The influence of ocean convection patterns on high-latitude climate projections
The mean state and variability of deep convection in the ocean influence the North Atlantic climate. Using an ensemble experiment with a coupled atmosphere-ocean-sea ice model, it is shown that cooling and subdued warming areas can occur over the North Atlantic Ocean and adjacent landmasses under gl...
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Online Access: | http://hdl.handle.net/2078.1/39855 https://doi.org/10.1175/3174.1 |
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ftunistlouisbrus:oai:dial.uclouvain.be:boreal:39855 2024-05-12T08:04:34+00:00 The influence of ocean convection patterns on high-latitude climate projections Schaeffer, M Selten, FM Opsteegh, JD Goosse, Hugues UCL - SC/PHYS - Département de physique 2004 http://hdl.handle.net/2078.1/39855 https://doi.org/10.1175/3174.1 eng eng Amer Meteorological Soc boreal:39855 http://hdl.handle.net/2078.1/39855 doi:10.1175/3174.1 urn:ISSN:0894-8755 urn:EISSN:1520-0442 Journal of Climate, Vol. 17, no. 22, p. 4316-4329 (2004) info:eu-repo/semantics/article 2004 ftunistlouisbrus https://doi.org/10.1175/3174.1 2024-04-18T18:15:11Z The mean state and variability of deep convection in the ocean influence the North Atlantic climate. Using an ensemble experiment with a coupled atmosphere-ocean-sea ice model, it is shown that cooling and subdued warming areas can occur over the North Atlantic Ocean and adjacent landmasses under global warming. Different "present-day" convection patterns in the Greenland-Iceland-Norway (GIN) Sea result in different future surface-air temperature changes. At higher latitudes, the more effective positive sea ice feedback increases the likelihood of changes in convection causing a regional cooling that is larger than the warming brought about by the enhanced greenhouse effect. The modeled freshening of deep ocean layers in the North Atlantic in a time period preceding a reorganization of GIN Sea convection is consistent with recent observations. Low-frequency internal variability in the ocean model has relatively little impact on the response patterns. Article in Journal/Newspaper Greenland Iceland North Atlantic Sea ice DIAL@USL-B (Université Saint-Louis, Bruxelles) Greenland Norway Journal of Climate 17 22 4316 4329 |
institution |
Open Polar |
collection |
DIAL@USL-B (Université Saint-Louis, Bruxelles) |
op_collection_id |
ftunistlouisbrus |
language |
English |
description |
The mean state and variability of deep convection in the ocean influence the North Atlantic climate. Using an ensemble experiment with a coupled atmosphere-ocean-sea ice model, it is shown that cooling and subdued warming areas can occur over the North Atlantic Ocean and adjacent landmasses under global warming. Different "present-day" convection patterns in the Greenland-Iceland-Norway (GIN) Sea result in different future surface-air temperature changes. At higher latitudes, the more effective positive sea ice feedback increases the likelihood of changes in convection causing a regional cooling that is larger than the warming brought about by the enhanced greenhouse effect. The modeled freshening of deep ocean layers in the North Atlantic in a time period preceding a reorganization of GIN Sea convection is consistent with recent observations. Low-frequency internal variability in the ocean model has relatively little impact on the response patterns. |
author2 |
UCL - SC/PHYS - Département de physique |
format |
Article in Journal/Newspaper |
author |
Schaeffer, M Selten, FM Opsteegh, JD Goosse, Hugues |
spellingShingle |
Schaeffer, M Selten, FM Opsteegh, JD Goosse, Hugues The influence of ocean convection patterns on high-latitude climate projections |
author_facet |
Schaeffer, M Selten, FM Opsteegh, JD Goosse, Hugues |
author_sort |
Schaeffer, M |
title |
The influence of ocean convection patterns on high-latitude climate projections |
title_short |
The influence of ocean convection patterns on high-latitude climate projections |
title_full |
The influence of ocean convection patterns on high-latitude climate projections |
title_fullStr |
The influence of ocean convection patterns on high-latitude climate projections |
title_full_unstemmed |
The influence of ocean convection patterns on high-latitude climate projections |
title_sort |
influence of ocean convection patterns on high-latitude climate projections |
publisher |
Amer Meteorological Soc |
publishDate |
2004 |
url |
http://hdl.handle.net/2078.1/39855 https://doi.org/10.1175/3174.1 |
geographic |
Greenland Norway |
geographic_facet |
Greenland Norway |
genre |
Greenland Iceland North Atlantic Sea ice |
genre_facet |
Greenland Iceland North Atlantic Sea ice |
op_source |
Journal of Climate, Vol. 17, no. 22, p. 4316-4329 (2004) |
op_relation |
boreal:39855 http://hdl.handle.net/2078.1/39855 doi:10.1175/3174.1 urn:ISSN:0894-8755 urn:EISSN:1520-0442 |
op_doi |
https://doi.org/10.1175/3174.1 |
container_title |
Journal of Climate |
container_volume |
17 |
container_issue |
22 |
container_start_page |
4316 |
op_container_end_page |
4329 |
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1798846794827825152 |