2009年一次连续性暴雨过程的诊断分析和数值模拟

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Abstract According to WRF mesoscale model,numerical simulation and diagnostic analysis for rainstorm weather process are carried out on 24th to 27th July,2009 in Hunan province.The simulation results show that the central position and intensity of rainstorm are basically identical with practical situation,but precipitation range is actually larger.According to diagnostic analysis on WRF output physical quantity,it finds out the rainfall area is relative to maximum area of potential pseudo-equivalenttemperature.The vorticity (divergence) low level convergence and high level divergence of high altitude are configured to provide dynamic condition of heavy rainfall.Combined with NCEP analysis field,energy field and water vapor condition,high value area of potential pseudo-equivalent temperature and maximum convergence center of moisture flux divergence has a good consistency with rainfall area,which show that WRF mesoscale model and NCEP analysis possesses the fairly indication for the continuous rainstorm.

Key words： rainstorm numerical simulation diagnostic analysis potential pseudo-equivalent temperature water vapor flux divergence　

Received: 07 August 2012

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P458.121.1

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	Articles by authors
	Lin Mingli
	Ouyang Yeneng
	Qu Youming
	Lin Xi
	Gu Qian

Cite this article:

Lin Mingli,Ouyang Yeneng,Qu Youming等. Diagnostic analysis and numerical simulation on a continuous heavy rainfall in 2009[J]. Meteorological Hydrological and Marine Instrument, 2013, 30(1): 36-40.

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http://www.qxswhy.com/EN/ OR http://www.qxswhy.com/EN/Y2013/V30/I1/36

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