HR: 11:20h
AN: A12B-05    [Abstracts]
TI: 4D-Var Atmospheric Data Assimilation and Flux Inversion Using Current and Future CO2 In- Situ and Satellite Observations
AU: * Engelen, R J
EM: richard.engelen@ecmwf.int
AF: ECMWF, Shinfield Park, Reading, RG2 9AX, United Kingdom
AU: Serrar, S
EM: Soumia.Serrar@ecmwf.int
AF: ECMWF, Shinfield Park, Reading, RG2 9AX, United Kingdom
AU: Chevallier, F
EM: frederic.chevallier@cea.fr
AF: LSCE, L'Orme des Merisiers, Bat 701, Point courrier 129, Gif sur Yvette, 91191, France
AB: Under the umbrella of European Global Monitoring for Environment and Security (GMES) the Global and regional Earth-system (Atmosphere) Monitoring using Satellite and in-situ data (GEMS) project has been running since March 2005. An important part of the GEMS project is the building of a monitoring system for atmospheric greenhouse gases and their surface fluxes. The system consists of a 4-dimensional variational (4D-Var) atmospheric data assimilation system embedded in the ECMWF operational weather data assimilation system, a 4D-Var flux inversion system that uses the output of the atmosphere system, and relevant validation efforts. In this presentation we will present first results for CO2 using data from the Atmospheric Infrared Sounder (AIRS) for 2003. Atmospheric fields will be shown with a particular emphasis on validation with indepedent data. Strengths and weaknesses of the system will be discussed. We will also present early flux inversion results. Finally, expectations for the near future using data from IASI, OCO, and GOSAT will be discussed to illustrate the full potential of the system.
DE: 0322 Constituent sources and sinks
DE: 0368 Troposphere: constituent transport and chemistry
DE: 0428 Carbon cycling (4806)
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting