南京大学学报（自然科学版）2016，Vol.52Issue(6)：1016-1028,13.DOI:10.13232/j.cnki.jnju.2016.06.005
利用GRAPES-UCM模式对广州典型污染天气过程的数值模拟研究
Study on the numerical simulation of the typical polluted weather process in Guangzhou using GRAPES-UCM
摘要
Abstract
Several cases are simulated by using GRAPES coupled with the single-layer urban canopy model(UCM)and the results are tested with the UCM intensified observation.The results show that urban canopy effect raise the city temperature by 1.2 ℃,and increase the sensible heat by 163%,and the intensity of the urban heat island is enhanced by 1 .3 ℃;the effect reduce urban wind speed by 1 6%,and increase the fluctuations;the results of simulating urban surface temperature,wind speed,net radiation flux and sensible heat by GRAPES-UCM are closer to the observations.Calm wind near surface,stable layer(temperature inversion)and the convergence of surface wind cause the accumulation of the pollutants and lead to high PM2.5 concentration and low visibility.High temperature related to peripheral downdraft of typhoon is conductive to the occurrence of high O3 events.The simulation of urban land cover will be elevated by introducing UCM to the GRAPES and GRAPES-UCM does better when simulating weather conditions of polluted days.关键词
空气污染/城市冠层/GRAPES气象模式/气象条件Key words
air pollution/urban canopy/GRAPES meteorological model/meteorological condition分类
天文与地球科学引用本文复制引用
姚帅,蒋德海,张艳霞,李菲,邓雪娇,王宝民..利用GRAPES-UCM模式对广州典型污染天气过程的数值模拟研究[J].南京大学学报（自然科学版）,2016,52(6):1016-1028,13.基金项目
国家自然科学基金(41475105,41105006),国家科技支撑计划课题(2014BAC16B06),科技部公益性(气象)行业项目(GYHY201306042),广东省科技计划项目(2015A020215020),广东省气象局科技创新团队计划(201506),广东省自然科学基金博士启动项目(S2011040002251),城市气象科学研究基金(IUMKY&UMRF201110) （41475105,41105006）
