Data Quality Reports for Session: 143697 User: sjwalsh Completed: 07/13/2012

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D060928.4NSA/SONDE/C1 - Increased precision for alt, dp, pres, rh, tdrynsasondewnpnC1.b1
D120423.1NSA/MET/C1 - CMH failurensametC1.b1


DQRID : D060928.4
Start DateStart TimeEnd DateEnd Time
09/29/2006050012/31/99992359
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:
  • alt
  • Dry Bulb Temperature(tdry)
  • Dewpoint Temperature(dp)
  • Humidity, relative(rh)
  • Pressure, atmospheric, constant value of model level, RUC model output(pres)

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DQRID : D120423.1
Start DateStart TimeEnd DateEnd Time
12/07/2011221512/07/20112330
12/08/2011014512/08/20111345
12/25/2011030012/25/20110630
01/02/2012160001/03/20121900
01/05/2012033001/06/20120030
01/07/2012113001/08/20120100
01/08/2012073001/08/20120800
01/08/2012113001/09/20120000
01/14/2012080001/14/20121545
01/16/2012194501/17/20121945
01/18/2012180001/18/20121900
03/04/2012000003/04/20120200
12/04/2011130012/04/20111730
12/05/2011000012/05/20112100
12/05/2011213012/07/20110645
Subject:
NSA/MET/C1 - CMH failure
DataStreams:nsametC1.b1
Description:
Starting 14:17 GMT on 12/4/2011 the CMH Dew Point began reporting missing value, CMH 
relative humidity was flat-lining at 100% and CMH saturated vapor pressure was flat-lined at a 
high value.  This condition continued very intermittently for several months.  Issue was 
frosting and a failed ventilation fan.
Measurements:nsametC1.b1:
  • cmh_dew_point
  • cmh_temp
  • cmh_vapor_pressure
  • cmh_rh
  • cmh_sat_vapor_pressure

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