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Atmospheric Composition

We will utilize the GSFC 2D interactive chemistry-radiative-dynamical model and the GEOS 3D chemistry climate model to quantify the anthropogenic and natural contributions to long-term stratospheric changes. We will use these models in several studies described as follows: 1) The impacts of the changing abundances of chlorofluorocarbons and the greenhouse gases CO2, CH4, and N2O on stratospheric dynamics and chemistry for 1850-2100 will be quantified; 2) The impact of solar cycle variations (including solar UV flux, solar proton events, and galactic cosmic rays) on the long-term evolution of the middle atmosphere will be investigated and the solar cycle variations will be implemented in the GEOS-CCM; 3) The global warming potentials of hydrofluorocarbons and other anthropogenic substances will be evaluated; and 4) Assessment of anthropogenic effects on the middle atmosphere will be undertaken as requested.

Project PI: Charles Jackman/NASA Goddard Space Flight Center

Atmospheric Chemistry and Dynamics Branch Code 613.3 Laboratory for Atmospheres NASA Goddard Space Flight Center Greenbelt, MD 20771

Phone: (301) 614-6053

Fax: (301)614-5903

Email: Charles.H.Jackman@nasa.gov

http://acdb-ext.gsfc.nasa.gov/People/Jackman/

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Started: Sep 03, 2010

Last Activity: Feb 02, 2011

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