On the non-linear response of the ocean thermohaline circulation to global deforestation
An experiment of 1750-yr duration has been performed with a three-dimensional coupled atmosphere-sea-ice-ocean-vegetation model to study the transient effect of global deforestation on climate. The response consists of two phases. First, the initial global cooling due to increased surface albedo (fo...
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American Geophysical Union
2003
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ftunivlouvain:oai:dial.uclouvain.be:boreal:129389 2024-05-19T07:27:45+00:00 On the non-linear response of the ocean thermohaline circulation to global deforestation Renssen, H. Goosse, Hugues Fichefet, Thierry UCL - SST/ELI/ELIC - Earth & Climate 2003 http://hdl.handle.net/2078.1/129389 eng eng American Geophysical Union boreal:129389 http://hdl.handle.net/2078.1/129389 urn:ISSN:0094-8276 urn:EISSN:1944-8007 info:eu-repo/semantics/restrictedAccess Geophysical Research Letters, Vol. 30, no.2, p. 1061 (2003) Climatology Marine applications Vegetation CISM : CECI 1443 info:eu-repo/semantics/article 2003 ftunivlouvain 2024-04-24T01:38:40Z An experiment of 1750-yr duration has been performed with a three-dimensional coupled atmosphere-sea-ice-ocean-vegetation model to study the transient effect of global deforestation on climate. The response consists of two phases. First, the initial global cooling due to increased surface albedo (forest replaced by grassland) is enhanced by a significant expansion of the sea-ice cover in both hemispheres, which increases the surface albedo further. Second, a non-linear response of the ocean thermohaline circulation results in a southward shift of the main deep-convection site and reduced northward heat transport in the Atlantic Ocean, leading to enhanced global cooling due to a further expansion of Arctic sea ice. Ultimately, surface temperatures over northwestern North America become sufficiently low to prevent the snow pack to melt in summer. Our results thus suggest that large-scale changes in forest cover may lead to non-linear changes in the climate system. Article in Journal/Newspaper albedo Arctic Sea ice DIAL@UCLouvain (Université catholique de Louvain) |
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Open Polar |
collection |
DIAL@UCLouvain (Université catholique de Louvain) |
op_collection_id |
ftunivlouvain |
language |
English |
topic |
Climatology Marine applications Vegetation CISM : CECI 1443 |
spellingShingle |
Climatology Marine applications Vegetation CISM : CECI 1443 Renssen, H. Goosse, Hugues Fichefet, Thierry On the non-linear response of the ocean thermohaline circulation to global deforestation |
topic_facet |
Climatology Marine applications Vegetation CISM : CECI 1443 |
description |
An experiment of 1750-yr duration has been performed with a three-dimensional coupled atmosphere-sea-ice-ocean-vegetation model to study the transient effect of global deforestation on climate. The response consists of two phases. First, the initial global cooling due to increased surface albedo (forest replaced by grassland) is enhanced by a significant expansion of the sea-ice cover in both hemispheres, which increases the surface albedo further. Second, a non-linear response of the ocean thermohaline circulation results in a southward shift of the main deep-convection site and reduced northward heat transport in the Atlantic Ocean, leading to enhanced global cooling due to a further expansion of Arctic sea ice. Ultimately, surface temperatures over northwestern North America become sufficiently low to prevent the snow pack to melt in summer. Our results thus suggest that large-scale changes in forest cover may lead to non-linear changes in the climate system. |
author2 |
UCL - SST/ELI/ELIC - Earth & Climate |
format |
Article in Journal/Newspaper |
author |
Renssen, H. Goosse, Hugues Fichefet, Thierry |
author_facet |
Renssen, H. Goosse, Hugues Fichefet, Thierry |
author_sort |
Renssen, H. |
title |
On the non-linear response of the ocean thermohaline circulation to global deforestation |
title_short |
On the non-linear response of the ocean thermohaline circulation to global deforestation |
title_full |
On the non-linear response of the ocean thermohaline circulation to global deforestation |
title_fullStr |
On the non-linear response of the ocean thermohaline circulation to global deforestation |
title_full_unstemmed |
On the non-linear response of the ocean thermohaline circulation to global deforestation |
title_sort |
on the non-linear response of the ocean thermohaline circulation to global deforestation |
publisher |
American Geophysical Union |
publishDate |
2003 |
url |
http://hdl.handle.net/2078.1/129389 |
genre |
albedo Arctic Sea ice |
genre_facet |
albedo Arctic Sea ice |
op_source |
Geophysical Research Letters, Vol. 30, no.2, p. 1061 (2003) |
op_relation |
boreal:129389 http://hdl.handle.net/2078.1/129389 urn:ISSN:0094-8276 urn:EISSN:1944-8007 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1799468898983084032 |