气候变化领域集成服务门户(CCPortal): Underestimated Change of Wet-Bulb Temperatures Over East and South China

CCPortal

DOI	10.1029/2019GL086140
	Underestimated Change of Wet-Bulb Temperatures Over East and South China
	Freychet N.; Tett S.F.B.; Yan Z.; Li Z.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:3
英文摘要	Wet-bulb temperature (TW), which combines dry-bulb temperature and relative humidity (RH), is a key variable for human health and heat stress because in hot environments evaporation is the main process by which bodies cool down. For this study, we use two independent RH data sets: a new homogenized network of daily ground observations in China and the recent ERA5 reanalysis, for which we highlight the need to apply humidity correction. Based on these data sets, we show that Chinese wet-bulb temperatures since 1980 have increased largely due to a rise in dry-bulb temperatures while RH has remained approximately constant. We also find that TW change has been previously underestimated due to humidity bias in reanalysis and nonhomogenized observation where RH was decreasing sharply after 2000s, greatly limiting changes in TW. ©2020. The Authors.
英文关键词	Geophysics; Dry bulb temperature; Ground observations; Hot environments; Human health; Humidity correction; Key variables; Main process; Wet bulb temperature; Earth sciences; evaporation; ground-based measurement; public health; relative humidity; temperature effect; China
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170806
作者单位	School of Geosciences, University of Edinburgh, Edinburgh, United Kingdom; Institute of Atmospheric Physics, University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Freychet N.,Tett S.F.B.,Yan Z.,et al. Underestimated Change of Wet-Bulb Temperatures Over East and South China[J],2020,47(3).
APA	Freychet N.,Tett S.F.B.,Yan Z.,&Li Z..(2020).Underestimated Change of Wet-Bulb Temperatures Over East and South China.Geophysical Research Letters,47(3).
MLA	Freychet N.,et al."Underestimated Change of Wet-Bulb Temperatures Over East and South China".Geophysical Research Letters 47.3(2020).