积层混合云结构和云微物理的数值模拟

J4 ›› 2008, Vol. 26 ›› Issue (2): 74-83.

积层混合云结构和云微物理的数值模拟

邹　倩¹ ,刘奇俊²,刘卫国¹

1. 中国气象科学研究院,北京100081; 2. 国家气象中心,北京100081

收稿日期:2008-04-29 修回日期:2008-05-21 出版日期:2008-06-30 发布日期:2008-06-30
作者简介:邹倩(1982 - ) ,女,重庆人,硕士,主要从事云物理和人工影响天气研究. E-mail: zoulumi@sohu. com
基金资助:
“十一五”科技支撑课题———积层混合云人工增雨技术研究(2006BAC12B02)资助

Numer ica l S imula tion of Stra tocumulus Cloud Structure and CloudM icrophysica l Processes

ZOU Qian¹ , L IU Qijun², L IU Weiguo¹

1. Chinese Academ y ofM eteorological Science, B eijing 100081, China; 2. N ationalM eteorological Centre, B eijing 100081, China

Received:2008-04-29 Revised:2008-05-21 Online:2008-06-30 Published:2008-06-30

摘要/Abstract

摘要：

对三维非静力中尺度模式ARPS的云微物理方案进行了改进,利用改进后的模式模拟了华北地区的积层混合云降水个例,通过对模拟结果的分析并结合实况资料研究了积层混合云的降水特征、云物理结构特征和微物理过程。结果表明,积层混合云降水分布不均匀,雨区中存在多个强降水中心,云系中微物理量在水平和垂直方向上分布都不均匀,积云中的垂直液态水积分含量大大高于层云中含量,此次降水冰相过程占主导地位,霰的融化是最主要的雨生成项。

关键词: ARPS, 积层混合云, 云微物理

Abstract:

The ARPSmesoscale model is imp roved bymodifying cloud microphysical scheme. Three new p redictands and theirmicrophysical p rocesses, including the number concentration of rain (Nr) , snow (Ns) and hail (Nh) , are introduced into the model. One case of stratocumulus cloud in North China is simulated by the imp roved ARPS model. The characteristics of cloud development, p recip itation, cloud microphysical structure and cloud microphysical p rocess are investigated. The cse study suggests that the distribution of stratocumulus p recip itation is nonhomogeneouswith some p recip itation significance regions, and the cloud microphysical structure is nonhomogeneous in space. The vertical accumulating liquid water content in cumulus is higher than that in stratus; the ice phasep rocess leads this p recip itation, and the melting of graupel is the main source of rain.

Key words: ARPSmodel, stratocumulus cloud, cloud microphysics

中图分类号:

P435

邹　倩, 刘奇俊, 刘卫国. 积层混合云结构和云微物理的数值模拟[J]. J4, 2008, 26(2): 74-83.

JU 　Qian, LIU Ai-Dun, LIU Wei-Guo. Numer ica l S imula tion of Stra tocumulus Cloud Structure and CloudM icrophysica l Processes[J]. J4, 2008, 26(2): 74-83.

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