干旱区生态环境知识资源中心(Arid): Local Climate Zones and Thermal Characteristics in Riyadh City, Saudi Arabia

Arid

DOI	10.3390/rs13224526
	Local Climate Zones and Thermal Characteristics in Riyadh City, Saudi Arabia
	Alghamdi, Ali S.; Alzhrani, Ahmed Ibrahim; Alanazi, Humud Hadi
通讯作者	Alzhrani, AI (corresponding author), King Saud Univ, Dept Geog, Riyadh 12372, Saudi Arabia.
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2021
卷号	13 期号:22
英文摘要	Using the local climate zone (LCZ) framework and multiple Earth observation input features, an LCZ classification was developed and established for Riyadh City in 2017. Four land-cover-type and four urban-type LCZs were identified in the city with an overall accuracy of 87%. The bare soil/sand (LCZ-F) class was found to be the largest LCZ class, which was within the nature of arid climate cities. Other land-cover LCZs had a lower coverage percentage (each class with < 7%). The compact low-rise (LCZ-3) class was the largest urban type, as urban development in arid climate cities tends to extend horizontally. The daytime surface thermal characteristics of the developed LCZs were analyzed at seasonal timescales using land surface temperature (LST) estimated from multiple Landsat 8 satellite images (June 2017-May 2018). The highest daytime mean LST was found over large low-rise (LCZ-8) class areas throughout the year. This class was the only urban-type LCZ class that demonstrated a positive LST departure from the overall mean LST across seasons. Other urban-type LCZ classes showed lower LSTs and negative deviations from the overall mean LSTs. The overall thermal results suggested the presence of the surface urban heat island sink phenomenon as urban areas experienced lower LSTs than their surroundings. Thermal results demonstrated that the magnitudes of LST differences among LCZs were considerably dependent on the way the region of interest/analysis was defined. This was related to the types of LCZ classes presented in the study area and the spatial distribution and abundance of these LCZ classes. The developed LCZ classification and thermal results have several potential applications in different areas including planning and urban design strategies and urban health-related studies.
英文关键词	land surface temperature urban heat island surface urban heat island local climate zones local climate zone generator
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000725270600001
WOS关键词	URBAN HEAT-ISLAND ; SURFACE-TEMPERATURE ; COVER ; STRESS ; CITIES ; AREAS
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/373754
作者单位	[Alghamdi, Ali S.; Alzhrani, Ahmed Ibrahim; Alanazi, Humud Hadi] King Saud Univ, Dept Geog, Riyadh 12372, Saudi Arabia; [Alanazi, Humud Hadi] Univ Hail, Dept Tourism & Archeol, Hail 55473, Saudi Arabia
推荐引用方式 GB/T 7714	Alghamdi, Ali S.,Alzhrani, Ahmed Ibrahim,Alanazi, Humud Hadi. Local Climate Zones and Thermal Characteristics in Riyadh City, Saudi Arabia[J],2021,13(22).
APA	Alghamdi, Ali S.,Alzhrani, Ahmed Ibrahim,&Alanazi, Humud Hadi.(2021).Local Climate Zones and Thermal Characteristics in Riyadh City, Saudi Arabia.REMOTE SENSING,13(22).
MLA	Alghamdi, Ali S.,et al."Local Climate Zones and Thermal Characteristics in Riyadh City, Saudi Arabia".REMOTE SENSING 13.22(2021).