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    Storminess in North West Europe and volcanic activity during the Holocene


    Orme, Lisa C., Ludlow, Francis, Langton, Natasha, Sjöström, Jenny K., Kylander, Malin E., Murphy, Conor, Pyne-O'Donnell, Sean D. F., Turner, Jonathan N., Li, Nannan, Davies, Sarah J., Mitchell, Fraser J. G. and Matthews, John A. (2026) Storminess in North West Europe and volcanic activity during the Holocene. Climate of the Past, 22 (2). pp. 287-313. ISSN 1814-9332

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    Abstract

    Evidence from observational records and model simulations suggest that volcanic eruptions can strengthen mid- to high-latitude atmospheric circulation and enhance westerly wind strength, with recent proxy data-model assimilations supporting this. However, assessments of Holocene variability in storminess rarely consider whether major volcanic eruptions could be a possible driver of reconstructed periods of enhanced storminess. This research presents a new reconstruction of past storminess from a coastal peatbog situated in western Ireland spanning the last ∼ 7 ka. The record is based on the measurement of the sand content along the core, with XRF core scanning analysis also applied to test whether variations in quartz sand, shell sand and sea spray can be detected by variations in silica, calcium and bromine respectively. Ca measurements were similar to the long-term changes in sand content along the core, however, peaks in sand content were not detected, while Si reflected increases in sand content only within the last millennium when the inorganic content was highest. Br concentrations appear to have been influenced primarily by humification. We also compared sand-based storminess records from northwest Europe. Six multi-decadal to centennial periods with enhanced storminess are common to records from Ireland and Wales during the last 2.5 ka BP, centred at c. 2.25, 2, 1.4, 1.1, 0.5 and 0.2 ka BP, with less agreement between records before this time. The storm periods at 2.8, 2.2–2, 1.1 and 0.5 ka BP are more widespread events and agree with records from Sweden and Scotland. Each of the episodes of increased storminess coincide roughly with major volcanic eruptions during the late Holocene, as well as with periods of enhanced North Atlantic ice-rafting. We hypothesise, therefore, that both enhanced storminess and ice-rafting may have resulted from the climate and environmental impacts of these eruptions, aligning with the findings of recent observational and modelling studies on the climate response to eruptions. Challenges remain, however, in testing this hypothesis, given chronological uncertainties in peatland records and uncertain interpretations of the factors influencing sand deposition. Therefore, to provide an independent assessment of the influence of explosive eruptions on storminess for Ireland's northeast Atlantic position, we draw upon the rich tradition of annalistic record keeping on the island, including many reports of major storms and windy seasons, to develop a windiness index running from the sixth to seventeenth centuries CE. A set of superposed epoch analyses shows that the ice-core-based dates of explosive volcanic eruptions are statistically significantly associated with the dates of documented storms and windy seasons in Ireland, suggesting avenues for future research.
    Item Type: Article
    Additional Information: Aspects of this work (Irish annalistic evidence of storms and volcanism) benefited from discussion at events organised by the Volcanic Impacts on Climate and Society (VICS) Working Group of PAGES, funded by the Swiss Academy of Sciences and Chinese Academy of Sciences. Construction of the annalistic windiness index was also supported by fellowships from the Harvard University Center for the Environment (HUCE) and Initative for the Science of the Human Past (SoHP) at Harvard University
    Keywords: Storminess; North West Europe; volcanic activity; Holocene;
    Academic Unit: Faculty of Social Sciences > Geography
    Faculty of Social Sciences > Research Institutes > Irish Climate Analysis and Research Units, ICARUS
    Item ID: 21325
    Identification Number: 10.5194/cp-22-287-2026
    Depositing User: ICARUS Geography
    Date Deposited: 19 Mar 2026 12:42
    Journal or Publication Title: Climate of the Past
    Publisher: European Geosciences Union
    Refereed: Yes
    Related URLs:
    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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