Validation of MOPITT Version 5 thermal-infrared, near-infrared, and multispectral carbon monoxide profile retrievals for 2000-2011

AMS Citation:
Deeter, M., and Coauthors, 2013: Validation of MOPITT Version 5 thermal-infrared, near-infrared, and multispectral carbon monoxide profile retrievals for 2000-2011. Journal of Geophysical Research-Atmospheres, 118, 6710-6725, doi:10.1002/jgrd.50272.
Date:2013-06-27
Resource Type:article
Title:Validation of MOPITT Version 5 thermal-infrared, near-infrared, and multispectral carbon monoxide profile retrievals for 2000-2011
Abstract: Validation results are reported for the MOPITT (Measurements of Pollution in the Troposphere) "Version 5" (V5) product for tropospheric carbon monoxide (CO) and are compared to results for the "Version 4" product. The V5 retrieval algorithm introduces (1) a method for reducing retrieval bias drift associated with long-term instrumental degradation, (2) a more exact representation of the effects of random errors in the radiances and, for the first time, (3) the use of MOPITT's near-infrared (NIR) radiances to complement the thermal-infrared (TIR) radiances. Exploiting TIR and NIR radiances together facilitates retrievals of CO in the lowermost troposphere. V5 retrieval products based (1) solely on TIR measurements, (2) solely on NIR measurements and (3) on both TIR and NIR measurements are separately validated and analyzed. Actual retrieved CO profiles and total columns are compared with equivalent retrievals based on in situ measurements from (1) routine NOAA aircraft sampling mainly over North America and (2) the "HIAPER Pole to Pole Observations" (HIPPO) field campaign. Particular attention is focused on the long-term stability and geographical uniformity of the retrieval errors. Results for the retrieved total column clearly indicate reduced temporal bias drift in the V5 products compared to the V4 product, and do not exhibit a positive bias in the Southern Hemisphere, which is evident in the V4 product.
Subject(s):MOPITT, carbon monoxide, satellite remote sensing, validation
Peer Review:Refereed
Copyright Information:Copyright 2013 American Geophysical Union.
OpenSky citable URL: ark:/85065/d7xg9s1q
Publisher's Version: 10.1002/jgrd.50272
Author(s):
  • Merritt Deeter - NCAR/UCAR
  • Sara Martinez-Alonso - NCAR/UCAR
  • David Edwards - NCAR/UCAR
  • Louisa Emmons - NCAR/UCAR
  • John Gille - NCAR/UCAR
  • Helen Worden - NCAR/UCAR
  • J. Pittman
  • B. Daube
  • S. Wofsy
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