DQRID : D170210.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
06/11/2003143306/11/20032347Does not affect quality
08/06/2000001108/06/20002348Does not affect quality
08/05/2000001008/05/20002345Does not affect quality
07/01/2003001007/01/20032345Does not affect quality
08/22/2004001008/22/20042350Does not affect quality
03/23/2007001103/23/20072347Does not affect quality
02/03/2011001102/03/20112346Does not affect quality
03/04/2002151803/04/20022347Does not affect quality
12/25/2009001112/25/20092344Does not affect quality
02/15/2011001102/15/20112347Does not affect quality
06/07/2003001006/07/20032345Does not affect quality
01/29/2011001001/29/20112346Does not affect quality
03/11/2000000903/11/20002344Does not affect quality
02/02/2011001202/02/20112352Does not affect quality
07/04/2001001307/04/20012348Does not affect quality
01/27/2004001001/27/20042345Does not affect quality
02/14/2011001002/14/20112348Does not affect quality
01/06/2000000901/06/20002348Does not affect quality
11/22/1999001211/22/19992347Does not affect quality
09/12/2001001009/12/20012344Does not affect quality
07/29/2004000307/29/20042353Does not affect quality
12/26/2000001112/26/20002347Does not affect quality
11/21/1999001111/21/19992350Does not affect quality
08/04/2000001408/04/20002349Does not affect quality
06/27/2001001206/27/20012347Does not affect quality
06/09/2003001106/09/20032349Does not affect quality
01/30/2011001001/30/20112345Does not affect quality
01/20/2011001001/20/20112347Does not affect quality
01/27/2006184501/27/20062346Does not affect quality
06/10/2010001106/10/20102346Does not affect quality
11/19/1999001011/19/19992346Does not affect quality
02/09/2011001002/09/20112350Does not affect quality
12/31/2010001012/31/20102349Does not affect quality
06/08/2003001206/08/20032344Does not affect quality
08/07/2000001008/07/20002345Does not affect quality
02/13/2011001002/13/20112347Does not affect quality
08/23/2004001208/23/20042349Does not affect quality
06/06/2003001306/06/20032348Does not affect quality
04/21/2009001004/21/20092347Does not affect quality
01/08/2010001001/08/20102348Does not affect quality
11/30/2006001011/30/20062347Does not affect quality
01/18/2011001101/18/20112344Does not affect quality
04/26/2008001204/26/20082352Does not affect quality
08/03/2000001008/03/20002346Does not affect quality
05/19/2006001205/19/20062344Does not affect quality
11/20/1999001311/20/19992345Does not affect quality
07/23/2004000607/23/20042354Does not affect quality
12/21/2010001012/21/20102350Does not affect quality
more
Subject:
SGP/AERI/C1 - Reprocess: NaNs in data
DataStreams:sgpaeri01summaryC1.a1, sgpaeri01C1.00, sgpaeri01engineerC1.a1
Description:
The "problem" is that the atmosphere is relatively dry and clear, and thus the true 
atmospheric radiance is very close to zero.  However, there is always noise in the 
measurements, and thus occassionally the AERI is reporting zero or negative radiance in some of the 
channel 2 data. So far, everything is ok.  The NaNs result from the code trying to convert 
the observed radiance to brightness temperature; this is not defined for non-positive 
radiances and thus the NaNs are output.

These values should have been output as missing value (-9999) instead of NaN.
Suggestions: 
Measurements:sgpaeri01summaryC1.a1:  
  • SkyNENCh2
  • SkyNENCh1
  • skyViewStdDevRadiance985_990
  • skyViewStdDevRadiance2510_2515
  • surfaceLayerRadiance2295_2300
  • elevatedLayerAirTemp700_705
  • elevatedLayerRadiance2282_2287
  • skyViewStdDevRadiance2282_2287
  • surfaceLayerAirTemp675_680
  • skyViewStdDevRadiance675_680
  • surfaceLayerAirTemp2295_2300
  • SkyRadianceSpectraAveragesCh1
  • SkyRadianceSpectraAveragesCh2
  • surfaceLayerRadiance675_680
  • SWresponsivity
  • elevatedLayerAirTemp2282_2287
  • SkyUniformityCh2
  • shortwaveWindowRadiance2510_2515
  • SkyUniformityCh1
  • SWskyNEN
  • skyViewStdDevRadiance700_705
  • SWskyNENAcceptable
  • SkyVariabilityAveragesCh1
  • SWskyNENacceptable
  • skyViewStdDevRadiance2295_2300
  • SkyBrightnessTempSpectralAveragesCh2
  • SkyBrightnessTempSpectralAveragesCh1
  • SkyVariabilityAveragesCh2
  • elevatedLayerRadiance700_705
  • shortwaveWindowAirTemp2510_2515
more

sgpaeri01engineerC1.a1:  
  • engineeringChannel2data
  • engineeringChannel1Data
  • engineeringChannel0Counts
  • engineeringChannel2counts
  • engineeringChannel2Counts
  • engineeringChannel1data
  • engineeringChannel0Data
  • countsStdDevPressure
  • fixed12KohmResistor
  • countsStdDevRelativeHumidity
  • engineeringChannel0data
  • engineeringChannel0counts
  • engineeringChannel1counts
  • engineeringChannel1Counts
  • fixed97KohmResistor
  • engineeringChannel2Data
more

sgpaeri01C1.00:  
  • Raw data stream - documentation not supported
more


Close this window