DQRs for Session: 128781 User:theo1steenCompleted: 07-06-2010

Data Quality Reports for Session: 128781 User: theo1steen Completed: 07/06/2010

TABLE OF CONTENTS

DQR ID	Subject	Data Streams Affected
D041027.1	NSA/MWRP/C1 - Missing data	nsamwrpC1.b1
D060928.4	NSA/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry	nsasondewnpnC1.b1
D080115.1	NSA/MWRP/C1 - Radiometer thermally unstable	nsamwrpC1.b1
D080211.4	NSA/MWRP/C1 - Radiometer thermally unstable	nsamwrpC1.b1
D080319.1	NSA/MWRP/C1 - Hardware failure- Intermittent data	nsamwrpC1.b1
D080319.3	NSA/MWRP/C1 - Thermal instability- TKnd test	nsamwrpC1.b1
D080409.2	NSA/MWRP/C1 - Spare radiometer installed	nsamwrpC1.00, nsamwrpC1.b1, nsamwrprawC1.00
D080421.1	NSA/MWRP/C1 - Radiometer in mixed scanning-zenith mode	nsamwrpC1.b1
D080512.1	NSA/MWR/C1 - Spikes in air temperature readings	nsamwrlosC1.b1, nsamwrtipC1.a1
D080523.3	NSA/MWRP/C1 - Intermittent data	nsamwrpC1.00, nsamwrpC1.b1, nsamwrprawC1.00
D080523.4	NSA/MWRP/C1 - Reprocess: LN2 calibration	nsamwrpC1.b1
D080523.5	NSA/MWRP/C1 - Increased RF intereference	nsamwrpC1.b1
D080623.1	NSA/MWR/C1 - Missing surface air temperature data	nsamwrlosC1.b1, nsamwrtipC1.a1
D080710.2	NSA/MWRP/C1 - Reprocessed: LN2 calibrations applied	nsamwrpC1.b1
D080922.2	NSA/MWRP/C1 - V-band noise diode failure	nsamwrpC1.b1
D081107.1	NSA/MWRP/C1 - Incorrect V-band data	nsamwrpC1.b1
D090114.2	NSA/MWR/C1 - Incorrect brightness temperatures and retrievals	nsa5mwravgC1.c1, nsamwrlosC1.b1, nsamwrtipC1.a1

DQRID : D041027.1

Start Date	Start Time	End Date	End Time
02/21/2004	0925	02/23/2004	2238
10/07/2004	0859	10/27/2004	1237
11/20/2004	0039	11/22/2004	1851
04/10/2005	0000	04/11/2005	1622
09/04/2005	0531	09/06/2005	1857
09/10/2005	0052	09/12/2005	1830
09/21/2005	1805	10/12/2005	2311
06/23/2006	1800	08/08/2006	2250
08/11/2006	2359	08/14/2006	1454
10/09/2006	2101	10/11/2006	1733
01/05/2007	2358	01/08/2007	2019
02/28/2007	2309	03/05/2007	0027
07/13/2007	1838	12/08/2007	0125
01/04/2008	2357	01/06/2008	1903
02/16/2008	1818	02/21/2008	0006
02/23/2008	1005	02/26/2008	2320
03/12/2008	0143	04/09/2008	1540
04/10/2008	1840	04/14/2008	1657
04/18/2008	2258	04/21/2008	1422
04/27/2008	1846	04/29/2008	0525
05/01/2008	0328	05/28/2008	2241
10/14/2008	1659	02/13/2009	2234

