DQRID : D960226.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/26/1996000004/01/19961859Suspect
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Subject:
SGP/MWR/B4  - Noisy 31 GHz channel
DataStreams:sgpmwrlosB4.a1, sgpmwrlosB4.00, sgpmwrlosB4.b1, sgpmwrlosB4.a0, sgpmwrB4.00
Description:
Instrument mentor analysis of the TIP data from 2/10/1996-2/14/1996 and found that the 
calibration of the microwave radiometer and did NOT need to be changed.

The results are as follows:

Date     Tnd_23     Tnd_31
Feb 96   163.56     168.47
Sep 95   163.55     168.99

However, the deviations about the mean were considerably larger in the 31 GHz channel than 
the 23 GHz: 0.82 vs 0.14 K, respectively. Consequently the 31 GHz brightness temperature 
also showed considerably greater variation than the 23 GHz brightness temperature.

The precipitable vapor shows good agreement with the colocated soundings, but instrument 
mentor recommends caution in using these data.

The instrument was shipped to the manufacture and 31.4 GHz gunn fiode oscillator was 
replaced by Radiometrics.
Suggestions: 
Use data with caution
Measurements:sgpmwrlosB4.00:
  • Raw data stream - documentation not supported
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sgpmwrlosB4.a1:
  • actel
  • actaz
  • 31tbsky
  • 23tbsky
  • ir_temp
  • vap
  • liq
more
sgpmwrB4.00:
  • Raw data stream - documentation not supported
more
sgpmwrlosB4.b1:
  • vap
  • ir_temp
  • tbsky23
  • liq
  • tbsky31
more
sgpmwrlosB4.a0:
  • tbsky23
  • 23unoise
  • tnd23
  • noise_injection_temp_23
  • temperature_correction_coef_23
  • tkair
  • sky23
  • liq
  • bbn23
  • bb31
  • 31unoise
  • 31tbsky
  • losn
  • tkxc
  • tnd31
  • tbsky31
  • tkbb
  • 23tbsky
  • actel
  • noise_injection_temp_31
  • sky31
  • 31skyn
  • tknd
  • 23skyn
  • bb23
  • temperature_correction_coef_31
  • actaz
  • bbn31
  • vap
more

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