Data Quality Reports for Session: 106453 User: ewestwater Completed: 07/10/2007


TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D041027.1NSA/MWRP/C1 - Missing datansamwrpC1.00, nsamwrpC1.b1
D070209.1NSA/MWRP/C1 - Incorrect surface measurementsnsamwrpC1.b1
D070221.1NSA/MWRP/C1 - 6-channel LWP retrieval has large negative valuesnsamwrpC1.b1
D070413.2NSA/MWRP/C1 - Missing datansamwrpC1.00, nsamwrpC1.b1, nsamwrprawC1.00
D070416.3NSA/MWRP/C1 - Incorrect surface measurementsnsamwrpC1.b1
D070511.2NSA/MWRP/C1 - Bias in 6-channel LWP retrievalnsamwrpC1.b1


DQRID : D041027.1
Start DateStart TimeEnd DateEnd Time
02/21/2004092402/23/20042239
10/06/2004000810/27/20041237
11/20/2004003811/22/20041852
04/10/2005000004/11/20051623
09/04/2005053009/06/20051858
01/06/2007000001/08/20072000
Subject:
NSA/MWRP/C1 - Missing data
DataStreams:nsamwrpC1.00, nsamwrpC1.b1
Description:
Data are missing and unrecoverable.
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)
  • Surface pressure at instrument(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)
  • Time offset from base_time(base_time)
  • Zenith-pointing infrared temperature at 10um(infraredTemperature)
  • Height of bins above ground level for the temperature, retrieved water vapor,
    and pressure profile(height)
  • north latitude for all the input platforms.(lat)
  • altitude above sea levelaltunits(alt)
  • Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater)
  • Interpolated dewpoint temperature(dewpointTemperature)
  • Solar azimuth referenced to the Central Facility.(azimuth)
  • Cloud-base height, from Micropulse LIDAR or Belfort LIDAR ceilometer(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 angle of Beam 0(elevation)
  • Lifting condensation level pressure(liftingCondensationLevelPres)
  • Level of free convection pressure(levelFreeConvectionPres)
  • Retrieved water vapor density(waterVaporDensity)
  • east longitude for all the input platforms.(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)
  • Surface air temperature for last 5 minutes of previous hour(temperature)
  • Surface absolute temperature at instrument(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)
  • Surface relative humidity at instrument(surfaceRelativeHumidity)
  • Interpolated water vapor mixing ratio(waterVaporMixingRatio)
  • Time offset from midnight of date of file. For CO data, this is identical to
    time_offset and is included for compatibility.(time)
  • Equilibrium level(equilibriumLevel)


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DQRID : D070209.1
Start DateStart TimeEnd DateEnd Time
02/08/2007040002/13/20071700
Subject:
NSA/MWRP/C1 - Incorrect surface measurements
DataStreams:nsamwrpC1.b1
Description:
Surface measurements are spiking and not comparing well with co-located METTWR4h.  
On 1/13 site operators cleaned a filter in the heater housing. This solved the problem
Measurements:nsamwrpC1.b1:
  • Surface pressure at instrument(surfacePressure)
  • Surface water vapor density at instrument(surfaceWaterVaporDensity)
  • Surface absolute temperature at instrument(surfaceTemperature)
  • Surface relative humidity at instrument(surfaceRelativeHumidity)


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DQRID : D070221.1
Start DateStart TimeEnd DateEnd Time
01/09/2007000001/27/20070000
Subject:
NSA/MWRP/C1 - 6-channel LWP retrieval has large negative values
DataStreams:nsamwrpC1.b1
Description:
The 6-channel LWP retrieval had large negative values (<-0.05 mm) betweem 01/09 and 01/27, 
reaching minimum values of -0.1 mm around 1/17. The reason for the drift was a drift in 
the 51.25-GHz channel. Somehow, after 1/27 the values returned normal.
Measurements:nsamwrpC1.b1:
  • Retrieved liquid water path(liquidWaterPath)
  • Microwave brightness temperature(brightnessTemperature)


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DQRID : D070413.2
Start DateStart TimeEnd DateEnd Time
02/28/2007230004/05/20070000
Subject:
NSA/MWRP/C1 - Missing data
DataStreams:nsamwrpC1.00, nsamwrpC1.b1, nsamwrprawC1.00
Description:
On 2/28 a software problem due to a failed calbration attempt caused the program not to 
start.
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)
  • Surface pressure at instrument(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)
  • Time offset from base_time(base_time)
  • Zenith-pointing infrared temperature at 10um(infraredTemperature)
  • Height of bins above ground level for the temperature, retrieved water vapor,
    and pressure profile(height)
  • north latitude for all the input platforms.(lat)
  • altitude above sea levelaltunits(alt)
  • Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater)
  • Interpolated dewpoint temperature(dewpointTemperature)
  • Solar azimuth referenced to the Central Facility.(azimuth)
  • Cloud-base height, from Micropulse LIDAR or Belfort LIDAR ceilometer(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 angle of Beam 0(elevation)
  • Lifting condensation level pressure(liftingCondensationLevelPres)
  • Level of free convection pressure(levelFreeConvectionPres)
  • Retrieved water vapor density(waterVaporDensity)
  • east longitude for all the input platforms.(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)
  • Surface air temperature for last 5 minutes of previous hour(temperature)
  • Surface absolute temperature at instrument(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)
  • Surface relative humidity at instrument(surfaceRelativeHumidity)
  • Interpolated water vapor mixing ratio(waterVaporMixingRatio)
  • Time offset from midnight of date of file. For CO data, this is identical to
    time_offset and is included for compatibility.(time)
  • Equilibrium level(equilibriumLevel)

nsamwrprawC1.00:
  • Raw data stream - documentation not supported(raw)


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DQRID : D070416.3
Start DateStart TimeEnd DateEnd Time
02/28/2007000003/29/20072300
Subject:
NSA/MWRP/C1 - Incorrect surface measurements
DataStreams:nsamwrpC1.b1
Description:
The MWRP surface temperature and pressure readings were in disagreement with those from 
other instruments. The possible cause of the disagreement was ice buildup around the 
sensors.  Readings returned to normal March 29.

The temperature readings were more affected. Since the readings are erratic, with large 
oscillations, it is not possible to correct them. Disregard the surface temperature and 
humidity readings during this time. The wrong readings will affect the first layer of the 
temperature and humidity profiles as well.
Measurements:nsamwrpC1.b1:
  • Surface pressure at instrument(surfacePressure)
  • Surface water vapor density at instrument(surfaceWaterVaporDensity)
  • Surface absolute temperature at instrument(surfaceTemperature)
  • Surface relative humidity at instrument(surfaceRelativeHumidity)


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DQRID : D070511.2
Start DateStart TimeEnd DateEnd Time
04/26/2007000006/03/20070000
Subject:
NSA/MWRP/C1 - Bias in 6-channel LWP retrieval
DataStreams:nsamwrpC1.b1
Description:
On 4/25 there was a slight shift in the calibration of the 51.25-GHz channel. This caused 
a bias in the 6-channel LWP retrieval that is now lower than the 2-channel retrieval
Measurements:nsamwrpC1.b1:
  • Retrieved liquid water path(liquidWaterPath)
  • Microwave brightness temperature(brightnessTemperature)


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