DQRID : D951201.2
Start DateStart TimeEnd DateEnd Time Data Quality Metric
11/29/1995173911/29/19951833Suspect
more
Subject:
Bad pressure sensor
DataStreams:sgpsondeC1.a0, sgpsondeC1.a1
Description:
DQR No:                               Platform: sgpsondeC1

Subject:   Bad pressure sensor - CF sounding 11/29/95:1739

Date Submitted:  12/1/95
Submitted By:    Barry Lesht          _x_  Instrument Mentor
                                      ___  EST Member
                                      ___  Science Team Member
                                      ___  Other _____________________________
 
For questions or problems, please contact the ARM Experiment Center at
509-375-6898 or via email at dqr@arm.gov.

Platform/Measurement:  sgpsondeC1
	What level data: (raw,a0,a1,b1,c1 etc):

    What location was the data collected at: CF
 
    Period of time in question
 	Begin Date  11/29/95   Time   17:39:02 (GMT)
 	End Date    11/29/95   Time   18:33    (GMT)

 Data should be labeled:
 ___  questionable                      ___  All data fields affected
 _X_  incorrect                         _x_  Only some data fields affected
 ___  wrong calibration
 ___  others 
 
 Discussion of Problem:

Pressure values in this sounding jump from 980.9 hPa at the surface to
908.3 hPa at the first sample after launch.  Successive pressure readings
seem incrementally correct from the 908.3 base.  It is possible that
the shock of launch caused the pressure sensor to become offset.  All
pressure values (and altitude) values should be marked incorrect.  All
ascent rate values (before the first 30 seconds) are incorrect.  Ascent
rate values after the first 30 seconds are probably okay.


 
Other observations/measurements impacted by this problem:



Suggested Corrections of the Problem: (e.g. change calibration factor and
recompute, flag data with this comment, etc.)

Flag data.

Data Processing Notes                Date
Suggestions: 
Measurements:sgpsondeC1.a0:
  • lat
  • wspd
  • dp
  • wstat
  • deg
  • lon
  • rh
  • base_time
  • time_offset
  • tdry
  • asc
  • pres
  • alt
more
sgpsondeC1.a1:
  • alt
  • base_time
  • rh
  • asc
  • pres
  • v_wind
  • tdry
  • deg
  • time_offset
  • u_wind
  • lon
  • dp
  • wstat
  • wspd
  • lat
more

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