Subject:	NSA/MWRP/C1 - Missing data
DataStreams:	nsamwrpC1.b1
Description:	Data are missing and unrecoverable.
Measurements:	nsamwrpC1.b1: Level of free convection pressure(levelFreeConvectionPres) Derived virtual temperature(virtualTemperature) Lifting condensation level pressure(liftingCondensationLevelPres) Equilibrium level pressure(equilibriumLevelPres) Data quality flags(dataQualityFlags) Expected root-mean-square error in precipitable water retrieval using only 23.835 and 30.0 GHz(totalPrecipitableWater2RmsError) Surface water vapor density at instrument(surfaceWaterVaporDensity) Derived relative humidity(relativeHumidity) Flag indicating moisture sensor status(wetWindowFlag) Retrieved cloud liquid water content(liquidWaterContent) Retrieved liquid water path using only 23.835 and 30.0 GHz(liquidWaterPath2) Equilibrium level(equilibriumLevel) Zenith-pointing infrared temperature at 10um(infraredTemperature) Convective Available Potential Energy(cape) time(time) Time offset of tweaks from base_time(time_offset) Expected root-mean-square error in liquid water path retrieval(liquidWaterPathRmsError) Expected root-mean-square error in water vapor density retrieval(waterVaporDensityRmsError) atmospheric pressure at mean sea level and at tropopause (NGM250 predicted)(pressure) Internal blackbody reference temperature(blackbodyTemperature) Microwave brightness temperature(brightnessTemperature) Retrieved liquid water path(liquidWaterPath) Interpolated water vapor mixing ratio(waterVaporMixingRatio) Dummy altitude for Zeb(alt) Ambient surface pressure(surfacePressure) Lifting condensation level(liftingCondensationLevel) Array of heights for the range gates(height) Level of free convection(levelFreeConvection) elevation(elevation) Expected root-mean-square error in liquid water content retrieval(liquidWaterContentRmsError) Expected root-mean-square error in liquid water path retrieval using only 23.835 and 30.0 GHz(liquidWaterPath2RmsError) Ambient surface relative humidity(surfaceRelativeHumidity) Interpolated dewpoint temperature(dewpointTemperature) Ambient surface absolute temperature(surfaceTemperature) Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater) Expected root-mean-square error in temperature retrieval(temperatureRmsError) Frequency(frequency) air temperature (NGM250 predicted)(temperature) base time(base_time) Retrieved water vapor density(waterVaporDensity) Expected root-mean-square error in precipitable water retrieval(totalPrecipitableWaterRmsError) lon(lon) Cloud base height(cloudBaseHeight) lat(lat) Retrieved total precipitable water vapor using only 23.835 and 30.0 GHz(totalPrecipitableWater2) azimuth(azimuth)

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DQRID : D060928.4

Start Date	Start Time	End Date	End Time
09/29/2006	0500	12/31/9999	2359

Subject:	NSA/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdry
DataStreams:	nsasondewnpnC1.b1
Description:	The output precision of the following variables was increased 20060929: alt changed from 1m to 0.1m dp changed from 0.1degC to 0.01degC pres changed from 0.1 hPa to 0.01 hPa RH changed from 1%RH to 0.01%RH tdry changed from .1degC to 0.01degC Note that the increase in precision does not necessarily imply an increase in accuracy. Users are cautioned to continue to use their best scientific judgement when using these or any other data.
Measurements:	nsasondewnpnC1.b1: Dummy altitude for Zeb(alt) Dry bulb temperature(tdry) Surface dew point temperature(dp) Retrieved pressure profile(pres) Relative humidity inside the instrument enclosure(rh)

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DQRID : D080115.1

Start Date	Start Time	End Date	End Time
12/21/2007	0000	12/23/2007	0000

Subject:	NSA/MWRP/C1 - Radiometer thermally unstable
DataStreams:	nsamwrpC1.b1
Description:	Between Dec 21 and Dec 23 the external temperature dropped to - 38 C. This caused a problem with the stability of the noise diode mount temperature and consequent problem with calibration.
Measurements:	nsamwrpC1.b1: Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater) Derived virtual temperature(virtualTemperature) air temperature (NGM250 predicted)(temperature) Retrieved water vapor density(waterVaporDensity) Derived relative humidity(relativeHumidity) Retrieved cloud liquid water content(liquidWaterContent) Microwave brightness temperature(brightnessTemperature) Retrieved liquid water path(liquidWaterPath) Interpolated water vapor mixing ratio(waterVaporMixingRatio) 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) Interpolated dewpoint temperature(dewpointTemperature)

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DQRID : D080211.4

Start Date	Start Time	End Date	End Time
01/01/2008	0000	01/31/2008	2300

Subject:	NSA/MWRP/C1 - Radiometer thermally unstable
DataStreams:	nsamwrpC1.b1
Description:	During January the radiometer was thermally unstable during several days of cold weather. The worst days of thermal instability were between Jan 12 and Jan 17.
Measurements:	nsamwrpC1.b1: Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater) Derived virtual temperature(virtualTemperature) air temperature (NGM250 predicted)(temperature) Retrieved water vapor density(waterVaporDensity) Retrieved cloud liquid water content(liquidWaterContent) Microwave brightness temperature(brightnessTemperature) Retrieved liquid water path(liquidWaterPath) Interpolated water vapor mixing ratio(waterVaporMixingRatio) 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)

