Atmospheric circulation over Europe during the Younger Dryas

Brice Rea* (Corresponding Author), Roger Braithwaite, Matteo Spagnolo, Susan Ivy-Ochs, Hans Renssen, Ramon Pellitero, Philip Hughes, Adriano Ribolini, Sven Lukas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The Younger Dryas (YD) was a period of rapid climate cooling that occurred at the end of the last glaciation. Here, we present the first palaeoglacier-derived reconstruction of YD precipitation across Europe, determined from 122 reconstructed glaciers and proxy atmospheric temperatures. Positive precipitation anomalies (YD versus modern) are found along much of the western seaboard of Europe and across the Mediterranean. Negative precipitation anomalies occur over the Fennoscandian ice sheet, the North European Plain, and as far south as the Alps. This is consistent with a more southerly and zonal storm track, which is linked to a concomitant southern location of the Polar Frontal Jet Stream, generating cold air outbreaks and enhanced cyclogenesis, especially over the eastern Mediterranean. This atmospheric configuration resembles the modern Scandinavian (SCAND) circulation over Europe (a blocking high pressure over Scandinavia pushing storm tracks south and east), and by analogy, a seasonally varying palaeoprecipitation pattern is interpreted.

Original languageEnglish
Article numbereaba4844
Number of pages14
JournalScience Advances
Volume6
Issue number50
DOIs
Publication statusPublished - 11 Dec 2020

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