全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
大气科学  2008 

A Numerical Simulation Study of Mesoscale Rainy-Cluster Producing Heavy Rainfall in Lower Latitude Plateau during Early Summer
低纬高原地区一次强降水过程的中尺度雨团数值模拟研究

Keywords: heavy rainfall,mesoscale rainy-cluster,Yunnan Province,numerical simulation
强降水
,中尺度雨团,低纬高原,数值模拟

Full-Text   Cite this paper   Add to My Lib

Abstract:

Based on the successful diagnostic study,numerical simulation was conducted for better understand of heavy rainfall in lower latitude plateau from 0000 UTC 31 May to 0000 UTC 1 June 2001.Due to successful reproducing of large-scale circulation,precipitation and rainy-cluster area,there existed the probability to study one of the rainy-clusters causing heavy rainfall by using the high resolution output data from the numerical model.It shows that the obvious mesoscale dynamical and thermodynamic structure inside the rainy-cluster defined as rainy-cluster A can be found during its development even though there was no obvious closed vortex in the wind field.The positive vortex maximum occurred earlier than rainy-cluster A,and the intensifying of ascending motion resulted from the horizontal convergence in the lower troposphere.The formation of rainy-cluster A was related not only to mesoscale convergence lines near the ground,but also to the special topography in the lower latitude plateau,especially,in Yunnan Province.The southern wind played an important role in the formation and the development of rainy-cluster A.And the appearance and evolution of rainy-cluster A was also related closely to the Indian-Myanmar trough at 500 hPa.The analysis of water vapor shows,there existed the pronounced horizontal and vertical water vapor convergence before the mature stage of rainy-cluster A,and the water vapor came mainly from the Bay of Bengal.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133