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Chapitre D'ouvrage Année : 2023

The Bølling–Allerød Interstadial

Filipa Naughton
  • Fonction : Auteur
María F. Sánchez-Goñi
  • Fonction : Auteur
Amaelle Landais
  • Fonction : Auteur
Teresa Rodrigues
  • Fonction : Auteur
Natalia Vazquez Riveiros
Samuel Toucanne

Résumé

The Bølling–Allerød (B-A), the terrestrial counterpart of Dansgaard–Oeschger 1, is the first abrupt northern hemisphere climate warming episode of the last deglaciation. Several hypotheses have been proposed to explain this event: all involve the strengthening of the Atlantic Meridional Overturning Circulation (AMOC) prior or during the Heinrich Stadial 1/B-A transition and the consequent warming of the northern hemisphere. Terrestrial proxies (mainly pollen and speleothems) reflect a progressive increase in moisture availability from the Bølling to the Allerød in Europe contrasting with Greenland isotope records which show maxima in temperature and precipitation at the onset of the Bølling and a gradual decrease to the end of the Allerød. Changes in moisture availability in Europe are triggered by coupled interactions between the AMOC and changes in atmospheric dynamics led by the westerlies.
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Dates et versions

hal-04309710 , version 1 (27-11-2023)

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Citer

Filipa Naughton, María F. Sánchez-Goñi, Amaelle Landais, Teresa Rodrigues, Natalia Vazquez Riveiros, et al.. The Bølling–Allerød Interstadial. European Glacial Landscapes. The Last Deglaciation. 2023. Palacios David, Garcia-Ruiz José m., Hughes Philip D., Andrés Nuria (Eds.). ISBN 978-0-323-91899-2, DOI 10.1016/C2021-0-00331-X. Part II Climate changes during the Last Deglaciation in the Eastern North Atlantic region, Chap.6, pp.45-50, 2023, ⟨10.1016/B978-0-323-91899-2.00015-2⟩. ⟨hal-04309710⟩
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