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DQRID : D080319.1

Start Date	Start Time	End Date	End Time
01/29/2008	0000	03/12/2008	0000

Subject:	NSA/MWRP/C1 - Hardware failure- Intermittent data
DataStreams:	nsamwrpC1.b1
Description:	Data are intermittent during this time due to a failure of the analog board. The calibration of V-band data may have slightly drifted due to power outages.
Measurements:	nsamwrpC1.b1: Derived virtual temperature(virtualTemperature) air temperature (NGM250 predicted)(temperature) Derived relative humidity(relativeHumidity) Microwave brightness temperature(brightnessTemperature) Interpolated dewpoint temperature(dewpointTemperature)

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DQRID : D080319.3

Start Date	Start Time	End Date	End Time
02/01/2008	0000	03/12/2008	0000

Subject:	NSA/MWRP/C1 - Thermal instability- TKnd test
DataStreams:	nsamwrpC1.b1
Description:	During this time the radiometer was thermally unstable . The noise diode physical temperature had sudden drops of more than 5 degree in several ccasions between 2/1 and 2/11. On 2/12 the radiometer temperature set point was lowered of about 10 degree as a test. On 2/27 a new analog board was installed in the instrument. Data after 2/27 show a slight change in calibration.
Measurements:	nsamwrpC1.b1: Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater) Expected root-mean-square error in water vapor density retrieval(waterVaporDensityRmsError) Derived virtual temperature(virtualTemperature) air temperature (NGM250 predicted)(temperature) Retrieved water vapor density(waterVaporDensity) Derived relative humidity(relativeHumidity) Retrieved cloud liquid water content(liquidWaterContent) Microwave brightness temperature(brightnessTemperature) Retrieved liquid water path(liquidWaterPath) Interpolated water vapor mixing ratio(waterVaporMixingRatio) 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)

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DQRID : D080409.2

Start Date	Start Time	End Date	End Time
04/09/2008	1539	05/01/2008	0300

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:	nsamwrprawC1.00: Raw data stream - documentation not supported(raw) nsamwrpC1.b1: Level of free convection pressure(levelFreeConvectionPres) Derived virtual temperature(virtualTemperature) Lifting condensation level pressure(liftingCondensationLevelPres) Equilibrium level pressure(equilibriumLevelPres) Data quality flags(dataQualityFlags) Expected root-mean-square error in precipitable water retrieval using only 23.835 and 30.0 GHz(totalPrecipitableWater2RmsError) Surface water vapor density at instrument(surfaceWaterVaporDensity) Derived relative humidity(relativeHumidity) Flag indicating moisture sensor status(wetWindowFlag) Retrieved cloud liquid water content(liquidWaterContent) Retrieved liquid water path using only 23.835 and 30.0 GHz(liquidWaterPath2) Equilibrium level(equilibriumLevel) Zenith-pointing infrared temperature at 10um(infraredTemperature) Convective Available Potential Energy(cape) time(time) Time offset of tweaks from base_time(time_offset) Expected root-mean-square error in liquid water path retrieval(liquidWaterPathRmsError) Expected root-mean-square error in water vapor density retrieval(waterVaporDensityRmsError) atmospheric pressure at mean sea level and at tropopause (NGM250 predicted)(pressure) Internal blackbody reference temperature(blackbodyTemperature) Microwave brightness temperature(brightnessTemperature) Retrieved liquid water path(liquidWaterPath) Interpolated water vapor mixing ratio(waterVaporMixingRatio) Dummy altitude for Zeb(alt) Ambient surface pressure(surfacePressure) Lifting condensation level(liftingCondensationLevel) Array of heights for the range gates(height) Level of free convection(levelFreeConvection) elevation(elevation) Expected root-mean-square error in liquid water content retrieval(liquidWaterContentRmsError) Expected root-mean-square error in liquid water path retrieval using only 23.835 and 30.0 GHz(liquidWaterPath2RmsError) Ambient surface relative humidity(surfaceRelativeHumidity) Interpolated dewpoint temperature(dewpointTemperature) Ambient surface absolute temperature(surfaceTemperature) Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater) Expected root-mean-square error in temperature retrieval(temperatureRmsError) Frequency(frequency) air temperature (NGM250 predicted)(temperature) base time(base_time) Retrieved water vapor density(waterVaporDensity) Expected root-mean-square error in precipitable water retrieval(totalPrecipitableWaterRmsError) lon(lon) Cloud base height(cloudBaseHeight) lat(lat) Retrieved total precipitable water vapor using only 23.835 and 30.0 GHz(totalPrecipitableWater2) azimuth(azimuth) nsamwrpC1.00: Raw data stream - documentation not supported(raw)

