How does ocean ventilation change under global warming?
International audience Since the upper ocean takes up much of the heat added to the earth system by anthropogenic global warming, one would expect that global warming would lead to an increase in stratification and a decrease in the ventilation of the ocean interior. However, multiple simulations in...
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ftunivnantes:oai:HAL:hal-00298310v1 2023-05-15T15:03:04+02:00 How does ocean ventilation change under global warming? Gnanadesikan, A. Russell, J. L. Zeng, Fanrong NOAA Geophysical Fluid Dynamics Laboratory (GFDL) National Oceanic and Atmospheric Administration (NOAA) Department of Geosciences University of Arizona University of Arizona RSIS 2007-02-06 https://hal.archives-ouvertes.fr/hal-00298310 https://hal.archives-ouvertes.fr/hal-00298310/document https://hal.archives-ouvertes.fr/hal-00298310/file/os-3-43-2007.pdf en eng HAL CCSD European Geosciences Union hal-00298310 https://hal.archives-ouvertes.fr/hal-00298310 https://hal.archives-ouvertes.fr/hal-00298310/document https://hal.archives-ouvertes.fr/hal-00298310/file/os-3-43-2007.pdf info:eu-repo/semantics/OpenAccess ISSN: 1812-0784 EISSN: 1812-0792 Ocean Science https://hal.archives-ouvertes.fr/hal-00298310 Ocean Science, European Geosciences Union, 2007, 3 (1), pp.43-53 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2007 ftunivnantes 2022-08-10T02:47:31Z International audience Since the upper ocean takes up much of the heat added to the earth system by anthropogenic global warming, one would expect that global warming would lead to an increase in stratification and a decrease in the ventilation of the ocean interior. However, multiple simulations in global coupled climate models using an ideal age tracer which is set to zero in the mixed layer and ages at 1 yr/yr outside this layer show that the intermediate depths in the low latitudes, Northwest Atlantic, and parts of the Arctic Ocean become younger under global warming. This paper reconciles these apparently contradictory trends, showing that the decreases result from changes in the relative contributions of old deep waters and younger surface waters. Implications for the tropical oxygen minimum zones, which play a critical role in global biogeochemical cycling are considered in detail. Article in Journal/Newspaper Arctic Arctic Ocean Global warming Northwest Atlantic Université de Nantes: HAL-UNIV-NANTES Arctic Arctic Ocean |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Gnanadesikan, A. Russell, J. L. Zeng, Fanrong How does ocean ventilation change under global warming? |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Since the upper ocean takes up much of the heat added to the earth system by anthropogenic global warming, one would expect that global warming would lead to an increase in stratification and a decrease in the ventilation of the ocean interior. However, multiple simulations in global coupled climate models using an ideal age tracer which is set to zero in the mixed layer and ages at 1 yr/yr outside this layer show that the intermediate depths in the low latitudes, Northwest Atlantic, and parts of the Arctic Ocean become younger under global warming. This paper reconciles these apparently contradictory trends, showing that the decreases result from changes in the relative contributions of old deep waters and younger surface waters. Implications for the tropical oxygen minimum zones, which play a critical role in global biogeochemical cycling are considered in detail. |
author2 |
NOAA Geophysical Fluid Dynamics Laboratory (GFDL) National Oceanic and Atmospheric Administration (NOAA) Department of Geosciences University of Arizona University of Arizona RSIS |
format |
Article in Journal/Newspaper |
author |
Gnanadesikan, A. Russell, J. L. Zeng, Fanrong |
author_facet |
Gnanadesikan, A. Russell, J. L. Zeng, Fanrong |
author_sort |
Gnanadesikan, A. |
title |
How does ocean ventilation change under global warming? |
title_short |
How does ocean ventilation change under global warming? |
title_full |
How does ocean ventilation change under global warming? |
title_fullStr |
How does ocean ventilation change under global warming? |
title_full_unstemmed |
How does ocean ventilation change under global warming? |
title_sort |
how does ocean ventilation change under global warming? |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.archives-ouvertes.fr/hal-00298310 https://hal.archives-ouvertes.fr/hal-00298310/document https://hal.archives-ouvertes.fr/hal-00298310/file/os-3-43-2007.pdf |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Global warming Northwest Atlantic |
genre_facet |
Arctic Arctic Ocean Global warming Northwest Atlantic |
op_source |
ISSN: 1812-0784 EISSN: 1812-0792 Ocean Science https://hal.archives-ouvertes.fr/hal-00298310 Ocean Science, European Geosciences Union, 2007, 3 (1), pp.43-53 |
op_relation |
hal-00298310 https://hal.archives-ouvertes.fr/hal-00298310 https://hal.archives-ouvertes.fr/hal-00298310/document https://hal.archives-ouvertes.fr/hal-00298310/file/os-3-43-2007.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1766334982079381504 |