Data Quality Reports for Session: 124132 User: jerome1fas Completed: 11/05/2009

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D010504.2NSA/MWR/C2 - Missing datansamwrlosC2.b1, nsamwrtipC2.a1
D041027.1NSA/MWRP/C1 - Missing datansamwrpC1.b1
D080409.2NSA/MWRP/C1 - Spare radiometer installednsamwrpC1.00, nsamwrpC1.b1, nsamwrprawC1.00
D080421.1NSA/MWRP/C1 - Radiometer in mixed scanning-zenith modensamwrpC1.b1
D080512.1NSA/MWR/C1 - Spikes in air temperature readingsnsamwrlosC1.b1, nsamwrtipC1.a1
D080523.3NSA/MWRP/C1 - Intermittent datansamwrpC1.00, nsamwrpC1.b1, nsamwrprawC1.00
D080523.4NSA/MWRP/C1 - Reprocess: LN2 calibrationnsamwrpC1.b1
D080523.5NSA/MWRP/C1 - Increased RF intereferencensamwrpC1.b1
D080623.1NSA/MWR/C1 - Missing surface air temperature 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
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 : D041027.1
Start DateStart TimeEnd DateEnd Time
02/21/2004092502/23/20042238
10/07/2004085910/27/20041237
11/20/2004003911/22/20041851
04/10/2005000004/11/20051622
09/04/2005053109/06/20051857
09/10/2005005209/12/20051830
09/21/2005180510/12/20052311
06/23/2006180008/08/20062250
08/11/2006235908/14/20061454
10/09/2006210110/11/20061733
01/05/2007235801/08/20072019
02/28/2007230903/05/20070027
07/13/2007183812/08/20070125
01/04/2008235701/06/20081903
02/16/2008181802/21/20080006
02/23/2008100502/26/20082320
03/12/2008014304/09/20081540
04/10/2008184004/14/20081657
04/18/2008225804/21/20081422
04/27/2008184604/29/20080525
05/01/2008032805/28/20082241
10/14/2008165902/13/20092234
Subject:
NSA/MWRP/C1 - Missing data
DataStreams:nsamwrpC1.b1
Description:
Data are missing and unrecoverable.
Measurements:nsamwrpC1.b1:
  • Expected root-mean-square error in liquid water path retrieval(liquidWaterPathRmsError)
  • Derived relative humidity(relativeHumidity)
  • Internal blackbody reference temperature(blackbodyTemperature)
  • Expected root-mean-square error in temperature retrieval(temperatureRmsError)
  • Retrieved liquid water path(liquidWaterPath)
  • Ambient surface pressure(surfacePressure)
  • atmospheric pressure at mean sea level and at tropopause (NGM250 predicted)(pressure)
  • Retrieved liquid water path using only 23.835 and 30.0 GHz(liquidWaterPath2)
  • Data quality flags(dataQualityFlags)
  • Surface water vapor density at instrument(surfaceWaterVaporDensity)
  • Derived virtual temperature(virtualTemperature)
  • Expected root-mean-square error in water vapor density retrieval(waterVaporDensityRmsError)
  • Equilibrium level pressure(equilibriumLevelPres)
  • base time(base_time)
  • Zenith-pointing infrared temperature at 10um(infraredTemperature)
  • Array of heights for the range gates(height)
  • lat(lat)
  • Dummy altitude for Zeb(alt)
  • Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater)
  • Interpolated dewpoint temperature(dewpointTemperature)
  • azimuth(azimuth)
  • Cloud base height(cloudBaseHeight)
  • Expected root-mean-square error in precipitable water retrieval using only
    23.835 and 30.0 GHz(totalPrecipitableWater2RmsError)
  • Expected root-mean-square error in precipitable water retrieval(totalPrecipitableWaterRmsError)
  • elevation(elevation)
  • Lifting condensation level pressure(liftingCondensationLevelPres)
  • Level of free convection pressure(levelFreeConvectionPres)
  • Retrieved water vapor density(waterVaporDensity)
  • lon(lon)
  • Retrieved total precipitable water vapor using only 23.835 and 30.0 GHz(totalPrecipitableWater2)
  • Microwave brightness temperature(brightnessTemperature)
  • Frequency(frequency)
  • Convective Available Potential Energy(cape)
  • Flag indicating moisture sensor status(wetWindowFlag)
  • Expected root-mean-square error in liquid water content retrieval(liquidWaterContentRmsError)
  • Lifting condensation level(liftingCondensationLevel)
  • Level of free convection(levelFreeConvection)
  • air temperature (NGM250 predicted)(temperature)
  • Ambient surface absolute temperature(surfaceTemperature)
  • Expected root-mean-square error in liquid water path retrieval using only 23.835
    and 30.0 GHz(liquidWaterPath2RmsError)
  • Retrieved cloud liquid water content(liquidWaterContent)
  • Time offset of tweaks from base_time(time_offset)
  • Ambient surface relative humidity(surfaceRelativeHumidity)
  • Interpolated water vapor mixing ratio(waterVaporMixingRatio)
  • time(time)
  • Equilibrium level(equilibriumLevel)

