气候变化领域集成服务门户(CCPortal): The unprecedented coupled ocean-atmosphere summer heatwave in the New Zealand region 2017/18: Drivers, mechanisms and impacts

CCPortal

DOI	10.1088/1748-9326/ab012a
	The unprecedented coupled ocean-atmosphere summer heatwave in the New Zealand region 2017/18: Drivers, mechanisms and impacts
	Salinger M.J.; Renwick J.; Behrens E.; Mullan A.B.; Diamond H.J.; Sirguey P.; Smith R.O.; Trought M.C.T.; Alexander L.; Cullen N.J.; Fitzharris B.B.; Hepburn C.D.; Parker A.K.; Sutton P.J.
发表日期	2019
ISSN	17489318
卷号	14 期号:4
英文摘要	During austral summer (DJF) 2017/18, the New Zealand region experienced an unprecedented coupled ocean-atmosphere heatwave, covering an area of 4 million km2. Regional average air temperature anomalies over land were +2.2 °C, and sea surface temperature anomalies reached +3.7 °C in the eastern Tasman Sea. This paper discusses the event, including atmospheric and oceanic drivers, the role of anthropogenic warming, and terrestrial and marine impacts. The heatwave was associated with very low wind speeds, reducing upper ocean mixing and allowing heat fluxes from the atmosphere to the ocean to cause substantial warming of the stratified surface layers of the Tasman Sea. The event persisted for the entire austral summer resulting in a 3.8 ± 0.6 km3 loss of glacier ice in the Southern Alps (the largest annual loss in records back to 1962), very early Sauvignon Blanc wine-grape maturation in Marlborough, and major species disruption in marine ecosystems. The dominant driver was positive Southern Annular Mode (SAM) conditions, with a smaller contribution from La Niña. The long-term trend towards positive SAM conditions, a result of stratospheric ozone depletion and greenhouse gas increase, is thought to have contributed through association with more frequent anticyclonic 'blocking' conditions in the New Zealand region and a more poleward average latitude for the Southern Ocean storm track. The unprecedented heatwave provides a good analogue for possible mean conditions in the late 21st century. The best match suggests this extreme summer may be typical of average New Zealand summer climate for 2081-2100, under the RCP4.5 or RCP6.0 scenario. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	anthropogenic global warming; atmospheric heatwave; marine ecosystems; marine heatwave; Southern Alps glacier ice volume; wine grapes
语种	英语
scopus关键词	Aquatic ecosystems; Atmospheric temperature; Ecosystems; Global warming; Greenhouse gases; Ozone layer; Surface waters; Upper atmosphere; Wine; Anthropogenic global warming; Average air temperature; Glacier ice; marine heatwave; Sea surface temperature anomalies; Southern Annular Mode; Stratospheric ozone depletion; Wine grapes; Oceanography; air temperature; air-sea interaction; global warming; heat wave; La Nina; marine ecosystem; ozone depletion; sea surface temperature; spatiotemporal analysis; storm track; summer; temperature anomaly; Marlborough; New Zealand; New Zealand; Pacific Ocean; South Island; Southern Alps; Southern Ocean; Tasman Sea; Vitis vinifera
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154619
作者单位	Department of Geography and Environmental Studies, University of Haifa, Mt. Carmel, Haifa, 31905, Israel; School of Geography, Environment and Earth Sciences, Victoria University of Wellington, Wellington, New Zealand; National Institute of Water and Atmospheric Research, Wellington, New Zealand; NOAA/Air Resources Laboratory, Silver Spring, MD 20910, United States; National School of Surveying, University of Otago, Dunedin, New Zealand; Department of Marine Science, University of Otago, Dunedin, New Zealand; Plant and Food Research, Blenheim, New Zealand; Climate Change Research Centre, ARC Centre of Excellence for Climate Extremes, UNSW Sydney, Sydney, Australia; Department of Geography, University of Otago, Dunedin, New Zealand; Department of Wine, Food and Molecular Biosciences, Lincoln University, Lincoln, New Zealand
推荐引用方式 GB/T 7714	Salinger M.J.,Renwick J.,Behrens E.,et al. The unprecedented coupled ocean-atmosphere summer heatwave in the New Zealand region 2017/18: Drivers, mechanisms and impacts[J],2019,14(4).
APA	Salinger M.J..,Renwick J..,Behrens E..,Mullan A.B..,Diamond H.J..,...&Sutton P.J..(2019).The unprecedented coupled ocean-atmosphere summer heatwave in the New Zealand region 2017/18: Drivers, mechanisms and impacts.Environmental Research Letters,14(4).
MLA	Salinger M.J.,et al."The unprecedented coupled ocean-atmosphere summer heatwave in the New Zealand region 2017/18: Drivers, mechanisms and impacts".Environmental Research Letters 14.4(2019).