Contrasting Trends and Drivers of Global Surface and Canopy Urban Heat Islands

被引:28
作者
Du H. [1 ]
Zhan W. [1 ,2 ]
Voogt J. [3 ]
Bechtel B. [4 ]
Chakraborty T.C. [5 ]
Liu Z. [1 ]
Hu L. [6 ]
Wang Z. [7 ]
Li J. [1 ]
Fu P. [8 ]
Liao W. [9 ]
Luo M. [9 ]
Li L. [1 ]
Wang S. [1 ]
Huang F. [1 ]
Miao S. [1 ]
机构
[1] Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, International Institute for Earth System Science, Nanjing University, Nanjing
[2] Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing
[3] Department of Geography, Western University, London, ON
[4] Department of Geography, Ruhr-University Bochum, Bochum
[5] Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA
[6] Department of Atmospheric Science, University of Alabama in Huntsville, Huntsville, AL
[7] School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ
[8] Center for Environment, Energy, and Economy, Harrisburg, PA
[9] Guangdong Key Laboratory for Urbanization and Geo-simulation, School of Geography and Planning, Sun Yat-sen University, Guangzhou
基金
中国国家自然科学基金;
关键词
background climate; canopy urban heat island; surface property; surface urban heat island; urban climate change;
D O I
10.1029/2023GL104661
中图分类号
学科分类号
摘要
A comprehensive comparison of the trends and drivers of global surface and canopy urban heat islands (termed Is and Ic trends, respectively) is critical for better designing urban heat mitigation strategies. However, such a global comparison remains largely absent. Using spatially continuous land surface temperatures and surface air temperatures (2003–2020), here we find that the magnitude of the global mean Is trend (0.19 ± 0.006°C/decade, mean ± SE) for 5,643 cities worldwide is nearly six-times the corresponding Ic trend (0.03 ± 0.002°C/decade) during the day, while the former (0.06 ± 0.004°C/decade) is double the latter (0.03 ± 0.002°C/decade) at night. Variable importance scores indicate that global daytime Is trend is slightly more controlled by surface property, while background climate plays a more dominant role in regulating global daytime Ic trend. At night, both global Is and Ic trends are mainly controlled by background climate. © 2023. The Authors.
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共 53 条
[1]  
Chakraborty T.C., Lee X.H., A simplified urban-extent algorithm to characterize surface urban heat islands on a global scale and examine vegetation control on their spatiotemporal variability, International Journal of Applied Earth Observation and Geoinformation, 74, pp. 269-280, (2019)
[2]  
Chakraborty T.C., Lee X.H., Ermida S., Zhan W.F., On the land emissivity assumption and Landsat-derived surface urban heat islands: A global analysis, Remote Sensing of Environment, 265, (2021)
[3]  
Chakraborty T.C., Sarangi C., Lee X.H., Reduction in human activity can enhance the urban heat island: Insights from the COVID-19 lockdown, Environmental Research Letters, 16, 5, (2021)
[4]  
Chakraborty T.C., Venter Z.S., Qian Y., Lee X.H., Lower urban humidity moderates outdoor heat stress, AGU Advances, 3, 5, (2022)
[5]  
Chen C., Li D., Keenan T.F., Enhanced surface urban heat islands due to divergent urban-rural greening trends, Environmental Research Letters, 16, 12, (2021)
[6]  
Chen C., Park T., Wang X.H., Piao S.L., Xu B.D., Chaturvedi R.K., Et al., China and India lead in greening of the world through land-use management, Nature Sustainability, 2, pp. 122-129, (2019)
[7]  
Doxsey-Whitfield E., MacManus K., Adamo S.B., Pistolesi L., Squires J., Borkovska O., Baptista S.R., Taking advantage of the improved availability of census data: A first look at the gridded population of the world, version 4, Applied Geography, 1, 3, pp. 226-234, (2015)
[8]  
Du H.L., Zhan W.F., Liu Z.H., Krayenhoff E.S., Chakraborty T.C., Zhao L., Et al., Global mapping of urban thermal anisotropy reveals substantial potential biases for remotely sensed urban climates, Science Bulletin, (2023)
[9]  
Du H.L., Zhan W.F., Liu Z.H., Li J.F., Li L., Lai J.M., Et al., Simultaneous investigation of surface and canopy urban heat islands over global cities, ISPRS Journal of Photogrammetry and Remote Sensing, 181, pp. 67-83, (2021)
[10]  
Gong P., Li X.C., Wang J., Bai Y.Q., Chen B., Hu T.Y., Et al., Annual maps of global artificial impervious area (GAIA) between 1985 and 2018, Remote Sensing of Environment, 236, (2020)