Geochemical biomarker analyses on sediment cores PS2641-4 (GC) and PS2641-5 (GKG) from the East Greenland Shelf
Arctic sea ice is a critical component of the climate system as it influences the albedo, heat, moisture and gas exchange between ocean and atmosphere as well as the ocean's salinity. An ideal location to study natural sea-ice variability during pre-industrial times is the East Greenland Shelf...
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.871904 https://doi.org/10.1594/PANGAEA.871904 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.871904 2023-05-15T13:11:35+02:00 Geochemical biomarker analyses on sediment cores PS2641-4 (GC) and PS2641-5 (GKG) from the East Greenland Shelf Kolling, Henriette Marie Stein, Ruediger Fahl, Kirsten Perner, Kerstin Moros, Matthias MEDIAN LATITUDE: 73.155000 * MEDIAN LONGITUDE: -19.483330 * SOUTH-BOUND LATITUDE: 73.155000 * WEST-BOUND LONGITUDE: -19.485000 * NORTH-BOUND LATITUDE: 73.155000 * EAST-BOUND LONGITUDE: -19.481660 * DATE/TIME START: 1994-09-14T21:06:00 * DATE/TIME END: 1994-09-14T21:31:00 2017-02-09 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.871904 https://doi.org/10.1594/PANGAEA.871904 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.871904 https://doi.org/10.1594/PANGAEA.871904 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Kolling, Henriette Marie; Stein, Ruediger; Fahl, Kirsten; Perner, Kerstin; Moros, Matthias (2017): Short-term variability in late Holocene sea-ice cover on the East Greenland Shelf and its driving mechanisms. Palaeogeography, Palaeoclimatology, Palaeoecology, 485, 336-350, https://doi.org/10.1016/j.palaeo.2017.06.024 AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Dataset 2017 ftpangaea https://doi.org/10.1594/PANGAEA.871904 https://doi.org/10.1016/j.palaeo.2017.06.024 2023-01-20T07:33:53Z Arctic sea ice is a critical component of the climate system as it influences the albedo, heat, moisture and gas exchange between ocean and atmosphere as well as the ocean's salinity. An ideal location to study natural sea-ice variability during pre-industrial times is the East Greenland Shelf that underlies the East Greenland Current (EGC), the main route of Arctic sea ice and freshwaters from the Arctic Ocean into the northern North Atlantic. Here, we present a new high-resolution biomarker record from the East Greenland Shelf (73°N), which provides new insights into the seaice variability and accompanying phytoplankton productivity over the past 5.2 ka. Our IP25 based sea-ice reconstructions and the inferred PIP25 index do not reflect the wide-spread late Holocene Neoglacial cooling trend that follows the decreasing solar insolation pattern, which we relate to the strong influence of the polar EGC on the East Greenland Shelf throughout the studied time interval. However, our reconstructions reveal several oscillations with increasing/decreasing sea-ice concentrations that are linked to the known late Holocene climate cold/warm phases, i.e. the Roman Warm Period, Dark Ages Cold Period, Medieval Warm Period and Little Ice Age. Shifts in the North Atlantic Oscillation (NAO) regime seem to have triggered the short-term variability in sea-ice extent on the East Greenland Shelf. Furthermore, we identify a cyclicity of 73-74 years in sea-ice algae and phytoplankton productivity over the last 1.2 ka. Dataset albedo Arctic Arctic Ocean East Greenland east greenland current Greenland ice algae North Atlantic North Atlantic oscillation Phytoplankton Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean Greenland ENVELOPE(-19.485000,-19.481660,73.155000,73.155000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
spellingShingle |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI Kolling, Henriette Marie Stein, Ruediger Fahl, Kirsten Perner, Kerstin Moros, Matthias Geochemical biomarker analyses on sediment cores PS2641-4 (GC) and PS2641-5 (GKG) from the East Greenland Shelf |
topic_facet |
AWI_Paleo Paleoenvironmental Reconstructions from Marine Sediments @ AWI |
description |
