气候变化领域集成服务门户(CCPortal): East Australian Cyclones and Air-Sea Feedbacks

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DOI	10.1029/2020JD034391
	East Australian Cyclones and Air-Sea Feedbacks
	Sérazin G.; Di Luca A.; Sen Gupta A.; Rogé M.; Jourdain N.C.; Argüeso D.; Bull C.Y.S.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:20
英文摘要	The importance of resolving mesoscale air-sea interactions to represent cyclones impacting the East Coast of Australia, the so-called East Coast Lows (ECLs), is investigated using the Australian Regional Coupled Model based on NEMO-OASIS-WRF (NOW) at (Formula presented.) resolution. The fully coupled model is shown to be capable of reproducing correctly relevant features such as the seasonality, spatial distribution and intensity of ECLs while it partially resolves mesoscale processes, such as air-sea feedbacks over ocean eddies and fronts. The mesoscale thermal feedback (TFB) and the current feedback (CFB) are shown to influence the intensity of northern ECLs (north of (Formula presented.)), with the TFB modulating the pre-storm sea surface temperature (SST) by shifting ECL locations eastwards and the CFB modulating the wind stress. By fully uncoupling the atmospheric model of NOW, the intensity of northern ECLs is increased due to the absence of the cold wake that provides a negative feedback to the cyclone. The number of ECLs might also be affected by the air-sea feedbacks but large interannual variability hampers significant results with short-term simulations. The TFB and CFB modify the climatology of SST (mean and variability) but no direct link is found between these changes and those noticed in ECL properties. These results show that the representation of ECLs, mainly north of (Formula presented.), depend on how air-sea feedbacks are simulated. This is particularly important for atmospheric downscaling of climate projections as small-scale SST interactions and the effects of ocean currents are not accounted for. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	air-sea feedbacks; atmospheric lows; Australian East Coast; dynamical downscaling; ocean mesoscales; tropical storms
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236955
作者单位	Climate Change Research Centre, University of New South Wales, Sydney, NSW, Australia; ARC Centre of Excellence for Climate Extremes, University of New South Wales, Sydney, NSW, Australia; Univ. Grenoble Alpes/CNRS/IRD/G-INP, IGE, Grenoble, France; Physics Department, University of the Balearic Islands, Palma, Spain; Department of Geography and Environmental Sciences, Northumbria University, Newcastle Upon Tyne, United Kingdom
推荐引用方式 GB/T 7714	Sérazin G.,Di Luca A.,Sen Gupta A.,et al. East Australian Cyclones and Air-Sea Feedbacks[J],2021,126(20).
APA	Sérazin G..,Di Luca A..,Sen Gupta A..,Rogé M..,Jourdain N.C..,...&Bull C.Y.S..(2021).East Australian Cyclones and Air-Sea Feedbacks.Journal of Geophysical Research: Atmospheres,126(20).
MLA	Sérazin G.,et al."East Australian Cyclones and Air-Sea Feedbacks".Journal of Geophysical Research: Atmospheres 126.20(2021).