Item

ITEM ACTIONS

This item is discarded!DetailsSummary

Discarded

Journal Article

Climate changes during the Late Glacial insouthern Europe: new insights based onpollen and brGDGTs of Lake Matese in Italy

Authors

Robles, Mary
External Organizations;

Peyron, Odile
External Organizations;

Ménot, Guillemette
External Organizations;

Brugiapaglia, Elisabetta
External Organizations;

Wulf, Sabine
External Organizations;

/persons/resource/appelt

Appelt, Oona
3.6 Chemistry and Physics of Earth Materials, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Blache, Marion
External Organizations;

Vannière, Boris
External Organizations;

Dugerdil, Lucas
External Organizations;

Paura, Bruno
External Organizations;

Ansanay-Alex, Salomé
External Organizations;

Cromartie, Amy
External Organizations;

Charlet, Laurent
External Organizations;

Guédron, Stephane
External Organizations;

de Beaulieu, Jacques-Louis
External Organizations;

Joannin, Sébastien
External Organizations;

External Ressource

No external resources are shared

Fulltext (public)

(No access)

Supplementary Material (public)

There is no public supplementary material available

Citation

Robles, M., Peyron, O., Ménot, G., Brugiapaglia, E., Wulf, S., Appelt, O., Blache, M., Vannière, B., Dugerdil, L., Paura, B., Ansanay-Alex, S., Cromartie, A., Charlet, L., Guédron, S., de Beaulieu, J.-L., Joannin, S. (2023): Climate changes during the Late Glacial insouthern Europe: new insights based onpollen and brGDGTs of Lake Matese in Italy. - Climate of the Past, 19, 2, 493-515.
https://doi.org/10.5194/cp-19-493-2023

Abstract

The Late Glacial (14 700–11 700 cal BP) is a key climate period marked by rapid but contrasted changes in the Northern Hemisphere. Indeed, regional climate differences have been evidenced during the Late Glacial in Europe and the northern Mediterranean. However, past climate patterns are still debated since temperature and precipitation changes are poorly investigated towards the lower European latitudes. Lake Matese in southern Italy is a key site in the central Mediterranean to investigate climate patterns during the Late Glacial. This study aims to reconstruct climate changes and their impacts at Matese using a multi-proxy approach including magnetic susceptibility, geochemistry (XRF core scanning), pollen data and molecular biomarkers like branched glycerol dialkyl glycerol tetraethers (brGDGTs). Paleotemperatures and paleo-precipitation patterns are quantitatively inferred from pollen assemblages (multi-method approach: modern analogue technique, weighted averaging partial least-squares regression, random forest and boosted regression trees) and brGDGT calibrations. The results are compared to a latitudinal selection of regional climate reconstructions in Italy to better understand climate processes in Europe and in the circum-Mediterranean region. A warm Bølling–Allerød and a marked cold Younger Dryas are revealed in all climate reconstructions inferred from various proxies (chironomids, ostracods, speleothems, pollen, brGDGTs), showing no latitudinal differences in terms of temperatures across Italy. During the Bølling–Allerød, no significant changes in terms of precipitation are recorded; however, a contrasted pattern is visible during the Younger Dryas. Slightly wetter conditions are recorded south of 42∘ N, whereas dry conditions are recorded north of 42∘ N. During the Younger Dryas, cold conditions can be attributed to the southward position of North Atlantic sea ice and of the polar frontal jet stream, whereas the increase in precipitation in southern Italy seems to be linked to relocation of Atlantic storm tracks into the Mediterranean, induced by the Fennoscandian ice sheet and the North European Plain. By contrast, warm conditions during the Bølling–Allerød can be linked to the northward position of North Atlantic sea ice and of the polar frontal jet stream.