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          Institute: MPI für Meteorologie     Collection: Atmosphere in the Earth System     Display Documents

ID: 433823.0, MPI für Meteorologie / Atmosphere in the Earth System
Aerosol analysis and forecast in the European Centre for Medium-Range Weather Forecasts Integrated Forecast System: 2. Data assimilation
Authors:Benedetti, A.; Morcrette, JJ.; Boucher, O.; Dethof, A.; Engelen, RJ.; Fisher, M.; Flentje, H.; Huneeus, N.; Jones, L.; Kaiser, JW.; Kinne, S.; Mangold, A.; Razinger, M.; Simmons, AJ.; Suttie, M.
Date of Publication (YYYY-MM-DD):2009-07
Title of Journal:Journal of Geophysical Research - Atmospheres
Journal Abbrev.:J. Geophys. Res. - Atmos.
Sequence Number of Article:D13205
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:This study presents the new aerosol assimilation system, developed at the European Centre for Medium-Range Weather Forecasts, for the Global and regional Earth-system Monitoring using Satellite and in-situ data (GEMS) project. The aerosol modeling and analysis system is fully integrated in the operational four-dimensional assimilation apparatus. Its purpose is to produce aerosol forecasts and reanalyses of aerosol fields using optical depth data from satellite sensors. This paper is the second of a series which describes the GEMS aerosol effort. It focuses on the theoretical architecture and practical implementation of the aerosol assimilation system. It also provides a discussion of the background errors and observations errors for the aerosol fields, and presents a subset of results from the 2-year reanalysis which has been run for 2003 and 2004 using data from the Moderate Resolution Imaging Spectroradiometer on the Aqua and Terra satellites. Independent data sets are used to show that despite some compromises that have been made for feasibility reasons in regards to the choice of control variable and error characteristics, the analysis is very skillful in drawing to the observations and in improving the forecasts of aerosol optical depth. [References: 37]
External Publication Status:published
Document Type:Article
Communicated by:Carola Kauhs
Affiliations:MPI für Meteorologie/Atmosphere in the Earth System
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