Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Temporal and Spatial Evolution of Climate Comfort and Population Exposure in Guangdong Province in the Last Half Century

Version 1 : Received: 7 January 2022 / Approved: 11 January 2022 / Online: 11 January 2022 (13:04:16 CET)

A peer-reviewed article of this Preprint also exists.

Ye, Z.; Song, S.; Zhong, R. Temporal and Spatial Evolution of Climate Comfort and Population Exposure in Guangdong Province in the Last Half Century. Atmosphere 2022, 13, 502. Ye, Z.; Song, S.; Zhong, R. Temporal and Spatial Evolution of Climate Comfort and Population Exposure in Guangdong Province in the Last Half Century. Atmosphere 2022, 13, 502.

Journal reference: Atmosphere 2022, 13, 502
DOI: 10.3390/atmos13030502

Abstract

Regional Climatic Comfort Index (CCI) deteriorated significantly due to the climate change and anthropogenic interference. Knowledge regarding the long-term temporal dynamics of CCI in typical regions should be strengthened. In this study, we analyze the temporal and spatial evolution of CCI from 1969 to 2018 in Guangdong Province, based on meteorological indicators, including heat, humidity, wind and cloth loading etc.. Additionally, the population exposure to climate unconformity was examined since 1990 with the help of population data. Our study found that: (1) the warming and humidifying of the summer climate served as the main driving force for the continuous deterioration of CCI, with the comfortable days decreased by 1.06d/10a and the extremely muggy days increased by 2.83d/10a; (2) spatially, the lowest climate comfortability concentrated in southwestern Guangdong with more than 50 uncomfortable days each year, while the climate comfortability in northeastern Guangdong tends to deteriorated whit higher rate, which can reach as high as 6d/10a; (3) in summer, the population exposure to uncomfortable climate highly centralized in the Pearl River Delta, Shantou, Jieyang, and the surrounding areas, and both area and population exposure showed increasing trends. Particularly, Shenzhen held the highest growth rate of population exposure with an increase rate of 2.94 million/10a; (4) although the discomfort distribution and deterioration rate vary across the province, the spatial heterogeneity of comfortability is diminishing in Guangdong Province. This study will provide scientific reference for regional urban planning, thermal environment improvement, local resident health risk analysis, and key strategy implementation, etc.

Keywords

climate comfort index; temperature-humidity index; wind-effect index; clothing index; population exposure

Subject

EARTH SCIENCES, Atmospheric Science

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