A global probabilistic study of the ocean heat content low-frequency variability: Atmospheric forcing versus oceanic chaos
A global 1/4 ∘ ocean/sea ice 50-member ensemble simulation is used to disentangle the low-frequency imprints of the atmospherically forced oceanic variability and of the chaotic intrinsic oceanic variability (IOV) on the large-scale (10 ∘ × 10 ∘) ocean heat content (OHC) between 1980 and 2010. The I...
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American Geophysical Union
2017
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Online Access: | https://oskar-bordeaux.fr/handle/20.500.12278/191583 https://hdl.handle.net/20.500.12278/191583 https://doi.org/10.1002/2017GL073026 |
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ftoskarbordeaux:oai:oskar-bordeaux.fr:20.500.12278/191583 2024-04-28T08:37:54+00:00 A global probabilistic study of the ocean heat content low-frequency variability: Atmospheric forcing versus oceanic chaos SÉRAZIN, Guillaume JAYMOND, Alexandre LEROUX, Stephanie PENDUFF, Thierry BESSIÈRES, Laurent LLOVEL, W. BARNIER, Bernard MOLINES, Jean-Marc TERRAY, Laurent 2017-06-16 https://oskar-bordeaux.fr/handle/20.500.12278/191583 https://hdl.handle.net/20.500.12278/191583 https://doi.org/10.1002/2017GL073026 en eng American Geophysical Union 0094-8276 https://oskar-bordeaux.fr/handle/20.500.12278/191583 doi:10.1002/2017GL073026 Planète et Univers [physics]/Océan Atmosphère Article de revue 2017 ftoskarbordeaux https://doi.org/20.500.12278/19158310.1002/2017GL073026 2024-04-08T14:49:51Z A global 1/4 ∘ ocean/sea ice 50-member ensemble simulation is used to disentangle the low-frequency imprints of the atmospherically forced oceanic variability and of the chaotic intrinsic oceanic variability (IOV) on the large-scale (10 ∘ × 10 ∘) ocean heat content (OHC) between 1980 and 2010. The IOV explains most of the interannual-to-decadal large-scale OHC variance over substantial fractions of the global ocean area that increase with depth: 9%, 22%, and 31% in the 0-700 m, 700-2000 m and 2000 m bottom layers, respectively. Such areas concern principally eddy-active regions, mostly found in the Southern Ocean and in western boundary current extensions, and also concern the subtropical gyres at intermediate and deep levels. The oceanic chaos may also induce random multidecadal fluctuations so that large-scale regional OHC trends computed on the 1980-2010 period cannot be unambiguously attributed to the atmospheric forcing in several oceanic basins at various depths. These results are likely to raise detection and attribution issues from real observations. Article in Journal/Newspaper Sea ice Southern Ocean OSKAR Bordeaux (Open Science Knowledge ARchive) Geophysical Research Letters 44 11 5580 5589 |
institution |
Open Polar |
collection |
OSKAR Bordeaux (Open Science Knowledge ARchive) |
op_collection_id |
ftoskarbordeaux |
language |
English |
topic |
Planète et Univers [physics]/Océan Atmosphère |
spellingShingle |
Planète et Univers [physics]/Océan Atmosphère SÉRAZIN, Guillaume JAYMOND, Alexandre LEROUX, Stephanie PENDUFF, Thierry BESSIÈRES, Laurent LLOVEL, W. BARNIER, Bernard MOLINES, Jean-Marc TERRAY, Laurent A global probabilistic study of the ocean heat content low-frequency variability: Atmospheric forcing versus oceanic chaos |
topic_facet |
Planète et Univers [physics]/Océan Atmosphère |
description |
A global 1/4 ∘ ocean/sea ice 50-member ensemble simulation is used to disentangle the low-frequency imprints of the atmospherically forced oceanic variability and of the chaotic intrinsic oceanic variability (IOV) on the large-scale (10 ∘ × 10 ∘) ocean heat content (OHC) between 1980 and 2010. The IOV explains most of the interannual-to-decadal large-scale OHC variance over substantial fractions of the global ocean area that increase with depth: 9%, 22%, and 31% in the 0-700 m, 700-2000 m and 2000 m bottom layers, respectively. Such areas concern principally eddy-active regions, mostly found in the Southern Ocean and in western boundary current extensions, and also concern the subtropical gyres at intermediate and deep levels. The oceanic chaos may also induce random multidecadal fluctuations so that large-scale regional OHC trends computed on the 1980-2010 period cannot be unambiguously attributed to the atmospheric forcing in several oceanic basins at various depths. These results are likely to raise detection and attribution issues from real observations. |
format |
Article in Journal/Newspaper |
author |
SÉRAZIN, Guillaume JAYMOND, Alexandre LEROUX, Stephanie PENDUFF, Thierry BESSIÈRES, Laurent LLOVEL, W. BARNIER, Bernard MOLINES, Jean-Marc TERRAY, Laurent |
author_facet |
SÉRAZIN, Guillaume JAYMOND, Alexandre LEROUX, Stephanie PENDUFF, Thierry BESSIÈRES, Laurent LLOVEL, W. BARNIER, Bernard MOLINES, Jean-Marc TERRAY, Laurent |
author_sort |
SÉRAZIN, Guillaume |
title |
A global probabilistic study of the ocean heat content low-frequency variability: Atmospheric forcing versus oceanic chaos |
title_short |
A global probabilistic study of the ocean heat content low-frequency variability: Atmospheric forcing versus oceanic chaos |
title_full |
A global probabilistic study of the ocean heat content low-frequency variability: Atmospheric forcing versus oceanic chaos |
title_fullStr |
A global probabilistic study of the ocean heat content low-frequency variability: Atmospheric forcing versus oceanic chaos |
title_full_unstemmed |
A global probabilistic study of the ocean heat content low-frequency variability: Atmospheric forcing versus oceanic chaos |
title_sort |
global probabilistic study of the ocean heat content low-frequency variability: atmospheric forcing versus oceanic chaos |
publisher |
American Geophysical Union |
publishDate |
2017 |
url |
https://oskar-bordeaux.fr/handle/20.500.12278/191583 https://hdl.handle.net/20.500.12278/191583 https://doi.org/10.1002/2017GL073026 |
genre |
Sea ice Southern Ocean |
genre_facet |
Sea ice Southern Ocean |
op_relation |
0094-8276 https://oskar-bordeaux.fr/handle/20.500.12278/191583 doi:10.1002/2017GL073026 |
op_doi |
https://doi.org/20.500.12278/19158310.1002/2017GL073026 |
container_title |
Geophysical Research Letters |
container_volume |
44 |
container_issue |
11 |
container_start_page |
5580 |
op_container_end_page |
5589 |
_version_ |
1797569149117923328 |