McCarthy, Gerard and Plecha, Sandra and Charria, Guillaume and Simon, Amélie and Poppeschi, Coline and Russo, Ana (2023) The marine heatwave west of Ireland in June 2023. Weather, 78 (11). pp. 321-323. ISSN 0043-1656

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Abstract

The summer of 2023 had been notable for a number of climate extremes: sea ice in the Antarctic dropped to its lowest for the time of year since satellite records began in the 1970s (NASA Earth Observatory, 2023), terrestrial heatwaves engulfed southern Europe and southern United States/Mexico that would have been ‘virtually impossible’ without climate change (WorldWeatherAttribution, 2023), and sea-surface temperatures (SSTs) in the North Atlantic reached their highest since satellite records began in 1982 (NOAA, 2023). In concert with these terrestrial heatwaves and high Atlantic SSTs, a severe marine heatwave(MHW) developed in the eastern North Atlantic, west of Ireland (Figure 1a). Except for a narrow band close to the coast from Greenland to Canada, SSTs everywhere in the North Atlantic were above the 41-yearaverage (1982–2023), with many regions experiencing temperatures 2 degC higher than average. In the study region westof Ireland (highlighted in Figure 1b), the SST reached an impressive 4 degC above average.

Item Type:	Article
Additional Information:	GM, SMP, AR and AS are supported by under the 2019 JPI Climate and JPI Oceans Joint Call project ROADMAP, carried out with the support of the Marine Institute and funded by the Irish Government in Ireland (Grant-Aid Agreement No. PBA/ CC/20/01) and with the support of the Fundação para a Ciência e a Tecnologia, I.P./ MCTES, through National Funds in Portugal (PIDDAC; grant no. UIDB/50019/2020 to Instituto Dom Luiz; project ROADMAP grant no. JPIOCEANS/0001/2019). AR and SMP also acknowledge the Fundação para a Ciência e a Tecnologia, I.P./MCTES: 2022. 01167.CEECIND and 2021.00988.CEECIND,respectively.
Keywords:	sea surface temperatures; STTs; North Atlantic; Ireland; marine heatwave;
Academic Unit:	Faculty of Social Sciences > Research Institutes > Irish Climate Analysis and Research Units, ICARUS
Item ID:	17845
Identification Number:	https://doi.org/10.1002/wea.4498
Depositing User:	Corinne Voces
Date Deposited:	16 Nov 2023 11:18
Journal or Publication Title:	Weather
Publisher:	Royal Meteorological Society
Refereed:	Yes
Funders:	Marine Institute
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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