An oceanic perspective on Greenland’s recent freshwater discharge since 1850
Instrumental data evidence an accelerating freshwater release from Arctic sea ice export and the Greenland Ice Sheet over the past three decades causing cooling and freshening in the subpolar North Atlantic region. However, evaluating the observed acceleration on a historical oceanic and climatic pe...
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ftunivbergen:oai:bora.uib.no:11250/2729184 2023-05-15T15:03:17+02:00 An oceanic perspective on Greenland’s recent freshwater discharge since 1850 Perner, Kerstin Moros, Matthias Otterå, Odd Helge Blanz, Thomas Schneider, Ralph R. Jansen, Eystein 2019 application/pdf https://hdl.handle.net/11250/2729184 https://doi.org/10.1038/s41598-019-53723-z eng eng Nature Research EU/610055 urn:issn:2045-2322 https://hdl.handle.net/11250/2729184 https://doi.org/10.1038/s41598-019-53723-z cristin:1754378 Scientific Reports. 2019, 9, 17680. Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright The Author(s) 2019 17680 Scientific Reports 9 1 Journal article Peer reviewed 2019 ftunivbergen https://doi.org/10.1038/s41598-019-53723-z 2023-03-14T17:40:21Z Instrumental data evidence an accelerating freshwater release from Arctic sea ice export and the Greenland Ice Sheet over the past three decades causing cooling and freshening in the subpolar North Atlantic region. However, evaluating the observed acceleration on a historical oceanic and climatic perspective remains challenging given the short available instrumental time series. Here we provide a marine perspective on the freshwater releases to the ocean since 1850 as reflected in the northern limb of the Subpolar Gyre. Our reconstructions suggest that the recent acceleration tracks back to the 1940s/50s and is unprecedented since 1850. The melting, initiated by the 1920s natural rise in solar irradiance, accelerated in response to a combined effect of natural and anthropogenic forcing factors. We find that Greenland’s freshwater discharge has contributed to a nutrient-driven fertilization of the upper ocean and consequently increased the marine primary productivity since the 1940s/50s. publishedVersion Article in Journal/Newspaper Arctic Greenland Ice Sheet North Atlantic Sea ice University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Greenland Scientific Reports 9 1 |
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Open Polar |
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University of Bergen: Bergen Open Research Archive (BORA-UiB) |
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ftunivbergen |
language |
English |
description |
Instrumental data evidence an accelerating freshwater release from Arctic sea ice export and the Greenland Ice Sheet over the past three decades causing cooling and freshening in the subpolar North Atlantic region. However, evaluating the observed acceleration on a historical oceanic and climatic perspective remains challenging given the short available instrumental time series. Here we provide a marine perspective on the freshwater releases to the ocean since 1850 as reflected in the northern limb of the Subpolar Gyre. Our reconstructions suggest that the recent acceleration tracks back to the 1940s/50s and is unprecedented since 1850. The melting, initiated by the 1920s natural rise in solar irradiance, accelerated in response to a combined effect of natural and anthropogenic forcing factors. We find that Greenland’s freshwater discharge has contributed to a nutrient-driven fertilization of the upper ocean and consequently increased the marine primary productivity since the 1940s/50s. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Perner, Kerstin Moros, Matthias Otterå, Odd Helge Blanz, Thomas Schneider, Ralph R. Jansen, Eystein |
spellingShingle |
Perner, Kerstin Moros, Matthias Otterå, Odd Helge Blanz, Thomas Schneider, Ralph R. Jansen, Eystein An oceanic perspective on Greenland’s recent freshwater discharge since 1850 |
author_facet |
Perner, Kerstin Moros, Matthias Otterå, Odd Helge Blanz, Thomas Schneider, Ralph R. Jansen, Eystein |
author_sort |
Perner, Kerstin |
title |
An oceanic perspective on Greenland’s recent freshwater discharge since 1850 |
title_short |
An oceanic perspective on Greenland’s recent freshwater discharge since 1850 |
title_full |
An oceanic perspective on Greenland’s recent freshwater discharge since 1850 |
title_fullStr |
An oceanic perspective on Greenland’s recent freshwater discharge since 1850 |
title_full_unstemmed |
An oceanic perspective on Greenland’s recent freshwater discharge since 1850 |
title_sort |
oceanic perspective on greenland’s recent freshwater discharge since 1850 |
publisher |
Nature Research |
publishDate |
2019 |
url |
https://hdl.handle.net/11250/2729184 https://doi.org/10.1038/s41598-019-53723-z |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland Ice Sheet North Atlantic Sea ice |
genre_facet |
Arctic Greenland Ice Sheet North Atlantic Sea ice |
op_source |
17680 Scientific Reports 9 1 |
op_relation |
EU/610055 urn:issn:2045-2322 https://hdl.handle.net/11250/2729184 https://doi.org/10.1038/s41598-019-53723-z cristin:1754378 Scientific Reports. 2019, 9, 17680. |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright The Author(s) 2019 |
op_doi |
https://doi.org/10.1038/s41598-019-53723-z |
container_title |
Scientific Reports |
container_volume |
9 |
container_issue |
1 |
_version_ |
1766335155466665984 |