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Proceedings Paper

Propagation characters of baroclinic waves in the upper troposphere during the period of rainstorm in Yangtze and Huaihe Valley
Author(s): Shilong Mei; Zhaoyong Guan; Shanshan Zhong
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Paper Abstract

Based on NCEP/NCAR reanalysis daily atmosphere data along with 740 stations precipitation data in China, we have choosed two typical strong Meiyu years(1998 and 2003) and analyzed propagation characters of baroclinic waves at upper troposphere during Meiyu period of these years. The results indicate that baroclinic waves of these years have obvious downstream development effect during Meiyu period. These waves develop near entrance of westerly jet about 3 days before rainstorm happens, then propagate downstream from northwest to southeast and reach the valley at the day that rainstorm happens. Energy dispersion associated with these wave packets has significant impact on happening and development of rainstorm. Characters of baroclinic waves during non-Meiyu period are also studied, however, we fail to find distinct downstream development effect in both years.

Paper Details

Date Published: 9 October 2007
PDF: 9 pages
Proc. SPIE 6679, Remote Sensing and Modeling of Ecosystems for Sustainability IV, 66790U (9 October 2007); doi: 10.1117/12.728076
Show Author Affiliations
Shilong Mei, Nanjing Univ. of Information Science and Technology (China)
Zhaoyong Guan, Nanjing Univ. of Information Science and Technology (China)
Shanshan Zhong, Nanjing Univ. of Information Science and Technology (China)


Published in SPIE Proceedings Vol. 6679:
Remote Sensing and Modeling of Ecosystems for Sustainability IV
Wei Gao; Susan L. Ustin, Editor(s)

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