Heat and cold stresses in different climate zones across China: A comparison between the 20th and 21st centuries |
| |
Authors: | Danny HW Li Kevin KW Wan Liu Yang Joseph C Lam |
| |
Affiliation: | 1. Building Energy Research Group, Department of Building and Construction, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, China;2. School of Architecture, Xi’an University of Architecture and Technology, Shaanxi 710055, China |
| |
Abstract: | Summer and winter discomfort in terms of heat and cold stresses in the nine major architectural climate zones and sub-zones across China in the 21st century were investigated using predictions from general circulation models for the low and medium emissions scenarios. For the six severe cold and cold climate zones in the north, reductions in cumulative cold stress outweighed the increase in cumulative heat stress resulting in an overall decreasing trend in the annual cumulative stress, and vice versa for the other three warmer climate zones in the south. Compared with the 20th century, significant reduction in the cumulative cold stress was observed across the six zones in severe cold and cold climates, ranging from 15.8 in cold-III to 42.3 in severe cold-II. There were modest increases in the cumulative heat stress from 0.3 in cold-II to 12.3 in cold-III. For the warmer climates in the south, reduction in cumulative cold stress ranged from 7.6 in hot summer and warm winter (HSWW) to 10.3 in hot summer and cold winter, while cumulative heat stress increased from 9.9 in the mild zone to 30.6 in HSWW. A reduction in cold stress would result in less winter heating and an increase in heat stress more cooling requirement. |
| |
Keywords: | Heat and cold stresses Built environment Climate change General circulation models 20th and 21st centuries China |
本文献已被 ScienceDirect 等数据库收录! |
|