气候变化领域集成服务门户(CCPortal): Greenspace, bluespace, and their interactive influence on urban thermal environments

CCPortal

DOI	10.1088/1748-9326/ab6c30
	Greenspace, bluespace, and their interactive influence on urban thermal environments
	Hu L.; Li Q.
发表日期	2020
ISSN	17489318
卷号	15 期号:3
英文摘要	Urban land use land cover (LULC) change raises ambient temperature and modifies atmospheric moisture, which increases heat-related health risks in cities. Greenspace and bluespace commonly coexist in urban landscapes and are nature-based heat mitigation strategies. Yet, their interactive effects on urban thermal environments are rarely assessed and it remains unclear how extreme heat events (EHEs) affect their ability to regulate human thermal comfort. Using multi-year observations from a dense urban observational network in Madison, WI, we found that green and blue spaces jointly modify the intraurban spatiotemporal variability of temperature and humidity, and the resultant effects on thermal comfort show diurnal and seasonal asymmetry. Greenspace is more effective at cooling throughout the year, particularly at night. Accelerated cooling efficiency is found in areas with dominant greenspace coverage and little co-influence from bluespace. The thermal comfort benefit due to greenspaces can be offset by bluespaces because of intensified nighttime warming and humidifying effects during the warm months, although a weak daytime cooling of bluespace is observed. EHEs enhance bluespace cooling, but the overall joint thermal regulation remains the same due to the enhanced moisture effect. Our findings suggest that diverse outcomes of green and blue spaces cross multiple temporal scales should be holistically assessed in urban planning. The analysis framework based on generalized additive models is robust and transferable to other cities and applications to disentangle the nonlinear co-influences of different drivers of urban environmental phenomena. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	blue space; green space; interactive effect; urban thermal environment
语种	英语
scopus关键词	Atmospheric humidity; Cooling; Health risks; Land use; Moisture; Thermal comfort; blue space; Environmental phenomena; Generalized additive model; Green spaces; Interactive effect; Spatiotemporal variability; Temperature and humidities; Urban thermal environment; Atmospheric temperature; cooling; extreme event; greenspace; land cover; land use; spatiotemporal analysis; temperature effect; urban ecosystem; urban planning; Madison; United States; Wisconsin
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154203
作者单位	Department of Atmospheric and Earth Science, University of Alabama in Huntsville, Huntsville, AL 35805, United States; School of Civil and Environmental Engineering, Cornell University, Ithaca, NY 14853, United States
推荐引用方式 GB/T 7714	Hu L.,Li Q.. Greenspace, bluespace, and their interactive influence on urban thermal environments[J],2020,15(3).
APA	Hu L.,&Li Q..(2020).Greenspace, bluespace, and their interactive influence on urban thermal environments.Environmental Research Letters,15(3).
MLA	Hu L.,et al."Greenspace, bluespace, and their interactive influence on urban thermal environments".Environmental Research Letters 15.3(2020).