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 |