Data Quality Reports for Session: 105398 User: wlin Completed: 04/25/2007

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D050331.3PYE/MPL/M1 - wrong temperature calibrationpyemplM1.a1
D050902.2PYE/MWRP/M1 - Bias in Ground Relative Humidity MeasurementpyemwrpM1.00, pyemwrpM1.b1
D060317.1PYE/MPL/M1 - Erroneous temperaturespyemplM1.a1


DQRID : D050331.3
Start DateStart TimeEnd DateEnd Time
02/22/2005000005/05/20052359
Subject:
PYE/MPL/M1 - wrong temperature calibration
DataStreams:pyemplM1.a1
Description:
Wrong calibration coefficients were applied to the temperature values.  These are 
engineering housekeeping data only.  The scientifically relevant measurements were unaffected.
Measurements:pyemplM1.a1:
  • Laser temperature(laser_temp)
  • Filter temperature(filter_temp)
  • Detector temperature(detector_temp)
  • Instrument temperature(instrument_temp)

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DQRID : D050902.2
Start DateStart TimeEnd DateEnd Time
06/17/2005000009/03/20050000
Subject:
PYE/MWRP/M1 - Bias in Ground Relative Humidity Measurement
DataStreams:pyemwrpM1.00, pyemwrpM1.b1
Description:
On June 17 2005, the MWRP was re-installed at PYE after the Super Blower was replaced by 
the old style dew blower. The relative humidity ground sensor in the dew blower is not as 
accurate. This resulted in a negative relative humidity bias of about 5.9 %. In other 
words the MWRP sensor was underestimating the relative humidity. The bias was determined by 
comparing MWRP measurements with SMET and radiosonde measurements. The MP.cfg file for 
the MWRP was changed to reflect this bias on 09/02/2005 and will take effect on 09/03/2005 
0000 GMT
Measurements:pyemwrpM1.b1:
  • Surface water vapor density at instrument(surfaceWaterVaporDensity)
  • Surface relative humidity at instrument(surfaceRelativeHumidity)
pyemwrpM1.00:
  • Raw data stream - documentation not supported(raw)

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DQRID : D060317.1
Start DateStart TimeEnd DateEnd Time
02/22/2005000003/15/20052359
Subject:
PYE/MPL/M1 - Erroneous temperatures
DataStreams:pyemplM1.a1
Description:
The temperature readings for the laser, detector, and instrument are erroneous.  Incorrect 
calibration factors; data should not be used.  This time period is prior to the official 
start of the PYE deployment.
Measurements:pyemplM1.a1:
  • Laser temperature(laser_temp)
  • Detector temperature(detector_temp)
  • Instrument temperature(instrument_temp)

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