)
  • Pixel count: number thin in zenith circle(region.zenith.count.thin)
  • Pixel count: number total in zenith circle(region.zenith.count)

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DQRID : D080811.1
Start DateStart TimeEnd DateEnd Time
07/01/2008000007/15/20080000
Subject:
NSA/MWR/C2 - Occasional thermal instability
DataStreams:nsa5mwravgC2.c1, nsamwrlosC2.b1, nsamwrtipC2.a1
Description:
Between 7/1 and 7/15 the radiometer experienced a few days of thermal instability. From a 
review of the data it doesn't appear that the instability has had any major effect. It is 
not possible to quantify in detail the effect of the instability due to the lack of 
radiosonde sounding,  however users are cautioned that a higher uncertainty may be affecting 
these data.
Measurements:nsa5mwravgC2.c1:
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Averaged total liquid water along LOS path(liq)
  • MWR column precipitable water vapor(vap)
nsamwrlosC2.b1:
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Averaged total liquid water along LOS path(liq)
  • MWR column precipitable water vapor(vap)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
nsamwrtipC2.a1:
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • Temperature correction coefficient at 31.4 GHz(tc31)

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END OF DATA