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Reduced accuracy in dendroglaciological mass balance reconstruction of Storglaciären since the 1980s
Responsible organisation
2023 (English)In: The Holocene, ISSN 0959-6836, E-ISSN 1477-0911Article in journal (Refereed) Published
Abstract [en]

Recent studies have raised concerns regarding the reconstruction of glacier mass balance using tree-ring data. The method relies on a stable relationship between both variables and summer (June–August) or melt season (May–September) temperature. However, with recent anthropogenic climate change the stability of this relationship is challenged by both, a divergence between tree-ring and temperature, as well as mass balance and temperature data. Establishing to what extent this divergence influences the reconstruction of mass balance using tree-ring data is important to assess the future viability and applicability of the method. In this paper we analyze the relationship between the Torneträsk tree-ring and Storglaciären mass balance records, their response to climate change, and investigate changes in the relationship. We provide evidence for a sensitivity loss in the Torneträsk record and quantify its impact on the reconstruction of summer mass balance of Storglaciären. We find that by including years post 1980, the amplitude of reconstructed variability is reduced, but it remains possible to explain the variance of the record significantly. Our results suggest that for glaciers without an extensive mass balance record the applicability of the method is challenged.

Place, publisher, year, edition, pages
SAGE Publications Ltd , 2023.
National Category
Physical Geography
Identifiers
URN: urn:nbn:se:polar:diva-9069DOI: 10.1177/09596836231211873OAI: oai:DiVA.org:polar-9069DiVA, id: diva2:1820848
Conference
2023/12/18
Available from: 2023-12-19 Created: 2023-12-19 Last updated: 2023-12-19Bibliographically approved

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Publisher's full texthttps://doi.org/10.1177/09596836231211873
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The Holocene
Physical Geography

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