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Proceedings Paper

Circulation background of the extremely heavy rain causing severe floods in Huaihe River valley in 2003 and its relationship to the apparent heating
Author(s): Lijuan Wang; Zhaoyong Guan; Chunhua Shi; Lianji Jin; Jiaqing Ma
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Paper Abstract

Based on NCEP/NCAR daily reanalysis data and precipitation data, the circulation background of the extremely heavy rain causing severe floods in Huaihe River valley (HHRV) in 2003 and its relationships to the apparent heating were analyzed. The results showed that the El Nino events with middling intensity during 2002~2003 was the previous background of this extremely heavy rain. The abnormal apparent heating source (Q1) and vapor sink (Q2) may be one of the important causes for subtropical high maintaining southward than usual. Compared with summer in 2003, the positive abnormal (Q1) and (Q2) were located to the HHRV during June 21~July 22. The centers of high value bands of (Q1) and (Q2) were in agreement with those of rainfall. But the negative abnormal (Q1) and (Q2) were situated in South China and most of South China Sea areas. The abnormal heating source over the Bay of Bengal forced an abnormal anticyclonic circulation over its northwest high level leading to the South Asian High enhancing and maintaining over the Tibetan Plateau, the south of Yangtze River valley and South China, so HHRV areas just located the updraft areas which was in the south of the high-level jet, making for heavy rain and severe floods.

Paper Details

Date Published: 10 September 2008
PDF: 10 pages
Proc. SPIE 7085, Atmospheric and Environmental Remote Sensing Data Processing and Utilization IV: Readiness for GEOSS II, 70851B (10 September 2008); doi: 10.1117/12.792340
Show Author Affiliations
Lijuan Wang, Nanjing Univ. of Information Science & Technology (China)
Zhaoyong Guan, Nanjing Univ. of Information Science & Technology (China)
Chunhua Shi, Nanjing Univ. of Information Science & Technology (China)
Lianji Jin, Nanjing Univ. of Information Science & Technology (China)
Jiaqing Ma, Lishui Meteorological Bureau (China)


Published in SPIE Proceedings Vol. 7085:
Atmospheric and Environmental Remote Sensing Data Processing and Utilization IV: Readiness for GEOSS II
Mitchell D. Goldberg; Hal J. Bloom; Philip E. Ardanuy; Allen H.-L. Huang, Editor(s)

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