气象科学2011，Vol.31Issue(3)：305-312,8.
土地利用城市化对珠三角炎热天气的影响
Impact of land use changes after urbanization on meso-scale simulation of a hot episode in Pearl River Delta
摘要
Abstract
The land use pattern has significant influence on the accuracy of MM5 simulation results.Different land use patterns, with different surface roughness, albedo, heat capacity and effective humidity, result in different simulated surface heat and vapor fluxes and would in turn affect the simulation results of meteorological fields of upper atmosphere through vertical turbulent transport.Using the satellite remote sensing data in 2001, the old global 24-category land usc pattern in the Pearl River Delta region in the MM5 system was updated.In the sensitivity test, the land use pattern in the Pearl River Delta region was set to a broadleaved evergreen forest and an urban area separately, and the simulated temperature, wind and other meteorological fields in the two cases were very different.The differences between the simulated meteorological fields using the land use pattern in 1993 and 2001 were analyzed and compared with observation data.It is found that the land use pattern in 2001 can greatly improve the accuracy of MM5 simulation results and the urban land use pattern causes the near-surface temperature to increase and vapor mixing ratio to decrease in the urban region.关键词
MM5模式/土地利用类型/城市化进程/模拟气象场Key words
Model MM5/ Land use pattern/ Urbanization/ Simulated meteorological fields分类
天文与地球科学引用本文复制引用
詹杰民,唐灵,李毓湘,林嘉仕,於伟琼..土地利用城市化对珠三角炎热天气的影响[J].气象科学,2011,31(3):305-312,8.基金项目
香港理工大学大气与都市空气污染策略研究发展计划 （）
国家自然科学基金资助项目(40476012) （40476012）