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DQRID : D080409.2
Start DateStart TimeEnd DateEnd Time
04/09/2008153905/01/20080300
Subject:
NSA/MWRP/C1 - Spare radiometer installed
DataStreams:nsamwrpC1.00, nsamwrpC1.b1, nsamwrprawC1.00
Description:
A spare radiometer was provided by Radiometrics while they try to fix our MWRP. The spare 
radiometer is of the same family as the one we have in Barrow and it will stay at the 
site until our radiometer is repaired.
A LN2 calibration will be performed next week.
Measurements:nsamwrpC1.00:
  • Raw data stream - documentation not supported(raw)
nsamwrpC1.b1:
  • Expected root-mean-square error in liquid water path retrieval(liquidWaterPathRmsError)
  • Derived relative humidity(relativeHumidity)
  • Internal blackbody reference temperature(blackbodyTemperature)
  • Expected root-mean-square error in temperature retrieval(temperatureRmsError)
  • Retrieved liquid water path(liquidWaterPath)
  • Ambient surface pressure(surfacePressure)
  • atmospheric pressure at mean sea level and at tropopause (NGM250 predicted)(pressure)
  • Retrieved liquid water path using only 23.835 and 30.0 GHz(liquidWaterPath2)
  • Data quality flags(dataQualityFlags)
  • Surface water vapor density at instrument(surfaceWaterVaporDensity)
  • Derived virtual temperature(virtualTemperature)
  • Expected root-mean-square error in water vapor density retrieval(waterVaporDensityRmsError)
  • Equilibrium level pressure(equilibriumLevelPres)
  • base time(base_time)
  • Zenith-pointing infrared temperature at 10um(infraredTemperature)
  • Array of heights for the range gates(height)
  • lat(lat)
  • Dummy altitude for Zeb(alt)
  • Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater)
  • Interpolated dewpoint temperature(dewpointTemperature)
  • azimuth(azimuth)
  • Cloud base height(cloudBaseHeight)
  • Expected root-mean-square error in precipitable water retrieval using only
    23.835 and 30.0 GHz(totalPrecipitableWater2RmsError)
  • Expected root-mean-square error in precipitable water retrieval(totalPrecipitableWaterRmsError)
  • elevation(elevation)
  • Lifting condensation level pressure(liftingCondensationLevelPres)
  • Level of free convection pressure(levelFreeConvectionPres)
  • Retrieved water vapor density(waterVaporDensity)
  • lon(lon)
  • Retrieved total precipitable water vapor using only 23.835 and 30.0 GHz(totalPrecipitableWater2)
  • Microwave brightness temperature(brightnessTemperature)
  • Frequency(frequency)
  • Convective Available Potential Energy(cape)
  • Flag indicating moisture sensor status(wetWindowFlag)
  • Expected root-mean-square error in liquid water content retrieval(liquidWaterContentRmsError)
  • Lifting condensation level(liftingCondensationLevel)
  • Level of free convection(levelFreeConvection)
  • air temperature (NGM250 predicted)(temperature)
  • Ambient surface absolute temperature(surfaceTemperature)
  • Expected root-mean-square error in liquid water path retrieval using only 23.835
    and 30.0 GHz(liquidWaterPath2RmsError)
  • Retrieved cloud liquid water content(liquidWaterContent)
  • Time offset of tweaks from base_time(time_offset)
  • Ambient surface relative humidity(surfaceRelativeHumidity)
  • Interpolated water vapor mixing ratio(waterVaporMixingRatio)
  • time(time)
  • Equilibrium level(equilibriumLevel)
nsamwrprawC1.00:
  • Raw data stream - documentation not supported(raw)

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DQRID : D080421.1
Start DateStart TimeEnd DateEnd Time
04/08/2008000004/21/20081420
Subject:
NSA/MWRP/C1 - Radiometer in mixed scanning-zenith mode
DataStreams:nsamwrpC1.b1
Description:
After installing the spare radiometer (D080409.2), the data started to be intermittent and 
the software froze several times. To test if the problem was due to the scanning 
procedure used with the other radiometer, the instrument was run with a zenith-only procedure at 
times and with the usual scanning procedure at restart. When restarted with the scanning 
procedure the software had problems, so it was decided to run the spare instrument only 
with the zenith-viewing mode until our instrument comes back.

