APPLICATION OF WRF/UCM IN THE SIMULATION OF A HEAT WAVE EVENT AND URBAN HEAT ISLAND AROUND GUANGZHOU

作     者：蒙伟光 张艳霞 李江南 林文实 戴光丰 李昊睿 

作者机构：Guangzhou Institute of Tropical and Marine MeteorologyCMA State Key Laboratory of Severe WeatherChinese Academy of Meteorological Sciences School of Environmental Science and EngineeringSun Yat-sen University 

出 版 物：《Journal of Tropical Meteorology》 (热带气象学报（英文版）)

年 卷 期：2011年第17卷第3期

页      面：257-267页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学] 

基　　金：Natural Science Foundation of China(40775068) Specialized Projects of Scientific Research for Public Welfare Industry(Meteorology) Open Projects of Key National Laboratories for Disasters-causing Weather(GYHY200706014 GYHY200906026) Science Foundation of China(2009LASW-B03) Foundation for Scientific Research on Tropical and Marine Meteorology 

主　　题：heat wave Urban Heat Island(UHI) Urban Canopy Model(UCM) numerical simulation 

摘      要：This paper evaluated the performance of a coupled modeling system,Weather Research and Forecasting(WRF)/Urban Canopy Model(UCM),in the simulation of a heat wave event which occurred around Guangzhou during late June through early July,*** from three experiments reveal that the UCM with new land data(hereafter referred to as E-UCM)reproduces the best 2-m temperature evolution and the smallest minimum absolute average error as compared with the other two experiments,the BPA-Bulk Parameterization Approach with new land data(E-BPA)and the UCM with original U.S. Geological Survey land data(E-NOU).The E-UCM is more useful in capturing the temporal and spatial distribution of the nighttime Urban Heat Island(UHI).Differences in surface energy balance between the urban and suburban areas show that low daytime albedo causes more absorption of solar radiation by urban *** to the lack of vegetation which inhibits cooling by evapotranspiration,most of the incoming energy over urban areas is partitioned into sensible heat flux and therefore heats the surface and enhances the heat *** nighttime,the energy in the urban area is mainly from soil heat *** some energy is partitioned as outgoing long wave radiation,most of the soil heat flux is partitioned into sensible heat flux due to the small latent heat flux at *** leads to the development of nighttime UHI and the increase of the magnitude and duration of heat waves within the municipality.