Arctic sea ice is a critical component of the climate system as it influences the albedo, heat, moisture and gas exchange between ocean and atmosphere as well as the ocean's salinity. An ideal location to study natural sea-ice variability during pre-industrial times is the East Greenland Shelf that underlies the East Greenland Current (EGC), the main route of Arctic sea ice and freshwaters from the Arctic Ocean into the northern North Atlantic. Here, we present a new high-resolution biomarker record from the East Greenland Shelf (73°N), which provides new insights into the seaice variability and accompanying phytoplankton productivity over the past 5.2 ka. Our IP25 based sea-ice reconstructions and the inferred PIP25 index do not reflect the wide-spread late Holocene Neoglacial cooling trend that follows the decreasing solar insolation pattern, which we relate to the strong influence of the polar EGC on the East Greenland Shelf throughout the studied time interval. However, our reconstructions reveal several oscillations with increasing/decreasing sea-ice concentrations that are linked to the known late Holocene climate cold/warm phases, i.e. the Roman Warm Period, Dark Ages Cold Period, Medieval Warm Period and Little Ice Age. Shifts in the North Atlantic Oscillation (NAO) regime seem to have triggered the short-term variability in sea-ice extent on the East Greenland Shelf. Furthermore, we identify a cyclicity of 73-74 years in sea-ice algae and phytoplankton productivity over the last 1.2 ka. |
format |
Dataset |
author |
Kolling, Henriette Marie Stein, Ruediger Fahl, Kirsten Perner, Kerstin Moros, Matthias |
author_facet |
Kolling, Henriette Marie Stein, Ruediger Fahl, Kirsten Perner, Kerstin Moros, Matthias |
author_sort |
Kolling, Henriette Marie |
title |
Geochemical biomarker analyses on sediment cores PS2641-4 (GC) and PS2641-5 (GKG) from the East Greenland Shelf |
title_short |
Geochemical biomarker analyses on sediment cores PS2641-4 (GC) and PS2641-5 (GKG) from the East Greenland Shelf |
title_full |
Geochemical biomarker analyses on sediment cores PS2641-4 (GC) and PS2641-5 (GKG) from the East Greenland Shelf |
title_fullStr |
Geochemical biomarker analyses on sediment cores PS2641-4 (GC) and PS2641-5 (GKG) from the East Greenland Shelf |
title_full_unstemmed |
Geochemical biomarker analyses on sediment cores PS2641-4 (GC) and PS2641-5 (GKG) from the East Greenland Shelf |
title_sort |
geochemical biomarker analyses on sediment cores ps2641-4 (gc) and ps2641-5 (gkg) from the east greenland shelf |
publisher |
PANGAEA |
publishDate |
2017 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.871904 https://doi.org/10.1594/PANGAEA.871904 |
op_coverage |
MEDIAN LATITUDE: 73.155000 * MEDIAN LONGITUDE: -19.483330 * SOUTH-BOUND LATITUDE: 73.155000 * WEST-BOUND LONGITUDE: -19.485000 * NORTH-BOUND LATITUDE: 73.155000 * EAST-BOUND LONGITUDE: -19.481660 * DATE/TIME START: 1994-09-14T21:06:00 * DATE/TIME END: 1994-09-14T21:31:00 |
long_lat |
ENVELOPE(-19.485000,-19.481660,73.155000,73.155000) |
geographic |
Arctic Arctic Ocean Greenland |
geographic_facet |
Arctic Arctic Ocean Greenland |
genre |
albedo Arctic Arctic Ocean East Greenland east greenland current Greenland ice algae North Atlantic North Atlantic oscillation Phytoplankton Sea ice |
genre_facet |
albedo Arctic Arctic Ocean East Greenland east greenland current Greenland ice algae North Atlantic North Atlantic oscillation Phytoplankton Sea ice |
op_source |
Supplement to: Kolling, Henriette Marie; Stein, Ruediger; Fahl, Kirsten; Perner, Kerstin; Moros, Matthias (2017): Short-term variability in late Holocene sea-ice cover on the East Greenland Shelf and its driving mechanisms. Palaeogeography, Palaeoclimatology, Palaeoecology, 485, 336-350, https://doi.org/10.1016/j.palaeo.2017.06.024 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.871904 https://doi.org/10.1594/PANGAEA.871904 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.871904 https://doi.org/10.1016/j.palaeo.2017.06.024 |
_version_ |
1766248059840233472 |