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Evolution of moist potential vorticity during a warm-zone heavy rainfall event in the Pearl River Delta |
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| Authors: | LI Jiang-nan YE Ai-fen XU Yong-hui WU Zhi-fang HE Ru-yi and CAI Rong-shuo |
| Institution: | 1. School of Environmental Science and Engineer,Sun Yat-sen University,Guangzhou 510275 China 2. School of Environmental Science and Engineer,Sun Yat-sen University,Guangzhou 510275 China;Guangzhou Meteorological Observatory,Guangzhou 510080 China 3. Huadu District Bureau of Meteorology,Guangzhou 510800 China; 4. Guangzhou Meteorological Observatory,Guangzhou 510080 China 5. Key Laboratory of Global Change and Marine-Atmospheric Chemistry,Third Institute of Oceanography,State Oceanic Administration of China,Xiamen 361005 China |
| Abstract: | First,based on routine meteorological data,the synoptic characteristics of a heavy warm-sector rainfall that occurred on June 13,2008 in the Pearl River Delta were analyzed.Second,a mesoscale numerical model,Weather Research and Forecasting(WRFV2.2),was used to simulate the heavy rainfall. Diagnostic analyses were done of moist potential vorticity(MPV)for its horizontal components(MPV2) and vertical components(MPV1)based on the simulation results of WRFV2.2 to identify the mechanism of the rainfall developm... |
| Keywords: | heavy rainfall MPV(moist potential vorticity) numerical simulation |
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