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Proceedings Paper

Adaptive tuning of background error and satellite radiances observation error for operational variational assimilation
Author(s): Wei Han; Jishan Xue
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Paper Abstract

This paper proposed a new implementation of error tuning algorithm based on the posterior diagnosis of variational assimilation system by applying a iterative fixed-point procedure. The method is shown to be feasible in a practical tuning of background and observation error for operational variational assimilation. The iteration process converges very rapidly and the results are reasonable .The results are illustrated by utilizing the Chinese Meteorological Administration (CMA) new generation of NWP system GRAPES (Global/Regional Assimilation PrEdiction System) regional-meso version over the East Asia domain. The impacts of the tuning of background and satellite radiances observation error on analyses and forecasts are shown and discussed. The results are very promising.

Paper Details

Date Published: 14 November 2007
PDF: 9 pages
Proc. SPIE 6790, MIPPR 2007: Remote Sensing and GIS Data Processing and Applications; and Innovative Multispectral Technology and Applications, 679044 (14 November 2007); doi: 10.1117/12.774771
Show Author Affiliations
Wei Han, Chinese Academy of Meteorological Sciences (China)
Jishan Xue, Chinese Academy of Meteorological Sciences (China)


Published in SPIE Proceedings Vol. 6790:
MIPPR 2007: Remote Sensing and GIS Data Processing and Applications; and Innovative Multispectral Technology and Applications

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