ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 45 Issue 11 > 2019,45(11):1611-1620. DOI:10.7519/j.issn.1000-0526.2019.11.011 Prev Next
Study of Urban Barrier Effect on Local Typhoon Precipitation
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Abstract:
Urbanization has changed the surface properties and characteristics, and more attentions have been paid to its influence on weather and climate. The urban barrier effect is one of the possible physical mechanisms for the urbanization to influence the formation process of precipitation. The urban barrier effect changes the wind field, wind convergence and even the weather system itself, and further changes the humidity advection, eventually affecting the urban precipitation location and intensity. The greater the wind speed, the more obvious the barrier effect of the city. 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 location and intensity, but the influence of cities as one of underlying surface factors on typhoon precipitation has not been 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, and it 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.
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