DQRID : D140228.1
Start DateStart TimeEnd DateEnd Time Data Quality Metric
01/01/2011000002/28/20140000Incorrect
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Subject:
SGP/SWS/C1 - Reprocess: NIR wavelengths incorrect.
DataStreams:sgpswsC1.b1
Description:
When the SWS NIR InGaAs spectrometer was replaced at the end of 2010 it came with a new 
mapping of pixel to wavelengths.  This updated table has never been applied in the ingest.  
This amounts to about a 15 nm shift (spectra are being reported at about 15 nm longer 
wavelength than actual).  This affects all SWS measured spectra since Jan 2011 at 
wavelengths > 950 nm. 

Because the spectra measured by the SWS are blended within the wavelength range where they 
overlap this problem will not be trivial for the end-user to correct.  Comparison with 
published spectroscopy data sets may permit the user to determine and apply a correction 
to the NIR data.  

Data will be reprocessed.
Suggestions: 
Wait for reprocessed data.
Measurements:sgpswsC1.b1:
  • wavelength
  • zen_spec_calib
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