Characteristics of summer heat stress in China during 1979‒2014: climatology and long-term trends
Publication in refereed journal

替代計量分析
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其它資訊
摘要Heat stress describes the joint effects of high temperature and humidity. It poses severe impacts on public health and socioeconomic activities. However, its characteristics have not been fully investigated. Here we conduct a comprehensive examination of the climatological pattern and long-term trends of summer heat stress occurrences across China during 1979–2014. We find that China experienced severe heat stress conditions, particularly in densely populated and urbanized areas such as North China, the Yangtze River valley, and South China. Heat stress events in all these subregions are accompanied by decreased relative humidity (RH), and suppressed surface pressure and precipitation. Heat stress in China is mainly caused by high temperature, rather than high RH. Moreover, heat stress in most regions of China has increased noticeably during the past decades. Nationwide apparent temperature (AT, or heat index) and temperature (T) have increased by 0.37 and 0.35 °C decade−1, respectively. The yearly frequencies of cautionary, extreme cautionary, and dangerous heat stress days have increased by 0.92, 0.67, and 0.03 days decade−1, respectively. It is noticed that AT, T, and absolute humidity increase and RH decreases in most parts of China, suggesting that saturated water vapor pressure increases faster than actual water vapor pressure with rising temperature.
出版社接受日期18.06.2019
著者Ming Luo, Ngar-Cheung Lau
期刊名稱Climate Dynamics
出版年份2019
月份11
卷號53
期次9-10
頁次5375 - 5388
國際標準期刊號0930-7575
電子國際標準期刊號1432-0894
語言英式英語

上次更新時間 2020-19-10 於 01:40