GEOS-5 Earth System Modeling and Data Assimilation

The Goddard Earth Observing System Model, Version 5 (GEOS-5) is a system of models integrated using the Earth System Modeling Framework (ESMF). The GEOS-5 Data Assimilation System (GEOS-5 DAS) integrates the GEOS-5 Atmospheric Global Climate Model (GEOS-5 GCM) with the Gridpoint Statistical Interpolation (GSI) atmospheric analysis developed jointly with NOAA/NCEP/EMC. The GEOS-5 systems are being developed in the GMAO to support NASA's earth science research in data analysis, observing system modeling and design, climate and weather prediction, and basic research.

GEOS-5 is supported by NASA's Modeling Analysis and Prediction (MAP) Program.

News

• 16 November 2007. The GEOS-5 Forecasting System, including a wealth of meteorological and chemical constituents/aerosols, will be supporting the Arctic Research of the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) during the Spring and Summer of 2008. A description of the GEOS-5 Configuration for ARCTAS is available.

• 1 November 2006. GEOS-5 AGCM Release 1.0 is now available from the MAP Software Repository. This is the first component released from the GEOS-5 System. Climate simulations and DAS integrations have been undertaken with this release and some results are presented in the Results section of this page. See the Release notes for details of this release.

GEOS-5 Systems

GEOS-5 ADAS 4DDA: Four-dimensional Variational Data Assimilation

The GMAO atmospheric data assimilation system is a 3DVAR that combines the GMAO atmospheric general circulation model [AGCM] with the jointly-developed GMAO/NCEP Grid-point Statistical Interpolation (GSI) analysis.

Documentation

1. GEOS-5 System Overview
2. GEOS-5 Component-based Architecture
3. GEOS-5 Components
4. GEOS-5 Data Products
5. GEOS-5 Software Engineering
6. GEOS-5 Validation
7. GEOS-5 Design Documents
8. GEOS-5 Checkout and Build Instructions