DQRID : D991102.1
Start DateStart TimeEnd DateEnd Time
03/05/1999000006/08/19991710
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Subject:
SGP/MWR/B4 - power lines in field of view
DataStreams:sgp5mwravgB4.c1, sgpmwrtipB4.00, sgpmwrtipB4.a1, sgpmwrlosB4.a1, sgpmwrlosB4.b1,
sgpmwrlosB4.00
Description:
On 5 March 1999, the local power company installed transmission lines north 
of BF4 at an elevation angle of about 30 degrees from the MWR, in the field 
of view of tip scans. This affected the calibration of the instrument and 
the retrieved values of precipitable water vapor and liquid water path. 
On 8 June 1999 at 1710 GMT, the MWR was remotely rotated 90 degrees so the 
instrument would scan from east to west.
This reorientation has corrected the problem.
Suggestions: 
null
Measurements:sgpmwrlosB4.00:
  • (Raw data stream - documentation not supported)
more
sgpmwrlosB4.a1:
  • Total water vapor along LOS path(vap)
  • Averaged total liquid water along LOS path(liq)
more
sgpmwrtipB4.a1:
  • Correlation coefficients for tip curve at 31.4 GHz(r31)
  • 31.4 GHz blackbody(bb31)
  • Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
  • Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
  • Temperature correction coefficient at 23.8 GHz(tc23)
  • 23.8 GHz blackbody+noise injection signal(bbn23)
  • 31.4 GHz sky signal(tipsky31)
  • Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
  • 23.8 GHz Blackbody signal(bb23)
  • 23.8 GHz goodness-of-fit coefficient(r23)
  • 23.8 GHz sky signal(tipsky23)
  • Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
  • Temperature correction coefficient at 31.4 GHz(tc31)
  • 31.4 GHz blac2body+noise injection signal(bbn31)
  • Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
  • Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
more
sgpmwrtipB4.00:
  • (Raw data stream - documentation not supported)
more
sgp5mwravgB4.c1:
  • 23.8 GHz sky brightness temperature(23tbsky)
  • Total water vapor along LOS path(vap)
  • Standard deviation about the mean for the total liquid water amount(liq_sdev)
  • Standard deviation about the mean for the total water vapor amount(vap_sdev)
  • Standard deviation about the mean for the 31.4 GHz sky brightness temperature(tbsky31_sdev)
  • Standard deviation about the mean for the 23.8 GHz sky brightness temperature(tbsky23_sdev)
  • 31.4 GHz sky brightness temperature(31tbsky)
  • Averaged total liquid water along LOS path(liq)
more
sgpmwrlosB4.b1:
  • Total water vapor along LOS path(vap)
  • Mean 23.8 GHz sky brightness temperature(tbsky23)
  • Averaged total liquid water along LOS path(liq)
  • Mean 31.4 GHz sky brightness temperature(tbsky31)
more

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