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DQRID : D080421.1

Start Date	Start Time	End Date	End Time
04/08/2008	0000	04/21/2008	1420

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

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DQRID : D080512.1

Start Date	Start Time	End Date	End Time
04/02/2008	0000	06/04/2008	2200

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 Date	Start Time	End Date	End Time
04/09/2008	1539	05/01/2008	0300

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:	nsamwrprawC1.00: Raw data stream - documentation not supported(raw) nsamwrpC1.b1: Level of free convection pressure(levelFreeConvectionPres) Derived virtual temperature(virtualTemperature) Lifting condensation level pressure(liftingCondensationLevelPres) Equilibrium level pressure(equilibriumLevelPres) Data quality flags(dataQualityFlags) Expected root-mean-square error in precipitable water retrieval using only 23.835 and 30.0 GHz(totalPrecipitableWater2RmsError) Surface water vapor density at instrument(surfaceWaterVaporDensity) Derived relative humidity(relativeHumidity) Flag indicating moisture sensor status(wetWindowFlag) Retrieved cloud liquid water content(liquidWaterContent) Retrieved liquid water path using only 23.835 and 30.0 GHz(liquidWaterPath2) Equilibrium level(equilibriumLevel) Zenith-pointing infrared temperature at 10um(infraredTemperature) Convective Available Potential Energy(cape) time(time) Time offset of tweaks from base_time(time_offset) Expected root-mean-square error in liquid water path retrieval(liquidWaterPathRmsError) Expected root-mean-square error in water vapor density retrieval(waterVaporDensityRmsError) atmospheric pressure at mean sea level and at tropopause (NGM250 predicted)(pressure) Internal blackbody reference temperature(blackbodyTemperature) Microwave brightness temperature(brightnessTemperature) Retrieved liquid water path(liquidWaterPath) Interpolated water vapor mixing ratio(waterVaporMixingRatio) Dummy altitude for Zeb(alt) Ambient surface pressure(surfacePressure) Lifting condensation level(liftingCondensationLevel) Array of heights for the range gates(height) Level of free convection(levelFreeConvection) elevation(elevation) Expected root-mean-square error in liquid water content retrieval(liquidWaterContentRmsError) Expected root-mean-square error in liquid water path retrieval using only 23.835 and 30.0 GHz(liquidWaterPath2RmsError) Ambient surface relative humidity(surfaceRelativeHumidity) Interpolated dewpoint temperature(dewpointTemperature) Ambient surface absolute temperature(surfaceTemperature) Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater) Expected root-mean-square error in temperature retrieval(temperatureRmsError) Frequency(frequency) air temperature (NGM250 predicted)(temperature) base time(base_time) Retrieved water vapor density(waterVaporDensity) Expected root-mean-square error in precipitable water retrieval(totalPrecipitableWaterRmsError) lon(lon) Cloud base height(cloudBaseHeight) lat(lat) Retrieved total precipitable water vapor using only 23.835 and 30.0 GHz(totalPrecipitableWater2) azimuth(azimuth) nsamwrpC1.00: Raw data stream - documentation not supported(raw)

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DQRID : D080523.4

Start Date	Start Time	End Date	End Time
04/09/2008	1539	05/01/2008	0300

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: Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater) Derived relative humidity(relativeHumidity) Retrieved cloud liquid water content(liquidWaterContent) Microwave brightness temperature(brightnessTemperature) Retrieved liquid water path(liquidWaterPath) Interpolated water vapor mixing ratio(waterVaporMixingRatio) 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)

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DQRID : D080523.5

Start Date	Start Time	End Date	End Time
04/09/2008	1539	05/01/2008	0300

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: Microwave brightness temperature(brightnessTemperature) Retrieved liquid water path(liquidWaterPath) Retrieved liquid water path using only 23.835 and 30.0 GHz(liquidWaterPath2)

