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Categorizing and Naming MARINE HEATWAVES

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dc.contributor Univ New South Wales
dc.contributor Marine Biol Assoc Uk
dc.contributor Scottish Marine Inst
dc.contributor Climate Change Res Ctr
dc.contributor Aberystwyth Univ
dc.contributor University Of New South Wales Sydney
dc.contributor Sch Biol Sci
dc.contributor University Of Western Australia
dc.contributor Uhi Millennium Institute
dc.contributor Oceans Inst
dc.contributor Uwa Oceans Inst
dc.contributor Aberystwyth University
dc.contributor Institute Of Biological, Environmental, Rural & Sciences (ibers)
dc.contributor Marine Biological Association United Kingdom
dc.contributor Arc Ctr Excellence Climate Syst Sci
dc.contributor Dept Oceanog
dc.contributor Commonwealth Scientific & Industrial Research Organisation (csiro)
dc.contributor University Of Canterbury
dc.contributor University Of Tasmania
dc.contributor Australian Inst Marine Sci
dc.contributor Inst Biol Environm & Rural Sci
dc.contributor Univ Tasmania
dc.contributor Arc Ctr Excellence Climate Extremes
dc.contributor Csiro Oceans & Atmosphere
dc.contributor Uwa
dc.contributor Scottish Assoc Marine Sci
dc.contributor Univ Canterbury
dc.contributor Inst Marine & Antarctic Studies
dc.contributor Australian Institute Of Marine Science
dc.contributor Dalhousie Univ
dc.contributor Dalhousie University
dc.contributor.author THOMSEN, MADS S.
dc.contributor.author OLIVER, ERIC C. J.
dc.contributor.author SEN GUPTA, ALEX
dc.contributor.author BURROWS, MICHAEL T.
dc.contributor.author DONAT, MARKUS G.
dc.contributor.author MOORE, PIPPA J.
dc.contributor.author WERNBERG, THOMAS
dc.contributor.author SMALE, DAN A.
dc.contributor.author HOBDAY, ALISTAIR J.
dc.contributor.author BENTHUYSEN, JESSICA A.
dc.contributor.author HOLBROOK, NEIL J.
dc.date.accessioned 2019-01-06T19:00:20Z
dc.date.accessioned 2019-01-06T19:00:20Z
dc.date.accessioned 2019-05-09T01:21:50Z
dc.date.available 2019-01-06T19:00:20Z
dc.date.available 2019-01-06T19:00:20Z
dc.date.available 2019-05-09T01:21:50Z
dc.date.issued 2018-06-01
dc.identifier.citation Hobday AJ, Oliver ECJ, Sen Gupta A, Benthuysen JA, Burrows MT, Donat MG, Holbrook NJ, Moore PJ, Thomsen MS, Wernberg T, Smale DA (2018) Categorizing and Naming Marine Heatwaves. Oceanography31: 162-173
dc.identifier.issn 1042-8275
dc.identifier.uri http://epubs.aims.gov.au/11068/14916
dc.description.abstract Considerable attention has been directed at understanding the consequences and impacts of long-term anthropogenic climate change. Discrete, climatically extreme events such as cyclones, floods, and heatwaves can also significantly affect regional environments and species, including humans. Climate change is expected to intensify these events and thus exacerbate their effects. Climatic extremes also occur in the ocean, and recent decades have seen many high-impact marine heatwaves (MHWs)-anomalously warm water events that may last many months and extend over thousands of square kilometers. A range of biological, economic, and political impacts have been associated with the more intense MHWs, and measuring the severity of these phenomena is becoming more important. Progress in understanding and public awareness will be facilitated by consistent description of these events. Here, we propose a detailed categorization scheme for MHWs that builds on a recently published classification, combining elements from schemes that describe atmospheric heatwaves and hurricanes. Category I, II, III, and IV MHWs are defined based on the degree to which temperatures exceed the local climatology and illustrated for 10 MHWs. While there is a long-term increase in the occurrence frequency of all MHW categories, the largest trend is a 24% increase in the area of the ocean where strong (Category II) MHWs occur. Use of this scheme can help explain why biological impacts associated with different MHWs can vary widely and provides a consistent way to compare events. We also propose a simple naming convention based on geography and year that would further enhance scientific and public awareness of these marine events.
dc.description.sponsorship The NOAA High Resolution SST data (OISST V2) was provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, https://www.esrl.noaa.gov/psd.We appreciate the comments from three reviewers and the editor that improved the clarity of arguments presented here. This study is an output of the Marine Heatwaves Working Group, was supported by a NERC International Opportunity Fund awarded to DAS (NE/N00678X/1), and constitutes contributions to the Australian Research Council (ARC) Centre of Excellence for Climate System Science (ARCCSS) and National Environmental Science Programme Earth Systems and Climate Change Hub (Project 2.3 component 2) and the ARC Centre of Excellence for Climate Extremes and the International Commission on Climate of IAMAS/IUGG. EO was supported by ARCCSS grant CE110001028, TW by ARC Discovery grant DP170100023, and MGD by ARC grant DE150100456. PM was supported by Marie Curie CIG PCIG10-GA-2011-303685 and NERC grant NE/J024082/1, DAS was supported by NERC grant NE/K008439/1, NJH by the ARC Centre of Excellence for Climate Extremes (CE170100023).
dc.language English
dc.subject Ecosystem
dc.subject Benthic Community
dc.subject Consequences
dc.subject Impacts
dc.subject Sea
dc.subject Mass Mortality Event
dc.subject Summer
dc.subject 2003 European Heatwave
dc.subject Oceanography
dc.subject Water
dc.title Categorizing and Naming MARINE HEATWAVES
dc.type journal article
dc.identifier.doi 10.5670/oceanog.2018.205
dc.identifier.wos WOS:000452824700023


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