气候变化领域集成服务门户(CCPortal): Impacts of Continuously Increasing Urbanization Ratios on Warming Rates and Temperature Extremes Observed Over the Beijing Area

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DOI	10.1029/2021JD034536
	Impacts of Continuously Increasing Urbanization Ratios on Warming Rates and Temperature Extremes Observed Over the Beijing Area
	Jiang S.; Du J.; Wei Z.
发表日期	2021
ISSN	2169897X
卷号	126 期号:11
英文摘要	Evaluations of the impacts of increasing urbanization ratios on air temperatures are less quantitative and accurate due to the lack of high-resolution land cover data sets. Here, based on the latest released high-resolution (30-m) land cover data from 1985 to 2017, annual urbanization ratios around each station in Beijing were calculated. Warming rates and temperature extremes were compared between nonrural stations (17 stations with continuously increasing urbanization ratios) and purely rural stations (3 stations with continuous urbanization ratios of zero). Although urbanized areas only occupied 22.2% of the total area in Beijing, urbanization ratios at nonrural stations already reached an average of 62.4% (10 km2)−1 in 2017, and their average rate reached 15.1% (10 km2)−1 decade−1. From 1985 to 2017, each 10% increase in the urbanization ratio with 10 km2 had led to additional annual warming of 0.14 ± 0.11, 0.17 ± 0.08, and 0.30 ± 0.17°C at nonrural stations for daily maximum (Tmax), mean (Tmean), and minimum (Tmin) air temperatures, respectively. Meanwhile, each 10% increase in the urbanization ratio with 10 km2 had led to additional changes of 11.6 ± 5.1, 12.7 ± 5.8, and −11.1 ± 5.2 days at nonrural stations for hot days, hot nights, and chilly nights, respectively. Additionally, the inner-annual urbanization contributions to the warming increased significantly at rates of 10.7% decade−1 and 14.1% decade−1 for Tmean and Tmin, and reached 49.0% and 52.6% in 2017, respectively. The inner-annual urbanization contributions to the increasing hot nights and the decreasing chilly nights changed at rates of 16.7% decade−1 and 15.6% decade−1, and reached 57.8% and 53.1% in 2017, respectively. © 2021. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185141
作者单位	Department of Geography and Spatial Information Techniques, Ningbo University, Ningbo, China; School of Environment, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Beijing Normal University, Beijing, China; School of Atmospheric Sciences, Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University, Guangzhou, China
推荐引用方式 GB/T 7714	Jiang S.,Du J.,Wei Z.. Impacts of Continuously Increasing Urbanization Ratios on Warming Rates and Temperature Extremes Observed Over the Beijing Area[J],2021,126(11).
APA	Jiang S.,Du J.,&Wei Z..(2021).Impacts of Continuously Increasing Urbanization Ratios on Warming Rates and Temperature Extremes Observed Over the Beijing Area.Journal of Geophysical Research: Atmospheres,126(11).
MLA	Jiang S.,et al."Impacts of Continuously Increasing Urbanization Ratios on Warming Rates and Temperature Extremes Observed Over the Beijing Area".Journal of Geophysical Research: Atmospheres 126.11(2021).