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DQRID : D080623.1

Start Date	Start Time	End Date	End Time
04/06/2008	2200	06/20/2008	0200

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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DQRID : D080710.2

Start Date	Start Time	End Date	End Time
07/01/2008	0000	07/18/2008	1950

Subject:	NSA/MWRP/C1 - Reprocessed: LN2 calibrations applied
DataStreams:	nsamwrpC1.b1
Description:	The V-band measurements were incorrect. The quantities affected were the temperature and humidity profiles. The instrument was re-calibrated on July 18. The new calibrations have been applied to the data for this time period. The reprocessed data were archived in January 2009.
Measurements:	nsamwrpC1.b1: Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater) Derived virtual temperature(virtualTemperature) air temperature (NGM250 predicted)(temperature) Retrieved water vapor density(waterVaporDensity) Derived relative humidity(relativeHumidity) Retrieved cloud liquid water content(liquidWaterContent) Microwave brightness temperature(brightnessTemperature) Retrieved liquid water path(liquidWaterPath) Interpolated water vapor mixing ratio(waterVaporMixingRatio) 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) Interpolated dewpoint temperature(dewpointTemperature)

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DQRID : D080922.2

Start Date	Start Time	End Date	End Time
08/05/2008	0000	10/14/2008	1700

Subject:	NSA/MWRP/C1 - V-band noise diode failure
DataStreams:	nsamwrpC1.b1
Description:	The V-band noise diode is showing signs of instability. Starting about August 5 the comparison of brightness temperatures with model showed an increased divergence resulting from a downward trend in the brightness temperatures of frequencies > 50 GHz. Disregard brightness temperatures and retrieved products associated with the V-band channels. These include all profiles. Integrated water vapor and liquid water path are not affected.
Measurements:	nsamwrpC1.b1: Level of free convection pressure(levelFreeConvectionPres) Lifting condensation level(liftingCondensationLevel) Derived virtual temperature(virtualTemperature) Lifting condensation level pressure(liftingCondensationLevelPres) air temperature (NGM250 predicted)(temperature) Level of free convection(levelFreeConvection) Retrieved water vapor density(waterVaporDensity) Derived relative humidity(relativeHumidity) Microwave brightness temperature(brightnessTemperature) Interpolated water vapor mixing ratio(waterVaporMixingRatio) Interpolated dewpoint temperature(dewpointTemperature)

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DQRID : D081107.1

Start Date	Start Time	End Date	End Time
05/28/2008	2200	06/30/2008	2359

Subject:	NSA/MWRP/C1 - Incorrect V-band data
DataStreams:	nsamwrpC1.b1
Description:	The V-band channels show a drift during this time.
Measurements:	nsamwrpC1.b1: Level of free convection pressure(levelFreeConvectionPres) Lifting condensation level(liftingCondensationLevel) Derived virtual temperature(virtualTemperature) Lifting condensation level pressure(liftingCondensationLevelPres) air temperature (NGM250 predicted)(temperature) Level of free convection(levelFreeConvection) Retrieved water vapor density(waterVaporDensity) Derived relative humidity(relativeHumidity) Retrieved cloud liquid water content(liquidWaterContent) Microwave brightness temperature(brightnessTemperature) Interpolated water vapor mixing ratio(waterVaporMixingRatio)

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DQRID : D090114.2

Start Date	Start Time	End Date	End Time
12/09/2008	0000	12/09/2008	1800

Subject:	NSA/MWR/C1 - Incorrect brightness temperatures and retrievals
DataStreams:	nsa5mwravgC1.c1, nsamwrlosC1.b1, nsamwrtipC1.a1
Description:	The brightness temperatures and retrieved PWV and LWP show a sudden jump and have values that are too high. The suddenly jump back to normal at around 1800 UTC. All other parameters seem reasonable so the cause of the jump may just be due to accumulation of either snow or melting ice on the radome.
Measurements:	nsa5mwravgC1.c1: MWR column precipitable water vapor(vap) Averaged total liquid water along LOS path(liq) Sky brightness temperature at 23.8 GHz(tbsky23) Sky brightness temperature at 31.4 GHz(tbsky31) nsamwrlosC1.b1: Sky brightness temperature at 31.4 GHz(tbsky31) Averaged total liquid water along LOS path(liq) Sky brightness temperature at 23.8 GHz(tbsky23) MWR column precipitable water vapor(vap) Ambient temperature(tkair) nsamwrtipC1.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) 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)

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