The quality of the data should be unaffected. The only difference is that only data 
collected at 90 degree angle will be available until our instrument comes back.
Measurements:nsamwrpC1.b1:
  • Expected root-mean-square error in liquid water path retrieval(liquidWaterPathRmsError)
  • Derived relative humidity(relativeHumidity)
  • Internal blackbody reference temperature(blackbodyTemperature)
  • Expected root-mean-square error in temperature retrieval(temperatureRmsError)
  • Retrieved liquid water path(liquidWaterPath)
  • Ambient surface pressure(surfacePressure)
  • atmospheric pressure at mean sea level and at tropopause (NGM250 predicted)(pressure)
  • Retrieved liquid water path using only 23.835 and 30.0 GHz(liquidWaterPath2)
  • Data quality flags(dataQualityFlags)
  • Surface water vapor density at instrument(surfaceWaterVaporDensity)
  • Derived virtual temperature(virtualTemperature)
  • Expected root-mean-square error in water vapor density retrieval(waterVaporDensityRmsError)
  • Equilibrium level pressure(equilibriumLevelPres)
  • base time(base_time)
  • Zenith-pointing infrared temperature at 10um(infraredTemperature)
  • Array of heights for the range gates(height)
  • lat(lat)
  • Dummy altitude for Zeb(alt)
  • Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater)
  • Interpolated dewpoint temperature(dewpointTemperature)
  • azimuth(azimuth)
  • Cloud base height(cloudBaseHeight)
  • Expected root-mean-square error in precipitable water retrieval using only
    23.835 and 30.0 GHz(totalPrecipitableWater2RmsError)
  • Expected root-mean-square error in precipitable water retrieval(totalPrecipitableWaterRmsError)
  • elevation(elevation)
  • Lifting condensation level pressure(liftingCondensationLevelPres)
  • Level of free convection pressure(levelFreeConvectionPres)
  • Retrieved water vapor density(waterVaporDensity)
  • lon(lon)
  • Retrieved total precipitable water vapor using only 23.835 and 30.0 GHz(totalPrecipitableWater2)
  • Microwave brightness temperature(brightnessTemperature)
  • Frequency(frequency)
  • Convective Available Potential Energy(cape)
  • Flag indicating moisture sensor status(wetWindowFlag)
  • Expected root-mean-square error in liquid water content retrieval(liquidWaterContentRmsError)
  • Lifting condensation level(liftingCondensationLevel)
  • Level of free convection(levelFreeConvection)
  • air temperature (NGM250 predicted)(temperature)
  • Ambient surface absolute temperature(surfaceTemperature)
  • Expected root-mean-square error in liquid water path retrieval using only 23.835
    and 30.0 GHz(liquidWaterPath2RmsError)
  • Retrieved cloud liquid water content(liquidWaterContent)
  • Time offset of tweaks from base_time(time_offset)
  • Ambient surface relative humidity(surfaceRelativeHumidity)
  • Interpolated water vapor mixing ratio(waterVaporMixingRatio)
  • time(time)
  • Equilibrium level(equilibriumLevel)

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DQRID : D080512.1
Start DateStart TimeEnd DateEnd Time
04/02/2008000006/04/20082200
Subject:
NSA/MWR/C1 - Spikes in air temperature readings
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
During this month there are occasional negative spikes in the Tkair variable. The problem 
may be corrosion in the temperature sensor or the infiltration of water from melting snow.
The dewblower was replaced and a new sensor installed
Measurements:nsamwrlosC1.b1:
  • Ambient temperature(tkair)
nsamwrtipC1.a1:
  • Ambient temperature(tkair)

