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The GEOS Chemistry Climate Model: Implications of Climate Feedbacks on Ozone Depletion and RecoveryThe Goddard Earth Observing System Chemistry Climate Model (GEOS CCM) has been developed by combining the atmospheric chemistry and transport modules developed over the years at Goddard and the GEOS general circulation model, also developed at Goddard. The first version of the model was used in the CCMVal intercomparison exercises that contributed to the 2006 WMO/UNEP Ozone Assessment. The second version incorporates the updated version of the GCM (GEOS 5) and will be used for the next round of CCMVal evaluations and the 2010 Ozone Assessment. The third version, now under development, incorporates the combined stratosphere and troposphere chemistry package developed under the Global Modeling Initiative (GMI). We will show comparison to past observations that indicate that we represent the ozone trends over the past 30 years. We will also show the basic temperature, composition, and dynamical structure of the simulations. We will further show projections into the future. We will show results from an ensemble of transient and time-slice simulations, including simulations with fixed 1960 chlorine, simulations with a best guess scenario (Al), and simulations with extremely high chlorine loadings. We will discuss planned extensions of the model to include emission-based boundary conditions for both anthropogenic and biogenic compounds.
Document ID
20080030211
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Stolarski, Richard S.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Pawson, Steven
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Douglass, Anne R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Newman, Paul A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kawa, S. Randy
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Nielsen, J. Eric
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Rodriquez, Jose
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Strahan, Susan
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Oman, Luke
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Waugh, Darryn
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 24, 2013
Publication Date
June 30, 2008
Subject Category
Chemistry And Materials (General)
Meeting Information
Meeting: Wuadrennial Ozone Symposium
Location: Roomso
Country: Norway
Start Date: June 30, 2008
End Date: July 5, 2008
Sponsors: International Association of Meteorology and Atmospheric Sciences
Distribution Limits
Public
Copyright
Other

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