Climate evolution during the Holocene: a study with an Earth system model of intermediate complexity
An Earth system model of intermediate complexity, MoBidiC, has been used to simulate the transient variations in continental temperature, sea-surface temperature (SST), thermohaline circulation (THC) and sea-ice cover over the last 9000 years (9 kyr). Experiments were designed to determine (a) the d...
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ftunistlouisbrus:oai:dial.uclouvain.be:boreal:41914 2024-05-12T08:10:56+00:00 Climate evolution during the Holocene: a study with an Earth system model of intermediate complexity Crucifix, Michel Loutre, Marie-France Tulkens, Paul M. Fichefet, Thierry Berger, André UCL - SC/PHYS - Département de physique UCL - MD/FARM - Ecole de pharmacie UCL - SST/ELI/ELIC - Earth & Climate 2002 http://hdl.handle.net/2078.1/41914 https://doi.org/10.1007/s00382-001-0208-6 eng eng Springer-verlag boreal:41914 http://hdl.handle.net/2078.1/41914 doi:10.1007/s00382-001-0208-6 urn:ISSN:0930-7575 urn:EISSN:1432-0894 info:eu-repo/semantics/restrictedAccess Climate Dynamics : observational, theoretical and computational research on the climate system, Vol. 19, no. 1, p. 43-60 (2002) info:eu-repo/semantics/article 2002 ftunistlouisbrus https://doi.org/10.1007/s00382-001-0208-6 2024-04-18T18:14:34Z An Earth system model of intermediate complexity, MoBidiC, has been used to simulate the transient variations in continental temperature, sea-surface temperature (SST), thermohaline circulation (THC) and sea-ice cover over the last 9000 years (9 kyr). Experiments were designed to determine (a) the deviation of the climatic system with respect to equilibrium over the last 9 kyr, (b) the individual contributions of oceans and vegetation to climatic changes, as well as the potential synergies between these components, and (c) the relative importance of precession, obliquity and CO2 concentration changes during this period. Results show a monotonous cooling trend in the northern high latitudes between 9 kyr BP and the present day, both over the oceans and the continents. North of 60degreesN, this cooling is noticed throughout the year, but the largest variations appear in spring and summer (up to 6 degreesC over continents). Along with this cooling, the model exhibits a southward shift of the northern treeline b about 600 km. Most of this shift takes place between 4 and I kyr BP. During this period, reorganisations of the boreal forest introduce a lag of about 200 years in the system with respect to a state in equilibrium with the external forcing. Sensitivity experiments illustrate the strong impact of this vegetation shift both on the oceans and the continents, especially in spring and early summer. However. the model exhibits a weak synergy between vegetation and ocean throughout the Holocene. Finally, a sensitivity study to the forcing components shows the dominant role of the astronomical forcing with respect to CO2, as well as the non-linear behaviour of climate in response to obliquity and precession. Article in Journal/Newspaper Sea ice DIAL@USL-B (Université Saint-Louis, Bruxelles) Climate Dynamics 19 1 43 60 |
institution |
Open Polar |
collection |
DIAL@USL-B (Université Saint-Louis, Bruxelles) |
op_collection_id |
ftunistlouisbrus |
language |
English |
description |
An Earth system model of intermediate complexity, MoBidiC, has been used to simulate the transient variations in continental temperature, sea-surface temperature (SST), thermohaline circulation (THC) and sea-ice cover over the last 9000 years (9 kyr). Experiments were designed to determine (a) the deviation of the climatic system with respect to equilibrium over the last 9 kyr, (b) the individual contributions of oceans and vegetation to climatic changes, as well as the potential synergies between these components, and (c) the relative importance of precession, obliquity and CO2 concentration changes during this period. Results show a monotonous cooling trend in the northern high latitudes between 9 kyr BP and the present day, both over the oceans and the continents. North of 60degreesN, this cooling is noticed throughout the year, but the largest variations appear in spring and summer (up to 6 degreesC over continents). Along with this cooling, the model exhibits a southward shift of the northern treeline b about 600 km. Most of this shift takes place between 4 and I kyr BP. During this period, reorganisations of the boreal forest introduce a lag of about 200 years in the system with respect to a state in equilibrium with the external forcing. Sensitivity experiments illustrate the strong impact of this vegetation shift both on the oceans and the continents, especially in spring and early summer. However. the model exhibits a weak synergy between vegetation and ocean throughout the Holocene. Finally, a sensitivity study to the forcing components shows the dominant role of the astronomical forcing with respect to CO2, as well as the non-linear behaviour of climate in response to obliquity and precession. |
author2 |
UCL - SC/PHYS - Département de physique UCL - MD/FARM - Ecole de pharmacie UCL - SST/ELI/ELIC - Earth & Climate |
format |
Article in Journal/Newspaper |
author |
Crucifix, Michel Loutre, Marie-France Tulkens, Paul M. Fichefet, Thierry Berger, André |
spellingShingle |
Crucifix, Michel Loutre, Marie-France Tulkens, Paul M. Fichefet, Thierry Berger, André Climate evolution during the Holocene: a study with an Earth system model of intermediate complexity |
author_facet |
Crucifix, Michel Loutre, Marie-France Tulkens, Paul M. Fichefet, Thierry Berger, André |
author_sort |
Crucifix, Michel |
title |
Climate evolution during the Holocene: a study with an Earth system model of intermediate complexity |
title_short |
Climate evolution during the Holocene: a study with an Earth system model of intermediate complexity |
title_full |
Climate evolution during the Holocene: a study with an Earth system model of intermediate complexity |
title_fullStr |
Climate evolution during the Holocene: a study with an Earth system model of intermediate complexity |
title_full_unstemmed |
Climate evolution during the Holocene: a study with an Earth system model of intermediate complexity |
title_sort |
climate evolution during the holocene: a study with an earth system model of intermediate complexity |
publisher |
Springer-verlag |
publishDate |
2002 |
url |
http://hdl.handle.net/2078.1/41914 https://doi.org/10.1007/s00382-001-0208-6 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Climate Dynamics : observational, theoretical and computational research on the climate system, Vol. 19, no. 1, p. 43-60 (2002) |
op_relation |
boreal:41914 http://hdl.handle.net/2078.1/41914 doi:10.1007/s00382-001-0208-6 urn:ISSN:0930-7575 urn:EISSN:1432-0894 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00382-001-0208-6 |
container_title |
Climate Dynamics |
container_volume |
19 |
container_issue |
1 |
container_start_page |
43 |
op_container_end_page |
60 |
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1798854493877567488 |