Glacial ice and atmospheric forcing on the Mertz Glacier Polynya over the past 250 years
The Mertz Glacier Polynya off George V Land, East Antarctica, is a source of Adélie Land Bottom Water, which contributes up to B25% of the Antarctic Bottom Water. This major polynya is closely linked to the presence of the Mertz Glacier Tongue that traps pack ice upstream. In 2010, the Mertz Glacier...
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ftoskarbordeaux:oai:oskar-bordeaux.fr:20.500.12278/199775 2024-06-16T07:33:58+00:00 Glacial ice and atmospheric forcing on the Mertz Glacier Polynya over the past 250 years CAMPAGNE, Philippine CROSTA, Xavier HOUSSAIS, Marie-Noëlle SWINGEDOUW, Didier SCHMIDT, Sabine MARTIN, Antoine DEVRED, E. CAPO, Sylvain MARIEU, Vincent MASSÉ, Guillaume CLOSSET, Ivia 2015-03-24 https://oskar-bordeaux.fr/handle/20.500.12278/199775 https://hdl.handle.net/20.500.12278/199775 https://doi.org/10.1038/ncomms7642 EN eng 2041-1723 https://oskar-bordeaux.fr/handle/20.500.12278/199775 doi:10.1038/ncomms7642 open Pas de Licence CC Planète et Univers [physics]/Océan Atmosphère Planète et Univers [physics]/Sciences de la Terre/Océanographie Planète et Univers [physics]/Sciences de la Terre/Climatologie Article de revue 2015 ftoskarbordeaux https://doi.org/20.500.12278/19977510.1038/ncomms7642 2024-05-19T23:40:39Z The Mertz Glacier Polynya off George V Land, East Antarctica, is a source of Adélie Land Bottom Water, which contributes up to B25% of the Antarctic Bottom Water. This major polynya is closely linked to the presence of the Mertz Glacier Tongue that traps pack ice upstream. In 2010, the Mertz Glacier calved a massive iceberg, deeply impacting local sea ice conditions and dense shelf water formation. Here we provide the first detailed 250-year long reconstruction of local sea ice and bottom water conditions. Spectral analysis of the data sets reveals large and abrupt changes in sea surface and bottom water conditions with a B70-year cyclicity, associated with the Mertz Glacier Tongue calving and regrowth dynamics. Geological data and atmospheric reanalysis, however, suggest that sea ice conditions in the polynya were also very sensitive to changes in surface winds in relation to the recent intensification of the Southern Annular Mode. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica George V Land Iceberg* Mertz Glacier Sea ice OSKAR Bordeaux (Open Science Knowledge ARchive) Antarctic The Antarctic East Antarctica Mertz Glacier ENVELOPE(144.500,144.500,-67.667,-67.667) George V Land ENVELOPE(148.000,148.000,-68.500,-68.500) Mertz Glacier Tongue ENVELOPE(145.500,145.500,-67.167,-67.167) Nature Communications 6 1 |
institution |
Open Polar |
collection |
OSKAR Bordeaux (Open Science Knowledge ARchive) |
op_collection_id |
ftoskarbordeaux |
language |
English |
topic |
Planète et Univers [physics]/Océan Atmosphère Planète et Univers [physics]/Sciences de la Terre/Océanographie Planète et Univers [physics]/Sciences de la Terre/Climatologie |
spellingShingle |
Planète et Univers [physics]/Océan Atmosphère Planète et Univers [physics]/Sciences de la Terre/Océanographie Planète et Univers [physics]/Sciences de la Terre/Climatologie CAMPAGNE, Philippine CROSTA, Xavier HOUSSAIS, Marie-Noëlle SWINGEDOUW, Didier SCHMIDT, Sabine MARTIN, Antoine DEVRED, E. CAPO, Sylvain MARIEU, Vincent MASSÉ, Guillaume CLOSSET, Ivia Glacial ice and atmospheric forcing on the Mertz Glacier Polynya over the past 250 years |
topic_facet |
Planète et Univers [physics]/Océan Atmosphère Planète et Univers [physics]/Sciences de la Terre/Océanographie Planète et Univers [physics]/Sciences de la Terre/Climatologie |
description |
The Mertz Glacier Polynya off George V Land, East Antarctica, is a source of Adélie Land Bottom Water, which contributes up to B25% of the Antarctic Bottom Water. This major polynya is closely linked to the presence of the Mertz Glacier Tongue that traps pack ice upstream. In 2010, the Mertz Glacier calved a massive iceberg, deeply impacting local sea ice conditions and dense shelf water formation. Here we provide the first detailed 250-year long reconstruction of local sea ice and bottom water conditions. Spectral analysis of the data sets reveals large and abrupt changes in sea surface and bottom water conditions with a B70-year cyclicity, associated with the Mertz Glacier Tongue calving and regrowth dynamics. Geological data and atmospheric reanalysis, however, suggest that sea ice conditions in the polynya were also very sensitive to changes in surface winds in relation to the recent intensification of the Southern Annular Mode. |
format |
Article in Journal/Newspaper |
author |
CAMPAGNE, Philippine CROSTA, Xavier HOUSSAIS, Marie-Noëlle SWINGEDOUW, Didier SCHMIDT, Sabine MARTIN, Antoine DEVRED, E. CAPO, Sylvain MARIEU, Vincent MASSÉ, Guillaume CLOSSET, Ivia |
author_facet |
CAMPAGNE, Philippine CROSTA, Xavier HOUSSAIS, Marie-Noëlle SWINGEDOUW, Didier SCHMIDT, Sabine MARTIN, Antoine DEVRED, E. CAPO, Sylvain MARIEU, Vincent MASSÉ, Guillaume CLOSSET, Ivia |
author_sort |
CAMPAGNE, Philippine |
title |
Glacial ice and atmospheric forcing on the Mertz Glacier Polynya over the past 250 years |
title_short |
Glacial ice and atmospheric forcing on the Mertz Glacier Polynya over the past 250 years |
title_full |
Glacial ice and atmospheric forcing on the Mertz Glacier Polynya over the past 250 years |
title_fullStr |
Glacial ice and atmospheric forcing on the Mertz Glacier Polynya over the past 250 years |
title_full_unstemmed |
Glacial ice and atmospheric forcing on the Mertz Glacier Polynya over the past 250 years |
title_sort |
glacial ice and atmospheric forcing on the mertz glacier polynya over the past 250 years |
publishDate |
2015 |
url |
https://oskar-bordeaux.fr/handle/20.500.12278/199775 https://hdl.handle.net/20.500.12278/199775 https://doi.org/10.1038/ncomms7642 |
long_lat |
ENVELOPE(144.500,144.500,-67.667,-67.667) ENVELOPE(148.000,148.000,-68.500,-68.500) ENVELOPE(145.500,145.500,-67.167,-67.167) |
geographic |
Antarctic The Antarctic East Antarctica Mertz Glacier George V Land Mertz Glacier Tongue |
geographic_facet |
Antarctic The Antarctic East Antarctica Mertz Glacier George V Land Mertz Glacier Tongue |
genre |
Antarc* Antarctic Antarctica East Antarctica George V Land Iceberg* Mertz Glacier Sea ice |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica George V Land Iceberg* Mertz Glacier Sea ice |
op_relation |
2041-1723 https://oskar-bordeaux.fr/handle/20.500.12278/199775 doi:10.1038/ncomms7642 |
op_rights |
open Pas de Licence CC |
op_doi |
https://doi.org/20.500.12278/19977510.1038/ncomms7642 |
container_title |
Nature Communications |
container_volume |
6 |
container_issue |
1 |
_version_ |
1802006913005649920 |