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Analysis of the Rainstorm Falling Zone in Guangxi during Influence Period of the 0906 Typhoon "Molave"
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作者 HU Yong-lin ZHONG Tao HONG Zhan 《Meteorological and Environmental Research》 CAS 2012年第3期26-29,38,共5页
[ Objective] The research aimed to analyze rainstorm falling zone in Guangxi during influence period of the 0906 typhoon " Molave". [ Method] For the heavy precipitation falling zone in southern and central parts of... [ Objective] The research aimed to analyze rainstorm falling zone in Guangxi during influence period of the 0906 typhoon " Molave". [ Method] For the heavy precipitation falling zone in southern and central parts of Guangxi after 0906 typhoon " Molave" landed, 500 hPa circula- tion, physical quantity field, satellite cloud chart and terrain effect were analyzed. [ Result] 500 hPa subtropical high caused asymmetry of the "Me- lave" circulation, playing a key role for the strong precipitation falling zone in Guangxi. Physical quantity field analysis pointed out that after " Me- lave" landed, water vapor convergence center was in southeast Guangxi, providing adequate moisture condition for the heavy precipitation in south- ern and central parts of Guangxi. The maximum positive vorticity center appeared at the middle and low layers in southern and central parts of Guangxi for a long time. At 200 hPa, there was a maximum divergence center. At 700 hPa, there was a maximum convergence center. High-level divergence and low-level convergence created conditions for heavy precipitation in the region. From satellite cloud chart, the heavy precipitation fall- ing zone related to asymmetric structure of the ~ Molave". In addition, uplifting effect of the terrain was conducive to occurrence of the large precipi- tation. [ Conclusion] The research provided reference for reduction and prevention of this kind of heavy precipitation. 展开更多
关键词 Typhoon rainstorm Subtropical high Asymmetric structure Physical quantity field satellite cloud chart Terrain effect China
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