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学科主题: Multidisciplinary Sciences
题名: The early-warning effects of assimilation of the observations over the large-scale slope of the "World Roof" on its downstream weather forecasting
作者: Peng, S ; Xu, X ; Shi, X ; Wang, D ; Zhu, Y ; Pu, J
通讯作者: xuxd@cams.cma.gov.cn
关键词: AWS data ; 3DVAR ; Qinghai-Xizang Plateau ; snow storm ; numerical simulation
刊名: CHINESE SCIENCE BULLETIN
发表日期: 2009
卷: 54, 期:4, 页:706-710
收录类别: sci
部门归属: [Peng ShiQiu] N Carolina State Univ, Dept Marine Earth & Atmospher Sci, Raleigh, NC 27695 USA; [Xu XiangDe; Shi XiaoHui] Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China; [Wang DongXiao] Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Trop Marine Environm Dynam, Guangzhou 510301, Guangdong, Peoples R China; [Zhu YuXiang] Training Ctr China Meteorol Adm, Beijing 100081, Peoples R China; [Wang DongXiao] China Meteorol Adm, Guangzhou Inst Trop & Marine Meteorol, Guangzhou 510080, Guangdong, Peoples R China; [Pu JingJiao] Zhejiang Inst Meteorol Sci, Hangzhou 310017, Zhejiang, Peoples R China
项目归属: LED
摘要: To improve the numerical simulation of the severe snow storms occurred in the south of China and the middle/lower reaches of Changjiang River during January of 2008, the observations from the automatic weather stations (AWS) over the Qinghai-Xizang Plateau (QXP) and its surrounding areas were assimilated into the Weather Research and Forecasts (WRF) model using multi-cycle 3-dimensional variational data assimilation (3DVAR). Due to the large-scale special topography of the QXP and its surrounding areas which may reach up to the mid-troposphere, the AWS located at different height on the deep slope of the plateau are different to those located on plains and take a role analogous in some extent to that of radio soundings in obtaining the vertical "profile" information of the atmosphere, and have the advantages in the aspects of sampling frequency, location/height fixing, and synchronization. The information captured by these AWS may carry the early-warning "strong signals" in the upstream sensitive area for the downstream weather systems to the east of the plateau and thus the assimilation of these AWS data is expected to lead to significant improvements on the simulation of the severe weather system occurred in its downstream areas through adjusting the 3-dimensional structures of the atmospheric thermal-dynamics for the initial conditions of the model. This study indicates that the assimilated information of moisture, temperature and pressure carried in the observations of AWS over the Qinghai-Xizang Plateau and its surrounding areas is very important and useful in the forecasting of precipitation in its downstream areas.
原文出处: 查看原文
WOS记录号: WOS:000263358300025
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/6149
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

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Peng, S; Xu, X; Shi, X; Wang, D; Zhu, Y; Pu, J.The early-warning effects of assimilation of the observations over the large-scale slope of the "World Roof" on its downstream weather forecasting,CHINESE SCIENCE BULLETIN,2009,54(4):706-710
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