Seasonal Cooling Effect of Vegetation and Albedo Applied to the LCZ Classification of Three Chinese Megacities

Seasonal Cooling Effect of Vegetation and Albedo Applied to the LCZ Classification of Three Chinese Megacities

Luo, Yifan (Guangzhou University)
Yang, Jinxin (Guangzhou University)
Shi, Qian (Sun Yat-sen University)
Xu, Yong (Guangzhou University)
Menenti, M. (TU Delft Optical and Laser Remote Sensing; Chinese Academy of Sciences)
Wong, Man Sing (The Hong Kong Polytechnic University)

2023

The urban heat island effect poses a growing threat to human society, especially in densely populated and developed megacities. With the introduction of the Local Climate Zones (LCZ) framework, new perspectives and findings have been brought to urban heat island studies. This study investigated the cooling effect of vegetation and albedo on the surface urban heat island (SUHI) in the classification system of LCZ during different seasons, using three Chinese megacities as case study areas. Single-factor linear regression and Pearson’s correlation coefficient were applied to analyze the seasonal cooling effect of both albedo and the NDVI on the SUHI within different LCZs. The results show that (1) the variability of the SUHI is reflected in its dominance and intensity within certain LCZs in different cities and in the efficiency of cooling factors; (2) the cooling effect of vegetation is dominant in each season, and the cooling effect produced by albedo within specific seasons can be differentiated by LCZs. This study provides valuable information for the mitigation of the SUHI magnitude in specific regions and at specific times of the year.

local climate zone
albedo
vegetation
heat mitigation

http://resolver.tudelft.nl/uuid:202860af-8f0c-46e3-8bf6-0836ab7e60e9

https://doi.org/10.3390/rs15235478

2072-4292

Remote Sensing, 15 (23)

Institutional Repository

journal article

© 2023 Yifan Luo, Jinxin Yang, Qian Shi, Yong Xu, M. Menenti, Man Sing Wong