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城市阻碍效应及其在上海局地台风降水研究中的应用思考
岳彩军, 唐玉琪, 顾问, 韩志惠, 王晓峰
(上海市气象科学研究所)
Urban barrier Effect and Its Application Thinking of Study on Local Typhoon Precipitation in Shanghai
Yue Caijun, Tang Yuqi, Gu Wen, Han Zhihui, Wang Xiaofeng
(Shanghai Institute of Meteorological Science)
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投稿时间:2018-09-19    修订日期:2019-03-21
中文摘要: 城市化改变了地表属性和地表特征,对天气气候影响问题越来越受到人们的重视。城市阻碍效应是城市化影响降水形成过程的可能物理机制之一。简而言之,城市阻碍效应改变了风场、风场辐合、甚至改变了天气系统本身,进而改变了湿度平流,最终影响城市降水的落区、强度。风速越大,城市阻碍效应越明显。现有关于下垫面对台风降水影响研究研究主要着重分析地形及地表状况对台风降水落区及强度的影响,但对作为下垫面因子之一的城市对台风降水的影响作用考虑明显不够。本文全面系统回顾国内外有关城市阻碍效应对降水影响研究进展,以及下垫面对台风降水影响研究进展。上海是我国城市化程度最高的城市,同时,上海平均每年受到2-3个台风影响。已有研究关注到了城市阻碍效应对上海局地台风降水影响作用,但是,对于表征台风降水的城市阻碍效应还存在明显不足。文章最后具体给出了未来有关城市阻碍效应在上海局地台风降水研究中的应用思考。
Abstract:Urbanization has changed the surface properties and characteristics, and more attention has been paid to its influence on weather and climate. The urban barrier effect is one of the possible physical mechanisms that urbanization affects the formation process of precipitation. In short, urban barrier effect changes the wind field, wind convergence, and even the weather system itself, and then changes the humidity advection, eventually affecting the urban precipitation area, intensity. The greater the wind speed, the more obvious the barrier effect of the city is. However, current studies on the effect of underlying surface on typhoon precipitation mainly focus on the impact of topography and surface conditions on typhoon precipitation area and intensity, but the influence of cities as one of underlying surface factors on typhoon precipitation is not considered enough. In this paper, the research progress on the impact of urban barrier effect on precipitation and the influence of underlying surface on typhoon precipitation are reviewed. Shanghai is the most urbanized city in China. At the same time, Shanghai is affected by 2-3 typhoons every year on average. Previous studies have focused on the influence of urban barrier effect on local typhoon precipitation in Shanghai, but there are still obvious deficiencies in characterizing the urban barrier effect of typhoon precipitation. Finally, the paper points out the application of urban barrier effect in the study of local typhoon precipitation in Shanghai in the future.
文章编号:201809190411     中图分类号:    文献标志码:
基金项目:国家自然科学基金面上项目“城市阻碍效应对上海局地台风降水落区及强度影响的可能机理研究”(41875059)
引用文本:
岳彩军,唐玉琪,顾问,韩志惠,王晓峰,0.[en_title][J].Meteor Mon,():-.
Yue Caijun,Tang Yuqi,Gu Wen,Han Zhihui,Wang Xiaofeng,0.Urban barrier Effect and Its Application Thinking of Study on Local Typhoon Precipitation in Shanghai[J].Meteor Mon,():-.