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Quasi-optimal assimilation of satellite retrievals for incremental 4D-Var

Authors
Journal
Computers & Fluids
0045-7930
Publisher
Elsevier
Publication Date
Volume
46
Issue
1
Identifiers
DOI: 10.1016/j.compfluid.2010.11.016
Keywords
  • Data Assimilation
  • Incremental 4D-Var
  • Satellite Retrievals
  • Atmospheric Trace Gas Columns
Disciplines
  • Earth Science

Abstract

Abstract An interface between satellite retrievals and the incremental version of the four-dimensional variational assimilation scheme is developed, making full use of the information content of satellite measurements. In this paper, expressions for the function that calculates simulated observations from model states (called “observation operator”), together with its tangent linear version and adjoint, are derived. Results from our work can be used for implementing a quasi-optimal assimilation of satellite retrievals (e.g., of atmospheric trace gases) in operational meteorological centres.

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