GEOS-5 Configuration for PIESA
The Integrated Earth System Analysis (IESA) is a general framework for synthesizing information from earth-system models and observations, and turning them into products of various sorts, recognizing user needs, and making the information accessible and widely available. This requires the use of sophisticated models and assimilation systems, and their exploitation in prediction on multiple time scales, along with interactive data stewardship and management. The Phased IESA (PIESA) project is a first attempt centered around the [http://gmao.gsfc.nasa.gov/research/merra/ Mordern Era Retrospective-analysis for Research and Applications] (MERRA) to provide historical global datasets including atmospheric aerosols, chemical constituents, as well as land and oceanic parameters.
At present, this is a working document defining the main attributes of the GEOS-5 system that will be used to conduct an initial multi-year replay run including GOCART Aerosols, CO and CO2, as well as the GMI combined tropospheric/stratospheric chemistry.
The Baseline System
The starting point is the GEOS-5 Atmospheric Data Assimilation System (GEOS-5 ADAS) used for supporting the Year of Tropical Convection (YOTC), consisting of the main subsystems:
- GEOS-5 Atmospheric Global Climate Model (GEOS-AGCM)
- The Gridpoint Statistical Interpolation (GSI) analysis system, jointly developed by NOAA/NCEP and GMAO
The aerosol/chemistry specific configuration are described in these pages: