气候变化领域集成服务门户(CCPortal): Varied degrees of urbanization effects on observed surface air temperature trends in China

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DOI	10.3354/cr01531
	Varied degrees of urbanization effects on observed surface air temperature trends in China
	Jin K.; Wang F.; Yu Q.; Gou J.; Liu H.
发表日期	2018
ISSN	0936-577X
起始页码	131
结束页码	143
卷号	76 期号:2
英文摘要	Debates over the bias in regional climate records caused by urbanization effects continue, and the diverse estimates of this bias can be partly attributed to different study methods and materials. In this study, we proposed an index (the extent of urban impact, EUI) by quantifying urbanization effects in terms of urban area and station location relative to urbanized areas. The EUI was used to represent the extent of urban impact on the meteorological stations used for observing temperature. Based on the EUI quantification, 569 stations in China were classified into 3 categories: Stations with little or no urban impact (R stations), stations with low urban impact (LU stations), and stations with high urban impact (HU stations). Results show that, on average, EUIs for R, LU, and HU stations were 0.3, 2.6, and 15.3%, respectively, implying diverse urbanization influences on the studied stations. Using R stations as a baseline, the average urbanization effects on the warming trend of surface air temperature (SAT) for China during 1961-2012 for the LU and HU stations were estimated to be 0.06 and 0.09°C decade-1, respectively. Therefore, including LU and HU stations to estimate regional SAT trends would lead to notable biases. The bias of the urbanization effect in the average SAT trend of China based on all stations was estimated to be 0.05°C decade-1, accounting for 18% of the overall warming over the period 1961-2012. This estimation should be considered the lowest range of the bias. This study highlights the necessity of considering urbanization effect biases when assessing regional climate change. © 2018 Inter-Research.
英文关键词	China; Climate change; Station classification; Surface air temperature; Urbanization effect
语种	英语
来源期刊	Climate Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146956
作者单位	Institute of Soil and Water Conservation, Northwest A and F University, Yangling Shaanxi, 712100, China; Institute of Soil and Water Conservation, Chinese Academy of Sciences, Ministry of Water Resources, Yangling Shaanxi, 712100, China; University of Chinese Academy of Sciences, Beijing, 100049, China; College of Natural Resources and Environment, Northwest A and F University, Yangling Shaanxi, 712100, China
推荐引用方式 GB/T 7714	Jin K.,Wang F.,Yu Q.,et al. Varied degrees of urbanization effects on observed surface air temperature trends in China[J],2018,76(2).
APA	Jin K.,Wang F.,Yu Q.,Gou J.,&Liu H..(2018).Varied degrees of urbanization effects on observed surface air temperature trends in China.Climate Research,76(2).
MLA	Jin K.,et al."Varied degrees of urbanization effects on observed surface air temperature trends in China".Climate Research 76.2(2018).