Publications

Miao, SQ; Zhan, WF; Lai, JM; Li, L; Du, HL; Wang, CG; Wang, CL; Li, JF; Huang, F; Liu, ZH; Dong, P (2022). Heat wave-induced augmentation of surface urban heat islands strongly regulated by rural background. SUSTAINABLE CITIES AND SOCIETY, 82, 103874.

Abstract
The impact of heat waves (HWs) on surface urban heat islands (SUHIs) has been widely studied, but the spatial pattern of SUHI responsiveness to HWs across various climates remains unclear, and the influence of HW intensity on SUHI responsiveness has not been systematically quantified. Using MODIS land surface temperature data, here we investigated the responsiveness of SUHI to HWs (quantified as Delta I) as well as its variations with HW intensity in 354 cities in seven climate zones across China. We find that during HW periods, the SUHI and surface urban cool island are augmented in the humid and arid regions of China, respectively. The inter-city heterogeneity in rural vegetation coverage accounts for such a spatial pattern. In eastern China, the Delta I peaks in the north subtropical climate (0.72 +/- 0.54 K for daytime and 0.29 +/- 0.23 K for the nighttime) probably for its specific rural farming method. With the intensification of HWs, the augmentation effect can be further enhanced for the north subtropical, warm temperate, and arid temperate climates during the day and for almost all the climates at night. These findings can help advance the understanding of the responsiveness of SUHI to extreme climatic events.

DOI:
10.1016/j.scs.2022.103874

ISSN:
2210-6715