DOI: 10.1002/2015GL066534
论文题名: Urban climate modifications in hot desert cities: The role of land cover, local climate, and seasonality
作者: Lazzarini M. ; Molini A. ; Marpu P.R. ; Ouarda T.B.M.J. ; Ghedira H.
刊名: Geophysical Research Letters
ISSN: 0094-8422
EISSN: 1944-8153
出版年: 2015
卷: 42, 期: 22 起始页码: 9980
结束页码: 9989
语种: 英语
英文关键词: arid lands
; desert cities
; land surface temperature
; oasis effect
; urban climate
; urban cool island
Scopus关键词: Boundary layers
; Image reconstruction
; Landforms
; Radiometers
; Surface measurement
; Surface properties
; Vegetation
; Arid lands
; Desert cities
; Land surface temperature
; Oasis effect
; Urban climates
; Urban cool island
; Atmospheric temperature
; arid environment
; boundary layer
; climate forcing
; diurnal variation
; heat island
; land cover
; land surface
; Landsat
; MODIS
; NDVI
; oasis
; relative abundance
; seasonality
; suburban area
; surface area
; surface temperature
; temperate environment
; urbanization
; weather modification
英文摘要: Urban climate modifications like the urban heat island (UHI) have been extensively investigated in temperate regions. In contrast, the understanding of how urbanization relates to climate in hot, hyperarid environments is still extremely limited, despite the growing socioeconomic relevance of arid lands and their fast urbanization rate. We explore here the relationship between land cover and temperature regime in hot desert cities (HDCs) based on estimates of land surface temperature, normalized difference vegetation index, and impervious surface areas inferred from Moderate Resolution Imaging Spectroradiometer and Landsat satellite products. Our analysis shows that HDCs display common climatic patterns, with downtown areas on average cooler than suburbs during the daytime (urban cool island) and warmer at night (classical UHI). The observed diurnal cool island effect can be largely explained by relative vegetation abundance, percentage of bare soil, and local climatic conditions and calls for a more in deep investigation of the physical processes regulating boundary layer dynamics in arid regions. Key Points We compared urban climate modification patterns across hot desert cities from all over the world Diurnal cool island was found to alternate with the classic night heat island effect in most HDCs Vegetation abundance, ISA percentage, and local climatic forcing can explain the HDC cool island. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956964442&doi=10.1002%2f2015GL066534&partnerID=40&md5=cd2c6118bc1403292065d2dc0321241d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8038
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Institute Center for Water and Environment (IWater), Masdar Institute of Science and Technology, Abu Dhabi, United Arab Emirates
Recommended Citation:
Lazzarini M.,Molini A.,Marpu P.R.,et al. Urban climate modifications in hot desert cities: The role of land cover, local climate, and seasonality[J]. Geophysical Research Letters,2015-01-01,42(22).