气候变化领域集成服务门户(CCPortal): A historical perspective on Australian temperature extremes

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DOI	10.1007/s00382-020-05298-z
	A historical perspective on Australian temperature extremes
	Gergis J.; Ashcroft L.; Whetton P.
发表日期	2020
ISSN	0930-7575
起始页码	843
结束页码	868
卷号	55
英文摘要	Global temperature increases are most clearly detected in the shifting distribution of extreme events. Australia’s warming climate has resulted in significant changes in the frequency of temperature extremes, with a general increase in heatwaves and a reduction in the number of cold days. Here, we present the longest historical analysis of daily Australian temperature extremes and their societal impacts compiled to date. We use a newly consolidated early instrumental dataset and a range of historical sources for the South Australia region of Adelaide—the nation’s driest state, containing the most heatwave-affected city in Australia—to investigate any changes in the characteristics of daily temperature extremes back to 1838. We identify multidecadal variability in heatwave and snow event frequency with a peak in the early twentieth century, with an overall decrease in cold extremes and an increase in heatwaves in the region over the 1838–2019 period. Documentary and instrumental records show a decrease in the number of snow events in Adelaide, and a clear increase in the number of heatwaves since the late twentieth century. To gain dynamical insight into historical extremes in South Australia, detailed case studies are presented to compare the synoptic characteristics of historical hot and cold extremes and their impacts. We place a particular emphasis on lesser-known events of the pre-1910 period and rare low-elevation snowfall. Significantly, this is the first study to provide long-term evidence for a reduction of low-elevation snow events and cold outbreaks in Australia. Finally, a discussion is provided on the value and limitations of using historical instrumental and documentary data to assess long-term changes in Australian temperature extremes and their potential to improve future climate change risk assessment. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Adelaide; Australia; Cold extremes; Extremes; Heatwaves; Historical climatology; Snow; Temperature
语种	英语
scopus关键词	air temperature; climate change; extreme event; heat wave; historical perspective; snow; Adelaide; Australia; South Australia
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145383
作者单位	Fenner School of Environment and Society, The Australian National University, Canberra, ACT 2601, Australia; ARC Centre of Excellence for Climate Extremes, The Australian National University, Canberra, ACT 2601, Australia; School of Earth Sciences, University of Melbourne, Parkville, VIC 3010, Australia; ARC Centre of Excellence for Climate Extremes, University of Melbourne, Parkville, VIC 3010, Australia
推荐引用方式 GB/T 7714	Gergis J.,Ashcroft L.,Whetton P.. A historical perspective on Australian temperature extremes[J],2020,55.
APA	Gergis J.,Ashcroft L.,&Whetton P..(2020).A historical perspective on Australian temperature extremes.Climate Dynamics,55.
MLA	Gergis J.,et al."A historical perspective on Australian temperature extremes".Climate Dynamics 55(2020).