Data Quality Reports for Session: 119037 User: troyan Completed: 04/20/2009

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D080512.1NSA/MWR/C1 - Spikes in air temperature readingsnsamwrlosC1.b1, nsamwrtipC1.a1
D080611.1NSA/METTWR/C1 - 2m Datalogger Failednsamettwr4hC1.b1
D080612.1NSA/METTWR/C1 - CMH required Calibrationnsamettwr4hC1.b1
D080623.1NSA/MWR/C1 - Missing surface air temperature datansamwrlosC1.b1, nsamwrtipC1.a1
D080731.1NSA/METTWR/C1 - 2m level data incorrectnsamettwr4hC1.b1
D090114.2NSA/MWR/C1 - Incorrect brightness temperatures and retrievalsnsa5mwravgC1.c1, nsamwrlosC1.b1, nsamwrtipC1.a1


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)

Back To Table of Contents

DQRID : D080611.1
Start DateStart TimeEnd DateEnd Time
06/09/2008231906/11/20082222
Subject:
NSA/METTWR/C1 - 2m Datalogger Failed
DataStreams:nsamettwr4hC1.b1
Description:
The 2m temperature, wind speed, wind direction, and relative humidity were reporting the 
missing value (-9999).
Measurements:nsamettwr4hC1.b1:
  • Standard Deviation of 2m Vector Averaged Wind Direction(WD2M_SDU_WVT)
  • 2m Average Calculated Vapor Pressure(VP2M_AVG)
  • Standard Deviation of 2m Calculated Dew Point(DP2M_STD)
  • 2m Average Relative Humidity(RH2M_AVG)
  • Standard Deviation of 2m Relative Humidity(RH2M_STD)
  • 2m Average QLI Input Voltage(Volt2M_AVG)
  • 2m Vector Averaged Wind Speed(WS2M_U_WVT)
  • 2m Average Temperature(T2M_AVG)
  • Standard Deviation of 2m Calculated Vapor Pressure(VP2M_STD)
  • Standard Deviation of 2m Temperature(T2M_STD)
  • 2m Average QLI Reference Temperature(RefT2M_AVG)
  • 2m Average Calculated Dew Point(DP2M_AVG)
  • 2m Arithmetic Mean Wind Speed(WS2M_S_WVT)
  • 2m Vector Averaged Wind Direction(WD2M_DU_WVT)

Back To Table of Contents

DQRID : D080612.1
Start DateStart TimeEnd DateEnd Time
05/14/2008150006/20/20081420
Subject:
NSA/METTWR/C1 - CMH required Calibration
DataStreams:nsamettwr4hC1.b1
Description:
The Chilled Mirror was showing some signs of being out of calibration.  Temperatures were 
at times higher than co-located temp probes and the dew point temperature values at times 
were not consistent with co-located RH sensors.
Measurements:nsamettwr4hC1.b1:
  • Chilled Mirror Calculated Vapor Pressure(VPCMH)
  • Chilled Mirror Calculated Relative Humidity(CMHRH)
  • Chilled Mirror Dew Point(CMHDP)
  • Chilled Mirror Temperature(CMHTemp)
  • Chilled Mirror Calculated Saturation Vapor Pressure(SatVPCMH)

Back To Table of Contents

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)

Back To Table of Contents

DQRID : D080731.1
Start DateStart TimeEnd DateEnd Time
07/30/2008114108/03/20082359
Subject:
NSA/METTWR/C1 - 2m level data incorrect
DataStreams:nsamettwr4hC1.b1
Description:
The 2m data for temp, RH, dew point, wind speed wind direction & vapor pressure were 
incorrect.  The voltage values for the datalogger at that level were reporting as 60V with 
excursions to 100V.  These values should have damaged the logger at that level.  After an 
extended power outage on 08/04 the data all became reasonable. There is no explanation as 
to the cause of this failure.
Measurements:nsamettwr4hC1.b1:
  • Standard Deviation of 2m Vector Averaged Wind Direction(WD2M_SDU_WVT)
  • 2m Average Calculated Vapor Pressure(VP2M_AVG)
  • Standard Deviation of 2m Calculated Dew Point(DP2M_STD)
  • 2m Average Relative Humidity(RH2M_AVG)
  • Standard Deviation of 2m Relative Humidity(RH2M_STD)
  • 2m Average QLI Input Voltage(Volt2M_AVG)
  • 2m Vector Averaged Wind Speed(WS2M_U_WVT)
  • 2m Average Temperature(T2M_AVG)
  • Standard Deviation of 2m Calculated Vapor Pressure(VP2M_STD)
  • Standard Deviation of 2m Temperature(T2M_STD)
  • 2m Average QLI Reference Temperature(RefT2M_AVG)
  • 2m Average Calculated Dew Point(DP2M_AVG)
  • 2m Arithmetic Mean Wind Speed(WS2M_S_WVT)
  • 2m Vector Averaged Wind Direction(WD2M_DU_WVT)

Back To Table of Contents

DQRID : D090114.2
Start DateStart TimeEnd DateEnd Time
12/09/2008000012/09/20081800
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:
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • MWR column precipitable water vapor(vap)
  • Averaged total liquid water along LOS path(liq)
nsamwrtipC1.a1:
  • 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
  • Ambient temperature(tkair)
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
  • Total liquid water along zenith path using tip-derived brightness temperatures(liqtip)
nsamwrlosC1.b1:
  • Averaged total liquid water along LOS path(liq)
  • MWR column precipitable water vapor(vap)
  • Sky brightness temperature at 31.4 GHz(tbsky31)
  • Sky brightness temperature at 23.8 GHz(tbsky23)
  • Ambient temperature(tkair)

Back To Table of Contents


END OF DATA