The footprint of urban heat island effect in China

被引：337

作者：

Zhou, Decheng ^{[1
,2
,3
,4
]}

Zhao, Shuqing ^{[3
,4
]}

Zhang, Liangxia ^{[1
,2
]}

Sun, Ge ^{[5
]}

Liu, Yongqiang ^{[6
]}

机构：

[1] Nanjing Univ Informat Sci & Technol, Jiangsu Key Lab Agr Meteorol, Nanjing 210044, Jiangsu, Peoples R China

[2] Nanjing Univ Informat Sci & Technol, Coll Appl Meteorol, Nanjing 210044, Jiangsu, Peoples R China

[3] Peking Univ, Minist Educ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China

[4] Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China

[5] US Forest Serv, Eastern Forest Environm Threat Assessment Ctr, Southern Res Stn, Raleigh, NC 27606 USA

[6] US Forest Serv, Ctr Forest Disturbance Sci, Southern Res Stn, Athens, GA 30602 USA

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

基金：

中国国家自然科学基金;

关键词：

LAND-SURFACE TEMPERATURE; CLIMATE; MODIS; CITIES; VALIDATION; EXPANSION; PHENOLOGY; PATTERNS; GRADIENT; IMPACT;

D O I：

10.1038/srep11160

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Urban heat island (UHI) is one major anthropogenic modification to the Earth system that transcends its physical boundary. Using MODIS data from 2003 to 2012, we showed that the UHI effect decayed exponentially toward rural areas for majority of the 32 Chinese cities. We found an obvious urban/rural temperature "cliff", and estimated that the footprint of UHI effect (FP, including urban area) was 2.3 and 3.9 times of urban size for the day and night, respectively, with large spatiotemporal heterogeneities. We further revealed that ignoring the FP may underestimate the UHI intensity in most cases and even alter the direction of UHI estimates for few cities. Our results provide new insights to the characteristics of UHI effect and emphasize the necessity of considering city- and time-specific FP when assessing the urbanization effects on local climate.

引用

页数：11

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