气候变化领域集成服务门户(CCPortal): Assessing the representation of Australian regional climate extremes and their associated atmospheric circulation in climate models

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DOI	10.1175/JCLI-D-19-0287.1
	Assessing the representation of Australian regional climate extremes and their associated atmospheric circulation in climate models
	Tozer C.R.; Risbey J.S.; Monselesan D.P.; Squire D.T.; Chamberlain M.A.; Matear R.J.; Ziehn T.
发表日期	2020
ISSN	0894-8755
起始页码	1227
结束页码	1245
卷号	33 期号:4
英文摘要	We assess the representation of multiday temperature and rainfall extremes in southeast Australia in three coupled general circulation models (GCMs) of varying resolution. We evaluate the statistics of the modeled extremes in terms of their frequency, duration, and magnitude compared to observations, and the model representation of the midtropospheric circulation (synoptic and large scale) associated with the extremes. We find that the models capture the statistics of observed heatwaves reasonably well, though some models are ‘‘too wet’’ to adequately capture the observed duration of dry spells but not always wet enough to capture the magnitude of extreme wet events. Despite the inability of the models to simulate all extreme event statistics, the process evaluation indicates that the onset and decay of the observed synoptic structures are well simulated in the models, including for wet and dry extremes. We also show that the large-scale wave train structures associated with the observed extremes are reasonably well simulated by the models although their broader onset and decay is not always captured in the models. The results presented here provide some context for, and confidence in, the use of the coupled GCMs in climate prediction and projection studies for regional extremes. © 2020 American Meteorological Society.
英文关键词	Climatology; Petroleum reservoir evaluation; Atmospheric circulation; Climate prediction; Coupled general circulation models; Model representation; Process Evaluation; Rainfall extremes; Regional climate; Southeast australia; Climate models; atmospheric circulation; climate modeling; climate prediction; extreme event; general circulation model; heat wave; regional climate; Australia
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171448
作者单位	CSIRO Oceans and Atmosphere, Hobart, TAS, Australia; CSIRO Oceans and Atmosphere, Aspendale, VIC, Australia
推荐引用方式 GB/T 7714	Tozer C.R.,Risbey J.S.,Monselesan D.P.,et al. Assessing the representation of Australian regional climate extremes and their associated atmospheric circulation in climate models[J],2020,33(4).
APA	Tozer C.R..,Risbey J.S..,Monselesan D.P..,Squire D.T..,Chamberlain M.A..,...&Ziehn T..(2020).Assessing the representation of Australian regional climate extremes and their associated atmospheric circulation in climate models.Journal of Climate,33(4).
MLA	Tozer C.R.,et al."Assessing the representation of Australian regional climate extremes and their associated atmospheric circulation in climate models".Journal of Climate 33.4(2020).