Arid
DOI10.1016/j.rse.2009.10.008
Remote sensing of the urban heat island effect across biomes in the continental USA
Imhoff, Marc L.1; Zhang, Ping2; Wolfe, Robert E.; Bounoua, Lahouari
通讯作者Imhoff, Marc L.
来源期刊REMOTE SENSING OF ENVIRONMENT
ISSN0034-4257
EISSN1879-0704
出版年2010
卷号114期号:3页码:504-513
英文摘要

Impervious surface area (ISA) from the Landsat TM-based NLCD 2001 dataset and land surface temperature (LST) from MODIS averaged over three annual cycles (2003-2005) are used in a spatial analysis to assess the urban heat island (UHI) skin temperature amplitude and its relationship to development intensity, size, and ecological setting for 38 of the most populous cities in the continental United States. Development intensity zones based on %ISA are defined for each urban area emanating outward from the urban core to the non-urban rural areas nearby and used to stratify sampling for land surface temperatures and NDVI. Sampling is further constrained by biome and elevation to insure objective intercomparisons between zones and between cities in different biomes permitting the definition of hierarchically ordered zones that are consistent across urban areas in different ecological setting and across scales.


We find that ecological context significantly influences the amplitude of summer daytime UHI (urban-rural temperature difference) the largest (8 degrees C average) observed for cities built in biomes dominated by temperate broadleaf and mixed forest. For all cities combined, ISA is the primary driver for increase in temperature explaining 70% of the total variance in LST. On a yearly average, urban areas are substantially warmer than the non-urban fringe by 2.9 degrees C, except for urban areas in biomes with and and semiarid climates. The average amplitude of the UHI is remarkably asymmetric with a 4.3 degrees C temperature difference in summer and only 1.3 degrees C in winter. In desert environments, the LSTs response to ISA presents an uncharacteristic "U-shaped" horizontal gradient decreasing from the urban core to the outskirts of the city and then increasing again in the suburban to the rural zones. UHI’s calculated for these cities point to a possible heat sink effect. These observational results show that the urban heat island amplitude both increases with city size and is seasonally asymmetric for a large number of cities across most biomes. The implications are that for urban areas developed within forested ecosystems the summertime UHI can be quite high relative to the wintertime UHI suggesting that the residential energy consumption required for summer cooling is likely to increase with urban growth within those biomes. Published by Elsevier Inc.


英文关键词Urban heat island Remote sensing MODIS Land surface temperature Biomes Landsat Impervious surface area
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000274820700005
WOS关键词LAND-SURFACE TEMPERATURE ; UNITED-STATES ; IMPERVIOUS SURFACE ; PRIMARY PRODUCTIVITY ; TROPICAL CITY ; SATELLITE ; MODIS ; VEGETATION ; IMPACT ; URBANIZATION
WOS类目Environmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向Environmental Sciences & Ecology ; 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/2XILL650/166239
作者单位1.NASA, Goddard Space Flight Ctr, Biospher Sci Branch, Hydrospher & Biospher Sci Lab, Greenbelt, MD 20771 USA;
2.Earth Resource Technol Inc, Annapolis Jct, MD 20701 USA
推荐引用方式
GB/T 7714
Imhoff, Marc L.,Zhang, Ping,Wolfe, Robert E.,et al. Remote sensing of the urban heat island effect across biomes in the continental USA[J],2010,114(3):504-513.
APA Imhoff, Marc L.,Zhang, Ping,Wolfe, Robert E.,&Bounoua, Lahouari.(2010).Remote sensing of the urban heat island effect across biomes in the continental USA.REMOTE SENSING OF ENVIRONMENT,114(3),504-513.
MLA Imhoff, Marc L.,et al."Remote sensing of the urban heat island effect across biomes in the continental USA".REMOTE SENSING OF ENVIRONMENT 114.3(2010):504-513.
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