Early Holocene terrestrial climatic variability along a North Atlantic Island transect: palaeoceanographic implications

Camilla S. Andresen, Svante Björck, Catherine Jessen, Mats Rundgren

Research output: Contribution to journalArticleResearchpeer-review

16 Citations (Scopus)

Abstract

A synthesis of the early Holocene climatic development in the North Atlantic region is presented, based on three previously published lake records from southern Greenland (Lake N14), Iceland (Lake Torfadalsvatn) and the Faroe Islands (Lake Lykkjuvøtn). The interval 11 500-8500 cal BP has been divided into five phases with respect to the inferred strength of the North Atlantic Current (NAC) and Irminger Currents (IC). Phase 1 (11 500-10 750 cal BP) was characterised by the first establishment of the NAC and IC in the vicinity of the studied sites, interrupted by the Preboreal Oscillation around 11 200 cal BP. Phase 2 (10 750-10 100 cal BP) was marked by a further warming step in southern Greenland rather concordant with a change into colder and more variable winters on the Faroe Islands. It is proposed that this could partly be related to a series of melt water outbursts disturbing the thermohaline circulation in the eastern Atlantic Ocean, resulting in a warming trend in the western region. During Phase 3 (10 100-9400 cal BP) the strength of the IC reaching northwestern Iceland intensified. A more stable regime in surface circulation was established at the onset of Phase 4 (9400-8900 cal BP) in southern Greenland and was followed by a change towards further warm conditions on Iceland at the onset of Phase 5 (8900-8500 cal BP).

Original languageEnglish
Pages (from-to)1989-1998
Number of pages10
JournalQuaternary Science Reviews
Volume26
Issue number15-16
DOIs
Publication statusPublished - Aug 2007
Externally publishedYes

Programme Area

  • Programme Area 5: Nature and Climate

Fingerprint

Dive into the research topics of 'Early Holocene terrestrial climatic variability along a North Atlantic Island transect: palaeoceanographic implications'. Together they form a unique fingerprint.

Cite this