The MOPITT version 4 CO product: Algorithm enhancements, validation, and long-term stability

AMS Citation:
Deeter, M., and Coauthors, 2010: The MOPITT version 4 CO product: Algorithm enhancements, validation, and long-term stability. Journal of Geophysical Research, 115, D07306, doi:10.1029/2009JD013005.
Date:2010-04-15
Resource Type:article
Title:The MOPITT version 4 CO product: Algorithm enhancements, validation, and long-term stability
Abstract: Vertical profiles of carbon monoxide (CO) concentration and corresponding total column values derived from measurements made by the Measurements of Pollution in the Troposphere (MOPITT) satellite instrument are now being processed operationally with the "version 4" (V4) retrieval algorithm. This algorithm exploits the results of analyses of in situ data, chemical transport modeling, and radiative transfer modeling in the MOPITT postlaunch era. Improvements in the V4 product are evident in both clean and polluted conditions. The new products are validated using CO in situ measurements acquired from aircraft from 2000 to 2007. As determined by both retrieval simulations and observations, retrieval bias drift is typically about 1 ppbv/yr for levels in the middle troposphere and about 2 ppbv/yr in the upper troposphere. Retrieval simulations indicate that observed bias drift may be the result of gradual on-orbit changes in the instrument's modulation cell parameters.
Peer Review:Refereed
Copyright Information:An edited version of this paper was published by AGU. Copyright 2010 American Geophysical Union.
OpenSky citable URL: ark:/85065/d7fn16n3
Publisher's Version: 10.1029/2009JD013005
Author(s):
  • Merritt Deeter - NCAR/UCAR
  • David Edwards - NCAR/UCAR
  • John Gille - NCAR/UCAR
  • Louisa Emmons - NCAR/UCAR
  • Gene Francis - NCAR/UCAR
  • Shu-peng Ho - NCAR/UCAR
  • Debbie Mao - NCAR/UCAR
  • Helen Worden - NCAR/UCAR
  • James Drummond
  • Paul Novelli
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