An Updated Estimate of the Urban Heat Island Effect on Observed Local Warming Trends in Mainland China's 45 Urban Stations

doi:10.2151/jmsj.2020-040

	An Updated Estimate of the Urban Heat Island Effect on Observed Local Warming Trends in Mainland China's 45 Urban Stations
	Jin, Kai 2,3; Wang, Fei 1,2,4; Zong, Quanli 3; Qin, Peng 3; Liu, Chunxia 3
刊名	JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN
	2020-08-01
卷号	98 期号:4 页码:787-799
关键词	urban heat island urbanization temperature change urban station mainland China
ISSN号	0026-1165
DOI	10.2151/jmsj.2020-040
通讯作者	Wang, Fei(wafe@ms.iswc.ac.cn)
英文摘要	Observed surface air temperature (SAT) warming at urban stations often contains both the signal of global warming and that of local urban heat island (UHF) effects; these signals are difficult to separate. In this study, an urban impact indicator (Uii) developed by the authors was modified to represent the extent to which the observed temperature from a given station was influenced by UHI effects. The Uii of a city was calculated by simplifying the city's shape to a circle. In addition, a modified Uii (MUii) was calculated by considering the realistic horizontal distribution of the urban land. We selected 45 urban stations in mainland China, along with an adjacent station for each to give a station pair. Background climate changes across each pair were near-homogeneous. Thus, differences in the trends of annual averaged daily mean SAT (Trend(mean)), maximum SAT (Trend(max)), and minimum SAT (Trend(min)) between the urban and adjacent stations (Delta Trend) could be mainly attributed to differences in MUii changes between the urban and adjacent stations (Delta MUii). Several linear regressions between Delta Trend and Delta MUii for the 45 station pairs were calculated to estimate UHI effects on Trend(mean) (UTmean), Trend(max) (UTmax), and Trend(min )(UTmin). The results showed that the mean MUii of the 45 urban stations increased from 0.06 to 0.35 during 1992-2013. Positive correlations between Delta MUii and Delta Trend for the 45 station pairs were significant at the 0.001 significance level (except for Trend(max)). The average UTmean and UTmin in of the 45 urban stations during 1954-2013 were approximately 0.05 and 0.11 degrees C decade(-1), respectively, accounting for 18 % and 31 % of the overall warming trends, respectively. The UTmin estimated in this study is about twice that of previous results based on regression equations between Uii and SAT trends.
资助项目	National Nature Science Foundation of China[41771558] ; National Key Research and Development Program of China[2016YFC0501707] ; External Cooperation Program of BIC, Chinese Academy of Sciences[16146KYSB20150001] ; European Commission Program Horizon 2020 project[635750]
WOS关键词	AIR-TEMPERATURE TRENDS ; LAND-COVER CHANGE ; SURFACE-TEMPERATURE ; BACKGROUND CLIMATE ; URBANIZATION ; IMPACT ; BIAS ; MESOSCALE ; EXPANSION ; RECORDS
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	METEOROLOGICAL SOC JAPAN
WOS记录号	WOS:000560917300005
资助机构	National Nature Science Foundation of China ; National Key Research and Development Program of China ; External Cooperation Program of BIC, Chinese Academy of Sciences ; European Commission Program Horizon 2020 project
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/158034]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Fei
作者单位	1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Beijing, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China 3.Qingdao Agr Univ, Coll Resources & Environm, Qingdao Engn Res Ctr Rural Environm, Qingdao, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Jin, Kai,Wang, Fei,Zong, Quanli,et al. An Updated Estimate of the Urban Heat Island Effect on Observed Local Warming Trends in Mainland China's 45 Urban Stations[J]. JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN,2020,98(4):787-799.
APA	Jin, Kai,Wang, Fei,Zong, Quanli,Qin, Peng,&Liu, Chunxia.(2020).An Updated Estimate of the Urban Heat Island Effect on Observed Local Warming Trends in Mainland China's 45 Urban Stations.JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN,98(4),787-799.
MLA	Jin, Kai,et al."An Updated Estimate of the Urban Heat Island Effect on Observed Local Warming Trends in Mainland China's 45 Urban Stations".JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN 98.4(2020):787-799.