- Related Research Areas
- Atmospheric Composition, Climate Variability & Change
This proposal brings together important elements within the existing programs of the Atmospheric Chemistry and Dynamics Branch to enhance the ability to simulate the complex interactions in the Earth's atmosphere and to develop innovative ways to test these simulations with data from a variety of existing and potential future satellites and other platforms. These tasks will enable scientists in our branch and the overall community to carry out a variety of scientific investigations using the improved and tested models that we will produce. Our goals are: Continue integration and testing of the coupled chemistry-climate model, in particular emphasizing the incorporation and feedbacks of aerosol processes, coupling with an ocean model and land processes, and incorporating computationally efficient chemical mechanisms. Continue migration of the GMI off-line model to the GEOS-5 framework, specifically enabling incorporation of meteorological fields from other analyses of free-running general circulation models.. Enhance the existing aerosol modeling capabilities through inclusion of nitrate aerosols and secondary organic aerosols, and examine the coupling of aerosol processes and gas-phase chemistry and radiative processes. Derive robust observational constraints that will expand the physical validation of processes in the troposphere and will set the stage for future model intercomparisons. Carry out multi-year “baseline” CTM simulations for comparison with observations and distribution to the community, as well as time-slice and time-dependent simulations with the coupled chemistry-climate model, again for internal and external distribution. Characterize tracer transport, stratospheric-tropospheric exchange and wet deposition processes in GEOS and other models, and carry out controlled modeling experiments and data comparisons to examine how these different processes control the simulated atmospheric composition above 5 km, and how data can constrain the process formulation. Facilitate specific science investigations proposed by other members of the community, using the GEOS-5 system as either a chemical-transport model or a fully coupled climate model.
Project PI: Jose Rodriguez/NASA Goddard Space Flight Center
NASA Goddard Space Flight Center, Code 572, Greenbelt, MD20771
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