Understanding the climatic signal in the water stable isotope records from the NEEM shallow firn/ice cores in northwest Greenland
peer reviewed Samples of precipitation and atmospheric water vapor were collected together with shallow firn/ice cores as part of the new deep drilling project in northwest Greenland: the NEEM project. These samples were analyzed for their isotope composition to understand the processes affecting th...
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American Geophysical Union (AGU)
2011
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Online Access: | https://orbi.uliege.be/handle/2268/103392 https://doi.org/10.1029/2010JD014311 |
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ftorbi:oai:orbi.ulg.ac.be:2268/103392 2024-04-21T07:57:39+00:00 Understanding the climatic signal in the water stable isotope records from the NEEM shallow firn/ice cores in northwest Greenland Steen-Larsen, Masson-Delmotte, Sjolte, Johnsen, Vinther, Bréon, Clausen, Dahl-Jensen, Falourd, Fettweis, Xavier Gallée, Jouzel, Kageyama, Lerche, Minster, Picard, Punge, Risi, Salas, Schwander, Steffen, Sveinbjörnsdóttir, Svensson, White 2011-03-22 https://orbi.uliege.be/handle/2268/103392 https://doi.org/10.1029/2010JD014311 en eng American Geophysical Union (AGU) http://www.agu.org/pubs/crossref/2011/2010JD014311.shtml urn:issn:2169-897X urn:issn:2169-8996 https://orbi.uliege.be/handle/2268/103392 info:hdl:2268/103392 doi:10.1029/2010JD014311 scopus-id:2-s2.0-79952998507 restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess Journal of Geophysical Research. Atmospheres, 116, 20 (2011-03-22) Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2011 ftorbi https://doi.org/10.1029/2010JD014311 2024-03-27T14:53:33Z peer reviewed Samples of precipitation and atmospheric water vapor were collected together with shallow firn/ice cores as part of the new deep drilling project in northwest Greenland: the NEEM project. These samples were analyzed for their isotope composition to understand the processes affecting the climatic signal archived in the water stable isotope records from the NEEM deep ice core. The dominant moisture source for the snow deposited at the NEEM-site may be originating as far south as 35°N from the western part of the Atlantic Ocean. The surface atmospheric water vapor appears in isotopic equilibrium with the snow surface indicating a large water exchange between the atmosphere and snowpack. The interannual variability of NEEM shallow firn/ice cores stable isotope data covering the last ∼40 years shows an unexpectedly weak NAO signal. Regional to global atmospheric models simulate a dominant summer precipitation in the NEEM area, suggesting that the intermittency of modern winter precipitation is responsible for the lack of a strong NAO imprint. The interannual variability of NEEM isotope data however shows a strong correlation with interannual variations of Baffin Bay sea ice cover, a relationship consistent with air mass trajectories. NEEM deep ice core isotopic records may therefore provide detailed information on past Baffin Bay sea ice extent. NEEM stable water isotope content increasing trend points to a local warming trend of ∼3.0°C over the last 40 years. Article in Journal/Newspaper Baffin Bay Baffin Bay Baffin Greenland ice core Sea ice University of Liège: ORBi (Open Repository and Bibliography) Journal of Geophysical Research 116 D6 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Steen-Larsen, Masson-Delmotte, Sjolte, Johnsen, Vinther, Bréon, Clausen, Dahl-Jensen, Falourd, Fettweis, Xavier Gallée, Jouzel, Kageyama, Lerche, Minster, Picard, Punge, Risi, Salas, Schwander, Steffen, Sveinbjörnsdóttir, Svensson, White Understanding the climatic signal in the water stable isotope records from the NEEM shallow firn/ice cores in northwest Greenland |
topic_facet |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed Samples of precipitation and atmospheric water vapor were collected together with shallow firn/ice cores as part of the new deep drilling project in northwest Greenland: the NEEM project. These samples were analyzed for their isotope composition to understand the processes affecting the climatic signal archived in the water stable isotope records from the NEEM deep ice core. The dominant moisture source for the snow deposited at the NEEM-site may be originating as far south as 35°N from the western part of the Atlantic Ocean. The surface atmospheric water vapor appears in isotopic equilibrium with the snow surface indicating a large water exchange between the atmosphere and snowpack. The interannual variability of NEEM shallow firn/ice cores stable isotope data covering the last ∼40 years shows an unexpectedly weak NAO signal. Regional to global atmospheric models simulate a dominant summer precipitation in the NEEM area, suggesting that the intermittency of modern winter precipitation is responsible for the lack of a strong NAO imprint. The interannual variability of NEEM isotope data however shows a strong correlation with interannual variations of Baffin Bay sea ice cover, a relationship consistent with air mass trajectories. NEEM deep ice core isotopic records may therefore provide detailed information on past Baffin Bay sea ice extent. NEEM stable water isotope content increasing trend points to a local warming trend of ∼3.0°C over the last 40 years. |
format |
Article in Journal/Newspaper |
author |
Steen-Larsen, Masson-Delmotte, Sjolte, Johnsen, Vinther, Bréon, Clausen, Dahl-Jensen, Falourd, Fettweis, Xavier Gallée, Jouzel, Kageyama, Lerche, Minster, Picard, Punge, Risi, Salas, Schwander, Steffen, Sveinbjörnsdóttir, Svensson, White |
author_facet |
Steen-Larsen, Masson-Delmotte, Sjolte, Johnsen, Vinther, Bréon, Clausen, Dahl-Jensen, Falourd, Fettweis, Xavier Gallée, Jouzel, Kageyama, Lerche, Minster, Picard, Punge, Risi, Salas, Schwander, Steffen, Sveinbjörnsdóttir, Svensson, White |
author_sort |
Steen-Larsen, |
title |
Understanding the climatic signal in the water stable isotope records from the NEEM shallow firn/ice cores in northwest Greenland |
title_short |
Understanding the climatic signal in the water stable isotope records from the NEEM shallow firn/ice cores in northwest Greenland |
title_full |
Understanding the climatic signal in the water stable isotope records from the NEEM shallow firn/ice cores in northwest Greenland |
title_fullStr |
Understanding the climatic signal in the water stable isotope records from the NEEM shallow firn/ice cores in northwest Greenland |
title_full_unstemmed |
Understanding the climatic signal in the water stable isotope records from the NEEM shallow firn/ice cores in northwest Greenland |
title_sort |
understanding the climatic signal in the water stable isotope records from the neem shallow firn/ice cores in northwest greenland |
publisher |
American Geophysical Union (AGU) |
publishDate |
2011 |
url |
https://orbi.uliege.be/handle/2268/103392 https://doi.org/10.1029/2010JD014311 |
genre |
Baffin Bay Baffin Bay Baffin Greenland ice core Sea ice |
genre_facet |
Baffin Bay Baffin Bay Baffin Greenland ice core Sea ice |
op_source |
Journal of Geophysical Research. Atmospheres, 116, 20 (2011-03-22) |
op_relation |
http://www.agu.org/pubs/crossref/2011/2010JD014311.shtml urn:issn:2169-897X urn:issn:2169-8996 https://orbi.uliege.be/handle/2268/103392 info:hdl:2268/103392 doi:10.1029/2010JD014311 scopus-id:2-s2.0-79952998507 |
op_rights |
restricted access http://purl.org/coar/access_right/c_16ec info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1029/2010JD014311 |
container_title |
Journal of Geophysical Research |
container_volume |
116 |
container_issue |
D6 |
_version_ |
1796939206959824896 |