Derivation of A New Diagnostic Equation of Stream Function and Application to Severe Rainstorm in Changjiang and Huai River Regions

ZHAI Wu-quan;ZHENG Lan-zhi;SHI Chun-e;LI Guo-jie;ZHAO Jian-yong

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Plateau Meteorology ›› 2005, Vol. 24 ›› Issue (1) : 56-61.

Derivation of A New Diagnostic Equation of Stream Function and Application to Severe Rainstorm in Changjiang and Huai River Regions

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Abstract

A new stream function diagnostic equation, which is suitable for describing the transverse circulation in frontal zone (Y-P cross-section) is derived, the physical meaning and effect of its various force functions in the diagnostic equation are analyzed, and it is validated by the intensive observational data in HUBEX. Based on the diagnostic equation, we designed a integrated analysis chart on a 2-D cross-section that can describe the character of vertical circulation in frontal zone, and concluding three kinds of concept models on vertical circulation, which can give better directions to the forecast of the storm rainfall in flood season of Changjiang and Huai River regions.

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Stream function diag / Vertical circulation / Severe rainstorm in

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ZHAI Wu-quan , ZHENG Lan-zhi , SHI Chun-e , LI Guo-jie , ZHAO Jian-yong. Derivation of A New Diagnostic Equation of Stream Function and Application to Severe Rainstorm in Changjiang and Huai River Regions. Plateau Meteorology. 2005, 24(1): 56-61

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