干旱区生态环境知识资源中心(Arid): Remote sensing and energy balance modeling of urban climate variability across a semi-arid megacity

Arid

DOI	10.1016/j.uclim.2020.100757
	Remote sensing and energy balance modeling of urban climate variability across a semi-arid megacity
	Wetherley, Erin B.; Roberts, Dar A.; Tague, Christina L.; Jones, Charles; Quattrochi, Dale A.; McFadden, Joseph P.
通讯作者	Wetherley, EB (corresponding author), UC Santa Barbara, Dept Geog, 1832 Ellison Hall, Santa Barbara, CA 93106 USA.
来源期刊	URBAN CLIMATE
ISSN	2212-0955
出版年	2021
卷号	35
英文摘要	Local and regional urban surface heterogeneity produces diverse urban climates, significantly impacting water use, energy consumption, and human health. This study examines urban energy flux variability across landcover and climate gradients for 2123 km2 of urbanized Los Angeles County, USA, by using high resolution remote sensing combined with spatially distributed simulations with an urban energy balance model, covering the complete diurnal cycle of the remote sensing flights. Localized parameters, including landcover, plant type, albedo, building and tree height, and irrigation, were derived from hyperspectral and LiDAR imagery, and GIS. Modeled latent heat fluxes (LE) were linearly correlated with measured land surface temperature at the neighborhood scale (R2 = 0.51), and modeled Bowen ratio values closely agreed with previous values derived from eddy covariance observations. LE across the region displayed spatial and temporal responses to irrigation and regional climate. Peak LE occurred 3 h before solar noon, driven by early morning irrigation characteristic of the region. This suggests that schedule-based water conservation policies could reduce the cooling capacity of urban vegetation in late afternoon. Additionally, a negative effect of distance from the coast on LE was observed to strengthen through the day, reducing LE in interior areas relative to coastal areas.
英文关键词	Thermal imagery Hyperspectral imagery Latent heat flux Sensible heat flux Irrigation Coastal effect
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000697439900008
WOS关键词	SPECTRAL MIXTURE ANALYSIS ; LAND-SURFACE TEMPERATURE ; LOS-ANGELES ; WATER-USE ; IMAGING SPECTROSCOPY ; AIRBORNE LIDAR ; HEAT FLUXES ; BARE SOIL ; VEGETATION ; COVER
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369065
作者单位	[Wetherley, Erin B.; Roberts, Dar A.; Jones, Charles; McFadden, Joseph P.] UC Santa Barbara, Dept Geog, 1832 Ellison Hall, Santa Barbara, CA 93106 USA; [Tague, Christina L.] UC Santa Barbara, Bren Sch Environm Sci & Management, 2400 Bren Hall, Santa Barbara, CA 93106 USA; [Quattrochi, Dale A.] NASA Marshall Space Flight Ctr, Earth Sci Branch, Huntsville, AL USA
推荐引用方式 GB/T 7714	Wetherley, Erin B.,Roberts, Dar A.,Tague, Christina L.,et al. Remote sensing and energy balance modeling of urban climate variability across a semi-arid megacity[J],2021,35.
APA	Wetherley, Erin B.,Roberts, Dar A.,Tague, Christina L.,Jones, Charles,Quattrochi, Dale A.,&McFadden, Joseph P..(2021).Remote sensing and energy balance modeling of urban climate variability across a semi-arid megacity.URBAN CLIMATE,35.
MLA	Wetherley, Erin B.,et al."Remote sensing and energy balance modeling of urban climate variability across a semi-arid megacity".URBAN CLIMATE 35(2021).