DQRID : D050224.3
Start DateStart TimeEnd DateEnd Time Data Quality Metric
02/09/2005230002/10/20052300Does not affect quality
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Subject:
NSA/AERI/C1 - Blower Motor Failure -Channel 1 data effect
DataStreams:nsaaerirawC1.00, nsaaeriengineerC1.b1, nsaaerisummaryC1.b1, nsaaerilblcloudsC1.c1,
nsaaeriC1.00
Description:
The blower motor failed on February 9, estimated time 23:00 GMT. The problem was repaired 
on February 10, 23:00 GMT. The blower motor serves two functions. It maintains the 
instrument window enclosure at the outside
temperature and blows ice crystals from the enclosure. Failure of the motor
caused the enclosure temperature to increase by approximately 12K (from 255
to 267K). Previous experience in comparing arctic instruments with the blower on and off 
have shown that if ice crystals enter the enclosure, there is a slight increase in the 3-5 
um (ch 2) spectral intensity. It is unlikely that Ch 1 is affected. However, we can not 
be certain that there is no problem with the data. Hence, this DQR should be considered a 
warning that Channel 1 data may be affected.
Suggestions: 
Measurements:nsaaerirawC1.00:
  • Raw data stream - documentation not supported
more
nsaaeriengineerC1.b1:
  • surfaceLayerAirTemp675_680
  • skyViewStdDevRadiance700_705
  • skyViewImaginaryRadiance985_990
  • skyViewStdDevRadiance675_680
  • elevatedLayerAirTemp700_705
  • skyViewStdDevRadiance985_990
  • elevatedLayerRadiance700_705
  • skyViewImaginaryRadiance700_705
  • SWskyNENacceptable
  • skyViewImaginaryRadiance675_680
  • SWskyNEN
  • longwaveWindowAirTemp985_990
  • longwaveWindowRadiance985_990
more
nsaaerisummaryC1.b1:
  • elevatedLayerAirTemp700_705
  • SkyNENCh1
  • elevatedLayerRadiance700_705
  • skyViewStdDevRadiance700_705
  • surfaceLayerRadiance675_680
  • surfaceLayerAirTemp675_680
  • longwaveWindowRadiance985_990
  • skyViewStdDevRadiance985_990
  • longwaveWindowAirTemp985_990
  • SkyUniformityCh1
  • SkyRadianceSpectralAveragesCh1
  • skyViewStdDevRadiance675_680
  • SkyBrightnessTempSpectralAveragesCh1
more
nsaaerilblcloudsC1.c1:
  • mean_AERI_BT_channel_1
more
nsaaeriC1.00:
  • Raw data stream - documentation not supported
more

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