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The GEOS-Chemistry-Climate Model (CCM), Versions 1,2 and 3This paper examines evolution of key ozone and climate aspects in our range of Goddard Earth Observing System Models, Versions 1-3. Version 1 (Pawson et al., 2008; )GR) used GSFC stratospheric ozone chemistry in GEOS-4 GCM. A chronic high bias in polar ozone at low chlorine loading persisted into Version 2, which used the GEQS-5 GCM and the same chemistry. This is much improved in Version 3, which uses the GMI-COMBO stratosphere-troposphere chemistry. A dynamical problem with Version 1, the overactive nature of the Antarctic polar vortex, is corrected in Versions 2 and 3, when GEQS-5 replaces GEO5-4. Other changes between the various model versions will be documented.
Document ID
20090042629
Acquisition Source
Goddard Space Flight Center
Document Type
Other
Authors
Pawson, Steven
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Nielsen, Eric
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Duncan, Bryan
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Stolarski, Richard
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2009
Subject Category
Meteorology And Climatology
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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