| Description: | DQR No: Platform: sondeB6
Subject: Apparent Interference Signal in Sounding
Date Submitted: October 22, 1995
Submitted By: _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:
What level data: (raw,a0,a1,b1,c1 etc): All
What location was the data collected at: BF6- Purcell
Period of time in question
Begin Date 7/28/95 Time 11:38:00 (GMT)
End Date 7/28/95 Time 11:40:16 (GMT)
Data should be labeled:
___ questionable _X_ All data fields affected
_X_ incorrect ___ Only some data fields affected
___ wrong calibration
___ others
Discussion of Problem: This sounding (which terminated after only
nine minutes and sixteen seconds of flight) was apparently affected
by the signal of another radiosonde. A sudden step-change in
temperature occurs at seven minutes into the flight. This could
be accounted for by the ground station locking onto another sonde
and essentially reporting the foreign sonde's data with our sonde's
calibration coefficients. The effect is most dramatic in temperture,
however, rh and pressure should be similarly affected. The data
below the level of the step-change 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 Processing Notes Date |