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The GMAO is collaborating on three ARRA Projects* contributing to NASA Earth Science under the Science Mission Directorate's (SMD's) Modeling, Analysis and Prediction program. The overall objectives of these projects are to enhance SMD's climate modeling capabilities, to accelerate development of consistent analyses across Earth system components, and to test software and stand-alone assimilation capabilities that help accelerate the transition of NASA satellite data to operational implementation.

The projects are:

1. Progress towards an Integrated Earth System Analysis - Aerosol component: Simulations will be conducted with the GEOS-5 model coupled to GOCART (for aerosols) using the replay technique with the MERRA meteorological forcing.
   
   Progress towards an Integrated Earth System Analysis - Atmospheric chemistry constituent component: Simulations will be conducted with the GEOS-5 model coupled to GMI (for trace gas chemistry), using the replay technique with the MERRA meteorological forcing.
2. Advances in the assimilation of Advanced Infra-Red Sounder (AIRS) and microwave limb sounder (MLS) radiance data data into the GEOS-5 atmospheric data assimilation system (DAS), and
3. Use of MERRA to contribute to improving cloud and convection parameterizations by placing satellite data in a meteorological context and expanding the parameter space explored by a single column model (SCM) version of GEOS-5 and cloud resolving model (CRM) simulations to be conducted by the Mesoscale Atmospheric Processes Branch.

Final Reports:

• PIESA-Aerosol
• PIESA-Chemistry
• AIRS
• MLS
• MERRA_SCM_Cloud

(* American Recovery and Reinvestment Act of 2009)

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