| Title: | Atmosphere–cryosphere interactions during the last phase of the Last Glacial Maximum (21 ka) in the European Alps |
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| Authors: | ID Del Gobbo, Costanza (Author)
ID Colucci, Renato R. (Author)
ID Monegato, Giovanni (Author)
ID Žebre, Manja (Author)
ID Giorgi, Filippo (Author) |
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| Files: |  PDF - Presentation file, download (10,56 MB)
MD5: 34544988F54AF937C77E346EBA2D6056
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  GeoZS - Geological Survey of Slovenia
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| Abstract: | Evidence that during the Last Glacial Maximum (LGM) glaciers extended well into the piedmont plains is still identifiable in the alpine foreland as a system of well-preserved moraines. Glaciers are strongly controlled by temperature and precipitation, and therefore, they are excellent indicators of climate change. Here, we use a regional climate model (RCM) to investigate some of the physical processes sustaining Alpine glaciers during the last phase of the LGM during Greenland Stadial 2 at 21 ka. We find a predominance of convection during summer and increased southwesterly stratiform precipitation over the southern Alps when compared to pre-industrial (PI) conditions. This precipitation pattern, along with lower temperatures, determined summer snowfall extending to low elevations, with a consequent substantial drop of the equilibrium line altitude (ELA), which is consistent with the estimated LGM glacier extent. Our RCM-based estimates of 21 ka ELA at the LGM yield excellent consistency with Alpine ELA reconstructions, further demonstrating the great potential of this technique for use in palaeoclimate studies. |
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| Keywords: | Quaternary, ice age, atmosphere, glaciers, climate change, the Alps |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 15.09.2023 |
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| Publisher: | European Geosciences Union |
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| Year of publishing: | 2023 |
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| Number of pages: | str. 1805–1823 |
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| Numbering: | vol. 19, no. 9 |
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| PID: | 20.500.12556/DiRROS-17066  |
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| UDC: | 551.7 |
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| ISSN on article: | 1814-9332 |
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| DOI: | 10.5194/cp-19-1805-2023 |
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| COBISS.SI-ID: | 164827139 |
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| Publication date in DiRROS: | 19.09.2023 |
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| Views: | 736 |
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| Downloads: | 263 |
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