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	Spatiotemporal changes of global extreme temperature events (ETEs) since 1981 and the meteorological causes
	Wang P.; Zhang Z.
	2014
关键词	Heat wave Cold spell Global pattern Climate change Extreme temperature 2003 heat-wave climate-change regional climate mortality-rates united-states hot summer europe trends china health
英文摘要	Of the various types of disasters caused by extreme climate and weather, extreme temperature events (ETEs) have led to a heightened awareness due to their increasing frequency, intensity, widespread distribution, and severe health impacts. Although many previous studies have surveyed the severe impacts of specific ETEs, few systematic studies have analyzed the temporal trends and the spatial patterns of this type of ETEs at the global scale. In the present study, disaster data from 1981 to 2010 compiled by Emergency Events Database were used to obtain a global view of the distribution of and the changes in the recorded ETEs. In addition, the daily maximum/minimum temperature data provided by National Centers for Environmental Prediction /Department of Energy Reanalysis 2 were used to explore the potential meteorological causes of these events. The results showed 2.7 and 6.4 increases in the frequencies of heat waves and cold spells per decade, respectively, since the 1980s. However, a large regional variability was found worldwide. Moreover, more than 40 % of the recorded ETEs occurred in Europe, and Asia experienced 33 and 26 % of the heat wave and cold spell events, respectively. Additionally, the global pattern for the occurrence frequency of ETEs in recent decades could be largely ascribed to the meteorological indexes: the heat stress index (HSI) and the cold stress index (CSI). The frequency of heat wave events increased from 1981 to 2010, and this trend is consistent with the increase in the HSI. However, the cold spell events did not appear to be reduced, as demonstrated by the disaster records, and this finding is inconsistent with the CSI trend. This result indicates that other factors also influence the occurrence of disaster events.
出处	Natural Hazards
卷	70
期	2
页	975-994
收录类别	SCI
语种	英语
ISSN号	0921-030X
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/29604]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Wang P.,Zhang Z.. Spatiotemporal changes of global extreme temperature events (ETEs) since 1981 and the meteorological causes. 2014.

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