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Proceedings Paper

Application of ATOVS radiance assimilation to numerical simulation of a mesoscale heavy rainfall
Author(s): Huang Bing; Bai Jie; Li Wei; Xiaoting Wang
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Paper Abstract

Based on ATOVS data and conventional sounding data, two assimilation experiments are performed to simulate a heavy rainfall over the middle-lower reaches of Yangtze River and the east of southwest China from June 22 to 24 in 2004 by using model MM5. In the NOATOVS experiment, only conventional sounding data are assimilated based on the successive correction scheme, while in the ATOVS experiment, the ATOVS radiance data are assimilated by using the GRAPES (Global and Regional Assimilation and Prediction System) 3D-Var system. The effect of the radiance data on the background field is analyzed. It indicates that direct assimilation of ATOVS radiance data could improve the temperature, humidity and wind fields within the troposphere. Moreover, the comparison between the results of the two experiments shows that ATOVS experiment can not only simulate the circulation pattern well, but also describe the intensity and the distribution of the rainfall better than the NOATOVS experiment.

Paper Details

Date Published: 15 August 2011
PDF: 7 pages
Proc. SPIE 8203, Remote Sensing of the Environment: The 17th China Conference on Remote Sensing, 82031G (15 August 2011); doi: 10.1117/12.910435
Show Author Affiliations
Huang Bing, Beijing Univ. (China)
Beijing Aviation Meteorology Institute (China)
Bai Jie, Beijing Aviation Meteorology Institute (China)
Li Wei, Beijing Aviation Meteorology Institute (China)
Xiaoting Wang, Beijing Aviation Meteorology Institute (China)

Published in SPIE Proceedings Vol. 8203:
Remote Sensing of the Environment: The 17th China Conference on Remote Sensing
Qingxi Tong; Xingfa Gu; Boqin Zhu, Editor(s)

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