Numerical simulation for the coupling effect of local atmospheric circulations over the area of Beijing,Tianjin and Hebei Province

作     者：LIU ShuHua LIU ZhenXin LI Ju WANG YinChun MA YanJun SHENG Li LIU HePing LIANG FuMing XIN GuoJun WANG JianHua 

作者机构：Department of Atmospheric SciencesSchool of PhysicsPeking UniversityBeijing 100871China Institute of Beijing Urban MeteorologyChina Meteorological AdministrationBeijing 100089China Institute of Shenyang Atmospheric EnvironmentChina Meteorological AdministrationShenyang 110016China Department of PhysicsAtmospheric Sciences&General ScienceJackson State UniversityP.O.Box 17660JacksonMS 39217-0195USA 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：2009年第52卷第3期

页      面：382-392页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

基　　金：Supported by Central Public Welfare Special Fund Program for the Institute and Higher Education (Grant No. IUMKY200701) Public Welfare Special Fund Pro-gram (Meteorology) of China Scientific and Technological Ministry (Grant Nos. CYHY20080620, CYHY200706004) Spread New Technology Program of China Meteorological Administration (Grant No. CMATG2007M15) Urban Meteorol-ogy Scientific Research Fund Program of the Institute of Beijing Urban Meteorology, China Meteorological Administration (Grant No. UMRF200702) 

主　　题：Beijing-Tianjin-Hebei Mountain Valley Breeze Sea Land Breeze urban heat island circulation numerical simulation 

摘      要：Using the model system MM5.V3 and multi-layer grid nesting technique, we have done a multi-scale numerical simulation over the area of Beijing, Tianjin and Hebei Province to analyze the temperature and wind field there and study its local circulations. The results show a coupling effect of Urban Heat Island Circulation (UHIC), Mountain Valley Breeze (MVB) and Sea Land Breeze (SLB) occurs in this area when the synoptic system is weak. The SLB can penetrate deep into the mainland for about 200 km when it is blooming. MVB can extend to south and cover almost the whole plain area in Beijing. Both MVB and SLB are diurnal periodical; meanwhile the phase of MVB drops behind that of SLB for about six hours. As a local circulation, the UHIC weakens the two circulations above, and it also has a diurnal period. As a result, the coupling effect of circulations reveals not only different features in spring-summer period and autumn-winter period in a year but also the difference between early morn- ing to noonday and afternoon to night in a day. We noted the diffusion of contamination over the area around Beijing, and found the steady presence of a transport routine of contamination over North-China throughout the year caused by the Coupling Effect mentioned above. This find is important for studying the environment pollution in this area.