DQRID : D960129.2
Start DateStart TimeEnd DateEnd Time
01/13/1996000001/19/19962359
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Subject:
SGP/MWR/B1/B5 - Calibration questionable
DataStreams:sgpmwrlosB1.a1, sgpmwrlosB5.a1, sgpmwrlosB5.a0, sgpmwrlosB1.a0
Description:
At the present time, calibrations at B1 and B5 appear out of date.

SGP-B1 (Hillsboro, KS)
Precipitable vapor amounts occasionally negative - calibration needs to
be checked when sky becomes clear.  Data quality is questionable.

Precipitable vapor amounts about 0.6 cm less than integrated
soundings.


SGP-B5 (Morris, OK)
Data from this instrument are missing for 12-15 Jan.  Reason unknown.

Because precipitable vapor amount was negative during 7-8 Jan,
calibration is still suspect.  Liquid water path appears positive for
periods when sky is clear (positive bias).  Data quality is
questionable.

Precipitable vapor amounts 0.3-0.5 cm less than integrated soundings.
Suggestions: 
Measurements:sgpmwrlosB1.a1:  
  • 31.4 GHz sky brightness temperature(31tbsky)
  • 23.8 GHz sky brightness temperature(23tbsky)
  • Actual elevation angle(actel)
  • Actual Azimuth(actaz)
  • IR Brightness Temperature(ir_temp)
  • Total water vapor along LOS path(vap)
  • Averaged total liquid water along LOS path(liq)
more

sgpmwrlosB1.a0:  
  • 31.4 GHz sky+noise injection signal(31skyn)
  • 23.8 GHz sky+noise injection signal(23skyn)
  • 31.4 GHz noise injection brightness temperature(31unoise)
  • Mixer kinetic (physical) temperature(tkxc)
  • 23.8 GHz blackbody+noise injection signal(23bbn)
  • Blackbody kinetic temperature(tkbb)
  • Which LOS configuration(losn)
  • 31.4 GHz blackbody(31bb)
  • 23.8 GHz sky signal(23sky)
  • 23.8 GHz Blackbody signal(23bb)
  • 23.8 GHz noise injection brightness temperature(23unoise)
  • 31.4 GHz sky signal(31sky)
  • 31.4 GHz blackbody+noise injection signal(31bbn)
  • Actual elevation angle(actel)
  • 31.4 GHz sky brightness temperature(31tbsky)
  • 23.8 GHz sky brightness temperature(23tbsky)
  • IR Brightness Temperature(ir_temp)
  • Averaged total liquid water along LOS path(liq)
  • Total water vapor along LOS path(vap)
  • Actual Azimuth(actaz)
more

sgpmwrlosB5.a1:  
  • Averaged total liquid water along LOS path(liq)
  • 23.8 GHz sky brightness temperature(23tbsky)
  • IR Brightness Temperature(ir_temp)
  • Actual Azimuth(actaz)
  • Actual elevation angle(actel)
  • 31.4 GHz sky brightness temperature(31tbsky)
  • Total water vapor along LOS path(vap)
more

sgpmwrlosB5.a0:  
  • 31.4 GHz noise injection brightness temperature(31unoise)
  • 23.8 GHz blackbody+noise injection signal(23bbn)
  • Mixer kinetic (physical) temperature(tkxc)
  • Averaged total liquid water along LOS path(liq)
  • 31.4 GHz sky+noise injection signal(31skyn)
  • 23.8 GHz sky+noise injection signal(23skyn)
  • 23.8 GHz sky signal(23sky)
  • Which LOS configuration(losn)
  • 31.4 GHz blackbody(31bb)
  • 31.4 GHz sky signal(31sky)
  • 31.4 GHz blackbody+noise injection signal(31bbn)
  • Blackbody kinetic temperature(tkbb)
  • 23.8 GHz Blackbody signal(23bb)
  • 23.8 GHz noise injection brightness temperature(23unoise)
  • Actual elevation angle(actel)
  • IR Brightness Temperature(ir_temp)
  • 23.8 GHz sky brightness temperature(23tbsky)
  • 31.4 GHz sky brightness temperature(31tbsky)
  • Actual Azimuth(actaz)
  • Total water vapor along LOS path(vap)
more


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