气候变化领域集成服务门户(CCPortal): Urbanization has stronger impacts than regional climate change on wind stilling: A lesson from South Korea

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DOI	10.1088/1748-9326/ab7e51
	Urbanization has stronger impacts than regional climate change on wind stilling: A lesson from South Korea
	Chen X.; Jeong S.; Park H.; Kim J.; Park C.-R.
发表日期	2020
ISSN	17489318
卷号	15 期号:5
英文摘要	Wind stilling has been observed in many regions across the Northern Hemisphere; however, the related mechanisms are not well understood. Analyses of the wind speed variations in South Korea during 1993-2015 in this study reveal that the annual-mean surface wind speeds at rural stations have increased by up to 0.41 m s-1 decade-1, while those at urban stations have decreased by up to-0.63 m s-1 decade-1. The local wind speed variations are found to be negatively correlated with the population density at the corresponding observation sites. Gustiness analyses show the increase in local surface roughness due to urbanization can explain the observed negative wind speed trends at urban stations as the urbanization effect overwhelms the positive wind speed trend due to climate change. The observed negative wind speed trend in urban areas are not found in the regional climate model simulations in the Coordinated Regional Climate Downscaling Experiment-East Asia (CORDEX-EA) as these models do not take into account the impact of urbanization on wind variations during the period. This study suggests that urbanization can play an important role in the recent wind stilling in rapidly developing regions such as South Korea. Our results suggest that future climate projections in CORDEX-EA may overestimate wind speeds in urban areas, and that future regional climate projections need to consider the effects of urbanization for a more accurate projection of wind speeds. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	CORDEX-EA; South Korea; surface roughness; urbanization; wind stilling
语种	英语
scopus关键词	Climate models; Population statistics; Speed; Surface roughness; Urban growth; Wind; Developing regions; Future climate projections; Northern Hemispheres; Population densities; Regional climate changes; Regional climate model simulation; Regional climate projections; Wind speed variations; Climate change; climate modeling; downscaling; gust; population density; regional climate; surface roughness; surface wind; urbanization; wind velocity; Far East; South Korea
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154039
作者单位	Department of Environmental Planning, Graduate School of Environmental Studies, Seoul National University, Seoul, 08826, South Korea; Institute for Sustainable Development, Seoul National University, Seoul, 08826, South Korea; Climate Research Division, National Institute of Meteorological Sciences, Seogwipo, 63568, South Korea; Urban Forests Research Center, National Institute of Forest Science, Seoul, 02455, South Korea
推荐引用方式 GB/T 7714	Chen X.,Jeong S.,Park H.,et al. Urbanization has stronger impacts than regional climate change on wind stilling: A lesson from South Korea[J],2020,15(5).
APA	Chen X.,Jeong S.,Park H.,Kim J.,&Park C.-R..(2020).Urbanization has stronger impacts than regional climate change on wind stilling: A lesson from South Korea.Environmental Research Letters,15(5).
MLA	Chen X.,et al."Urbanization has stronger impacts than regional climate change on wind stilling: A lesson from South Korea".Environmental Research Letters 15.5(2020).