干旱区生态环境知识资源中心(Arid): Understanding the summertime warming in canyon and non-canyon surfaces

Arid

DOI	10.1016/j.uclim.2021.100916
	Understanding the summertime warming in canyon and non-canyon surfaces
	Saher, Rubab; Stephen, Haroon; Ahmad, Sajjad
通讯作者	Ahmad, S (corresponding author), Univ Nevada, Dept Civil & Environm Engn & Construct, Las Vegas, NV USA.
来源期刊	URBAN CLIMATE
ISSN	2212-0955
出版年	2021
卷号	38
英文摘要	Urban landscapes, made of unique buildings, pavements, and vegetation, create complex influences on the atmosphere. These influences induce increased nighttime warming and daytime cooling, especially in arid regions. This study compared three types of surfaces, including rooftop, turfgrass, and canyons, in terms of surface temperature and surface energy fluxes. A 68 sq.km parcel in Phoenix, AZ was considered for comparison. The study found that the canyons' land surface temperatures (LST) were 5 degrees C lower than the rooftop surfaces. The turfgrass surfaces were 4 degrees C cooler than the canyon surfaces. Moreover, north and south (N-S) oriented canyons were 2 degrees C cooler than east and west (E-W) oriented canyons. No significant changes were observed in net radiation for rooftop, turfgrass, or canyon surfaces. However, conductive fluxes, warranting nighttime warming, showed higher absorption of 45 W/m2 on the rooftop surfaces, than in the canyons. The turfgrass showed nighttime cooling, as the heat absorption was 210 W/m2 lower than the rooftop surfaces and 165 W/m2 lower than the canyons. Additionally, a 50 W/m2 difference of heat absorption was observed between N-S oriented canyons and E-W oriented canyons. The study concludes that canyons are major causes of daytime cooling and nighttime warming.
英文关键词	Land surface temperature (LST) Net radiation Soil heat flux Nighttime warming Daytime cooling Phoenix
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000679342900004
WOS关键词	SKY VIEW FACTOR ; LANDSAT 8 OLI ; ENERGY-BALANCE ; THERMAL COMFORT ; URBAN ENERGY ; AIR-TEMPERATURE ; PHOENIX ; MICROCLIMATE ; WATER ; ORIENTATION
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
来源机构	Desert Research Institute
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364811
作者单位	[Saher, Rubab] Desert Res Inst, Div Hydrol Sci, Las Vegas, NV USA; [Stephen, Haroon; Ahmad, Sajjad] Univ Nevada, Dept Civil & Environm Engn & Construct, Las Vegas, NV USA
推荐引用方式 GB/T 7714	Saher, Rubab,Stephen, Haroon,Ahmad, Sajjad. Understanding the summertime warming in canyon and non-canyon surfaces[J]. Desert Research Institute,2021,38.
APA	Saher, Rubab,Stephen, Haroon,&Ahmad, Sajjad.(2021).Understanding the summertime warming in canyon and non-canyon surfaces.URBAN CLIMATE,38.
MLA	Saher, Rubab,et al."Understanding the summertime warming in canyon and non-canyon surfaces".URBAN CLIMATE 38(2021).