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DQRID : D080523.3
Start DateStart TimeEnd DateEnd Time
04/09/2008153905/01/20080300
Subject:
NSA/MWRP/C1 - Intermittent data
DataStreams:nsamwrpC1.00, nsamwrpC1.b1, nsamwrprawC1.00
Description:
A spare radiometer was installed a the site to substitute the malfunctioning radiometer 
(see DQRs D080409.2 and D080421.1). During this time the spare radiometer had problems 
starting and was stopping collection suddenly. Data during this time are very intermittent 
with large gaps.
Measurements:nsamwrpC1.00:
  • Raw data stream - documentation not supported(raw)
nsamwrpC1.b1:
  • Expected root-mean-square error in liquid water path retrieval(liquidWaterPathRmsError)
  • Derived relative humidity(relativeHumidity)
  • Internal blackbody reference temperature(blackbodyTemperature)
  • Expected root-mean-square error in temperature retrieval(temperatureRmsError)
  • Retrieved liquid water path(liquidWaterPath)
  • Ambient surface pressure(surfacePressure)
  • atmospheric pressure at mean sea level and at tropopause (NGM250 predicted)(pressure)
  • Retrieved liquid water path using only 23.835 and 30.0 GHz(liquidWaterPath2)
  • Data quality flags(dataQualityFlags)
  • Surface water vapor density at instrument(surfaceWaterVaporDensity)
  • Derived virtual temperature(virtualTemperature)
  • Expected root-mean-square error in water vapor density retrieval(waterVaporDensityRmsError)
  • Equilibrium level pressure(equilibriumLevelPres)
  • base time(base_time)
  • Zenith-pointing infrared temperature at 10um(infraredTemperature)
  • Array of heights for the range gates(height)
  • lat(lat)
  • Dummy altitude for Zeb(alt)
  • Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater)
  • Interpolated dewpoint temperature(dewpointTemperature)
  • azimuth(azimuth)
  • Cloud base height(cloudBaseHeight)
  • Expected root-mean-square error in precipitable water retrieval using only
    23.835 and 30.0 GHz(totalPrecipitableWater2RmsError)
  • Expected root-mean-square error in precipitable water retrieval(totalPrecipitableWaterRmsError)
  • elevation(elevation)
  • Lifting condensation level pressure(liftingCondensationLevelPres)
  • Level of free convection pressure(levelFreeConvectionPres)
  • Retrieved water vapor density(waterVaporDensity)
  • lon(lon)
  • Retrieved total precipitable water vapor using only 23.835 and 30.0 GHz(totalPrecipitableWater2)
  • Microwave brightness temperature(brightnessTemperature)
  • Frequency(frequency)
  • Convective Available Potential Energy(cape)
  • Flag indicating moisture sensor status(wetWindowFlag)
  • Expected root-mean-square error in liquid water content retrieval(liquidWaterContentRmsError)
  • Lifting condensation level(liftingCondensationLevel)
  • Level of free convection(levelFreeConvection)
  • air temperature (NGM250 predicted)(temperature)
  • Ambient surface absolute temperature(surfaceTemperature)
  • Expected root-mean-square error in liquid water path retrieval using only 23.835
    and 30.0 GHz(liquidWaterPath2RmsError)
  • Retrieved cloud liquid water content(liquidWaterContent)
  • Time offset of tweaks from base_time(time_offset)
  • Ambient surface relative humidity(surfaceRelativeHumidity)
  • Interpolated water vapor mixing ratio(waterVaporMixingRatio)
  • time(time)
  • Equilibrium level(equilibriumLevel)
nsamwrprawC1.00:
  • Raw data stream - documentation not supported(raw)

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DQRID : D080523.4
Start DateStart TimeEnd DateEnd Time
04/09/2008153905/01/20080300
Subject:
NSA/MWRP/C1 - Reprocess: LN2 calibration
DataStreams:nsamwrpC1.b1
Description:
On 4/9 a spare radiometer was installed at the site. On 4/18 a LN2 calibration was 
conducted. Upon examination of the data it appeared that the LN2 calibration was generally 
successful, however the 30-GHz channel was not calibrated properly.
New calibration coefficients for all K-band channels were derived and data for the whole 
month should be reprocessed with these newly derived coefficients. I will provide the new 
configuration file.

An explanation of the effects of the poor calibration is given in the Instrument Mentor 
Monthly Summary report. The poor calibration affected the LWP in particular. Re-calibration 
will correct the problem.
Measurements:nsamwrpC1.b1:
  • Derived relative humidity(relativeHumidity)
  • Retrieved liquid water path(liquidWaterPath)
  • Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater)
  • Retrieved liquid water path using only 23.835 and 30.0 GHz(liquidWaterPath2)
  • Retrieved total precipitable water vapor using only 23.835 and 30.0 GHz(totalPrecipitableWater2)
  • Microwave brightness temperature(brightnessTemperature)
  • Retrieved cloud liquid water content(liquidWaterContent)
  • Interpolated water vapor mixing ratio(waterVaporMixingRatio)

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DQRID : D080523.5
Start DateStart TimeEnd DateEnd Time
04/09/2008153905/01/20080300
Subject:
NSA/MWRP/C1 - Increased RF intereference
DataStreams:nsamwrpC1.b1
Description:
The spare radiometer experienced increased levels of RF interference. The interference is 
prominent on the 30-GHz channel and LWP retrievals that appear particularly noisy.
Measurements:nsamwrpC1.b1:
  • Retrieved liquid water path(liquidWaterPath)
  • Retrieved liquid water path using only 23.835 and 30.0 GHz(liquidWaterPath2)
  • Microwave brightness temperature(brightnessTemperature)

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DQRID : D080623.1
Start DateStart TimeEnd DateEnd Time
04/06/2008220006/20/20080200
Subject:
NSA/MWR/C1 - Missing surface air temperature data
DataStreams:nsamwrlosC1.b1, nsamwrtipC1.a1
Description:
Some wires in the dewblower were not correctly configured.
Measurements:nsamwrlosC1.b1:
  • Ambient temperature(tkair)
nsamwrtipC1.a1:
  • Ambient temperature(tkair)

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