DQRID : D071129.1
Start DateStart TimeEnd DateEnd Time
11/06/2007000011/26/20071733
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Subject:
SGP/MWR/B1 - Calibration failure
DataStreams:sgpmwrlosB1.b1, sgpmwrtipB1.a1
Description:
The radiometer suddenly stopped performing successful tip curve calibrations. Brightness 
temperatures are inaccurate during this time. The instrument was removed from service 
20071126.  Reprocessing is not possible.
Suggestions: 
Measurements:sgpmwrlosB1.b1:
  • 31.4 GHz sky signal(sky31)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Total water vapor along LOS path(vap)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Mean 31.4 GHz sky brightness temperature(tbsky31)
  • Mean 23.8 GHz sky brightness temperature(tbsky23)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • 23.8 GHz sky signal(sky23)
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sgpmwrtipB1.a1:
  • Total water vapor along zenith path using tip-derived brightness temperatures(vaptip)
  • 31.4 GHz sky signal(tipsky31)
  • 23.8 GHz sky brightness temperature derived from tip curve(tbskytip23)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
  • Correlation coefficients for tip curve at 31.4 GHz(r31)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • 23.8 GHz sky signal(tipsky23)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • 31.8 GHz sky brightness temperature derived from tip curve(tbskytip31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • 23.8 GHz goodness-of-fit coefficient(r23)
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