Relationship between Holocene climate variations over southern Greenland and eastern Baffin Island and synoptic circulation pattern
Lake pollen records from southwest Greenland and eastern Baffin Island show strong regionalism in climate trends of the last 7000 cal years. July surface air temperature reconstructions from pollen indicate larger amplitude cooling in southwest Greenland (>3.0°C) than in eastern Baffin Island (&l...
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fttriple:oai:gotriple.eu:10670/1.470byb 2023-05-15T15:35:21+02:00 Relationship between Holocene climate variations over southern Greenland and eastern Baffin Island and synoptic circulation pattern Fréchette, B. Vernal, A. 2018-09-27 https://doi.org/10.5194/cp-5-347-2009 https://cp.copernicus.org/articles/5/347/2009/ en eng doi:10.5194/cp-5-347-2009 10670/1.470byb https://cp.copernicus.org/articles/5/347/2009/ undefined Geographica Helvetica - geography eISSN: 1814-9332 envir geo Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ 2018 fttriple https://doi.org/10.5194/cp-5-347-2009 2023-01-22T18:50:53Z Lake pollen records from southwest Greenland and eastern Baffin Island show strong regionalism in climate trends of the last 7000 cal years. July surface air temperature reconstructions from pollen indicate larger amplitude cooling in southwest Greenland (>3.0°C) than in eastern Baffin Island (<1.0°C). This west-east gradient in climate change is consistent with August sea-surface temperature reconstructions from dinocyst records that indicate decreasing temperature and/or strength of the North Atlantic Current to the east during the Holocene while the eastern Canadian margins under the Labrador Current influence display slight warming. Complementary to air and sea-surface temperature records, the lake pollen data led to reconstruct increased cloudiness in southern Greenland, which points to increasing cyclonic activity since 7000 cal years BP west of Greenland. Together, the terrestrial and marine records of the northwest North Atlantic therefore suggest a shift from a dominant NAO+ during the early-mid Holocene to dominant NAO- in the late Holocene. Text Baffin Island Baffin Greenland north atlantic current North Atlantic Unknown Baffin Island Greenland Climate of the Past 5 3 347 359 |
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envir geo Fréchette, B. Vernal, A. Relationship between Holocene climate variations over southern Greenland and eastern Baffin Island and synoptic circulation pattern |
topic_facet |
envir geo |
description |
Lake pollen records from southwest Greenland and eastern Baffin Island show strong regionalism in climate trends of the last 7000 cal years. July surface air temperature reconstructions from pollen indicate larger amplitude cooling in southwest Greenland (>3.0°C) than in eastern Baffin Island (<1.0°C). This west-east gradient in climate change is consistent with August sea-surface temperature reconstructions from dinocyst records that indicate decreasing temperature and/or strength of the North Atlantic Current to the east during the Holocene while the eastern Canadian margins under the Labrador Current influence display slight warming. Complementary to air and sea-surface temperature records, the lake pollen data led to reconstruct increased cloudiness in southern Greenland, which points to increasing cyclonic activity since 7000 cal years BP west of Greenland. Together, the terrestrial and marine records of the northwest North Atlantic therefore suggest a shift from a dominant NAO+ during the early-mid Holocene to dominant NAO- in the late Holocene. |
format |
Text |
author |
Fréchette, B. Vernal, A. |
author_facet |
Fréchette, B. Vernal, A. |
author_sort |
Fréchette, B. |
title |
Relationship between Holocene climate variations over southern Greenland and eastern Baffin Island and synoptic circulation pattern |
title_short |
Relationship between Holocene climate variations over southern Greenland and eastern Baffin Island and synoptic circulation pattern |
title_full |
Relationship between Holocene climate variations over southern Greenland and eastern Baffin Island and synoptic circulation pattern |
title_fullStr |
Relationship between Holocene climate variations over southern Greenland and eastern Baffin Island and synoptic circulation pattern |
title_full_unstemmed |
Relationship between Holocene climate variations over southern Greenland and eastern Baffin Island and synoptic circulation pattern |
title_sort |
relationship between holocene climate variations over southern greenland and eastern baffin island and synoptic circulation pattern |
publishDate |
2018 |
url |
https://doi.org/10.5194/cp-5-347-2009 https://cp.copernicus.org/articles/5/347/2009/ |
geographic |
Baffin Island Greenland |
geographic_facet |
Baffin Island Greenland |
genre |
Baffin Island Baffin Greenland north atlantic current North Atlantic |
genre_facet |
Baffin Island Baffin Greenland north atlantic current North Atlantic |
op_source |
Geographica Helvetica - geography eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-5-347-2009 10670/1.470byb https://cp.copernicus.org/articles/5/347/2009/ |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-5-347-2009 |
container_title |
Climate of the Past |
container_volume |
5 |
container_issue |
3 |
container_start_page |
347 |
op_container_end_page |
359 |
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1766365691569504256 |