气候变化领域集成服务门户(CCPortal): High-Resolution Land Surface Modeling of the Effect of Long-Term Urbanization on Hydrothermal Changes Over Beijing Metropolitan Area

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DOI	10.1029/2021JD034787
	High-Resolution Land Surface Modeling of the Effect of Long-Term Urbanization on Hydrothermal Changes Over Beijing Metropolitan Area
	Ji P.; Yuan X.; Liang X.-Z.; Jiao Y.; Zhou Y.; Liu Z.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:18
英文摘要	The impacts of urbanization on terrestrial thermal and hydrological changes should be considered for sustainable development of urban environment and economy. However, previous studies mainly focused on the impacts at short time scales, which is insufficient to provide the needed information. This study augmented the high-resolution Conjunctive Surface-Subsurface Process version 2 (CSSPv2) land model with an urban canopy model that incorporates domestic wastewater recharge (DWWR) and dynamical impervious surface area (ISA) to develop a new CSSPv2_Urban model and conducted 38-year simulations over the Beijing metropolitan area at 1 km resolution to quantify the urbanization impacts. Compared with CSSPv2, CSSPv2_Urban decreases the root-mean-square errors in surface latent/sensible heat fluxes, near-surface air temperature and land surface temperature by 15%–66%, increases Kling-Gupta efficiency for streamflow by 27%–34%, and reproduces the observed long-term trends of land surface temperature and streamflow. It also reduces the corresponding errors in the modern reanalysis products by up to 70%. The model sensitivity analyses showed that the urbanization over Beijing area contributed to 31% of the surface warming during 1979–2017 and kept the warming trend over the new development zone during 2000–2013 when global warming slowed down. Although the large fraction of ISA in the city center increased streamflow by generating more surface runoff, 39%–62% of the increasing trend of streamflow was caused by the increased DWWR. Our study highlights the importance of the urban heat island effect from a climatological perspective and suggests that the influences of urbanization on streamflow may be underestimated if ignoring DWWR. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	domestic wastewater recharge; high-resolution modeling; impervious surface; land surface temperature; streamflow; urban
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/236996
作者单位	School of Hydrology and Water Resources, Nanjing University of Information Science and Technology, Nanjing, China; Key Laboratory of Regional Climate-Environment for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Department of Atmospheric and Oceanic Science and Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States; Department of Geological and Atmospheric Sciences, Iowa State University, Ames, IA, United States; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Ji P.,Yuan X.,Liang X.-Z.,et al. High-Resolution Land Surface Modeling of the Effect of Long-Term Urbanization on Hydrothermal Changes Over Beijing Metropolitan Area[J],2021,126(18).
APA	Ji P.,Yuan X.,Liang X.-Z.,Jiao Y.,Zhou Y.,&Liu Z..(2021).High-Resolution Land Surface Modeling of the Effect of Long-Term Urbanization on Hydrothermal Changes Over Beijing Metropolitan Area.Journal of Geophysical Research: Atmospheres,126(18).
MLA	Ji P.,et al."High-Resolution Land Surface Modeling of the Effect of Long-Term Urbanization on Hydrothermal Changes Over Beijing Metropolitan Area".Journal of Geophysical Research: Atmospheres 126.18(2021).