气候变化领域集成服务门户(CCPortal): Urbanization Effects in Estimating Surface Air Temperature Trends in the Contiguous United States

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DOI	10.3390/land13030388
	Urbanization Effects in Estimating Surface Air Temperature Trends in the Contiguous United States
	Huang, Siqi; Ren, Guoyu; Zhang, Panfeng
发表日期	2024
EISSN	2073-445X
起始页码	13
结束页码	3
卷号	13 期号:3
英文摘要	In the past century, local-scale warming caused by a strengthening urban heat island effect has brought inevitable systematic bias to observational data from surface weather stations located in or near urban areas. In this study, the land use situation around U.S. Climate Reference Network (USCRN) stations was used as a reference for rural station selection; stations with similar environmental conditions in the U.S. Historical Climatology Network (USHCN) were selected as reference stations using a machine learning method, and then the maximum surface air temperature (Tmax) series, minimum surface air temperature (Tmin) series and mean surface air temperature (Tmean) series of rural stations during 1921-2020 were compared with those for all nearby stations (including both rural and urban stations) to evaluate urbanization effects in the USHCN observation data series of the contiguous United States, which can be regarded as urbanization bias contained in the latest homogenized USHCN observation data. The results showed that the urbanization effect on the Tmean trend of USHCN stations is 0.002 degrees C dec-1, and the urbanization contribution is 35%, indicating that urbanization around USHCN stations has led to at least one-third of the overall warming recorded at USHCN stations over the last one hundred years. The urbanization effects on Tmax and Tmin trends of USHCN stations are -0.015 degrees C dec-1 and 0.013 degrees C dec-1, respectively, and the urbanization contribution for Tmin is 34%. These results have significance for understanding the systematic bias in USHCN temperature data, and they provide a reference for subsequent studies on data correction and climate change monitoring.
英文关键词	urbanization effect; surface air temperature; temperature trend; contiguous United States; observation data; machine learning
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Studies
WOS记录号	WOS:001192455200001
来源期刊	LAND
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/300099
作者单位	China Meteorological Administration; Chinese Academy of Meteorological Sciences (CAMS); China University of Geosciences; China Meteorological Administration; Jilin Normal University
推荐引用方式 GB/T 7714	Huang, Siqi,Ren, Guoyu,Zhang, Panfeng. Urbanization Effects in Estimating Surface Air Temperature Trends in the Contiguous United States[J],2024,13(3).
APA	Huang, Siqi,Ren, Guoyu,&Zhang, Panfeng.(2024).Urbanization Effects in Estimating Surface Air Temperature Trends in the Contiguous United States.LAND,13(3).
MLA	Huang, Siqi,et al."Urbanization Effects in Estimating Surface Air Temperature Trends in the Contiguous United States".LAND 13.3(2024).