NUMERICAL STUDY ON CLOUD PHYSICAL PROCESSES OF HEAVY RAINFALL IN SOUTH CHINA

Wang Pengyun; Ruan Zheng; Kang Hongwen

Vol.13, NO.1, 2002

Article Contents

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Wang Pengyun, Ruan Zheng, Kang Hongwen. Numerical study on cloud physical processes of heavy rainfall in South China. J Appl Meteor Sci, 2002, 13(1): 78-87.

Citation:

Wang Pengyun, Ruan Zheng, Kang Hongwen. Numerical study on cloud physical processes of heavy rainfall in South China. J Appl Meteor Sci, 2002, 13(1): 78-87.

Wang Pengyun, Ruan Zheng, Kang Hongwen. Numerical study on cloud physical processes of heavy rainfall in South China. J Appl Meteor Sci, 2002, 13(1): 78-87.

Citation:

Wang Pengyun, Ruan Zheng, Kang Hongwen. Numerical study on cloud physical processes of heavy rainfall in South China. J Appl Meteor Sci, 2002, 13(1): 78-87.

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NUMERICAL STUDY ON CLOUD PHYSICAL PROCESSES OF HEAVY RAINFALL IN SOUTH CHINA

Chinese Academy of Meteorological Sciences, Beijing 100081

Received Date: 2000-04-18
Rev Recd Date: 2000-06-13
Publish Date: 2002-02-28

Abstract

Abstract

The heavy rainfall IOP case of the HUAMEX project during 23—24 May 1998 is simulated by using the non-hydrostatic meso-scale model MM5 (V2). Results show that the cold cloud process in which ice phase is coexisted with super-cooled liquid phase of cloud water plays the most important role in the formation and development of convective heavy rainfall in South China. The warm process (condensation and aggregation of liquid droplets) for the formation and development of rains in South China may play a role only for the non-convective precipitation with larger scale but not very strong intensity.
- Heavy rainfall in South China;
- MM5;
- Cold cloud process

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References(13)

Figures and Tables

图 1 (a)1998 年5 月23 日20:00~24 日20:00 广东省降水量(单位mm)

(b)模式预报的中网格区域24 h 降水量(等值线间隔20 mm)

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图 2 (a)模拟网域设置(b)中网格地表植被分布

(数字代表:(2)农耕区，(5)亚热带灌木，(7)水，(9)阔叶林，(10)针叶林，(13)针阔混合林)

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图 3 四会、南海、新会、中山站逐时雨量分布

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4(a) 模式预报中网格区域每3 h 降水量(等值线间隔10 mm)

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4(b) 模拟最大降水中心逐时雨量分布

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图 5 通过图 1(b)中AB 线段的云水、冰晶、雪、霰和雨水的混合比垂直剖面(图中等值线单位10 ^-5kg/ kg)

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图 6 5-D 可视化系统显示的1998 年5 月24 日01:00 通过雨区的南北方向垂直剖面

(图中等值线和阴影部分分别为:a.云水；b.霰；c.雨水；d.θ_e。纵坐标为气压，自1000 hPa 向上到10 hPa，共25 层)

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References

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