Coupled climate model simulation of Holocene cooling events: solar forcing triggers oceanic feedback
International audience The coupled global atmosphere-ocean-vegetation model ECBilt-CLIO-VECODE is used to perform transient simulations of the last 9000 years, forced by variations in orbital parameters, atmospheric greenhouse gas concentrations and total solar irradiance (TSI). The objective is to...
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ftinsu:oai:HAL:hal-00298128v1 2023-11-12T04:21:26+01:00 Coupled climate model simulation of Holocene cooling events: solar forcing triggers oceanic feedback Renssen, H. Goosse, H. Muscheler, R. Faculty of Earth and Life Sciences Amsterdam (FALW) Vrije Universiteit Amsterdam Amsterdam (VU) Institut d'Astronomie et de Géophysique Georges Lemaître (UCL-ASTR) Université Catholique de Louvain = Catholic University of Louvain (UCL) GSFC Climate and Radiation Laboratory NASA Goddard Space Flight Center (GSFC) 2006-05-24 https://hal.science/hal-00298128 https://hal.science/hal-00298128/document https://hal.science/hal-00298128/file/cpd-2-209-2006.pdf en eng HAL CCSD European Geosciences Union (EGU) hal-00298128 https://hal.science/hal-00298128 https://hal.science/hal-00298128/document https://hal.science/hal-00298128/file/cpd-2-209-2006.pdf info:eu-repo/semantics/OpenAccess ISSN: 1814-9340 EISSN: 1814-9359 Climate of the Past Discussions https://hal.science/hal-00298128 Climate of the Past Discussions, 2006, 2 (3), pp.209-232 [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2006 ftinsu 2023-10-25T16:28:11Z International audience The coupled global atmosphere-ocean-vegetation model ECBilt-CLIO-VECODE is used to perform transient simulations of the last 9000 years, forced by variations in orbital parameters, atmospheric greenhouse gas concentrations and total solar irradiance (TSI). The objective is to study the impact of decadal-centennial scale TSI variations on Holocene climate variability. The simulations show that negative TSI anomalies can trigger temporary reorganizations in the ocean circulation that produce centennial-scale cooling events that are consistent with proxy evidence for Holocene cold phases. In the model, reduced solar irradiance leads to a relocation of the site with deepwater formation in the Nordic Seas, causing an expansion of sea ice that produces additional cooling. The consequence is a characteristic climatic anomaly pattern, with cooling over most of the North Atlantic region and drying in the tropics. Our results suggest that the oceans play an important role in amplifying centennial-scale climate variability. Article in Journal/Newspaper Nordic Seas North Atlantic Sea ice Institut national des sciences de l'Univers: HAL-INSU |
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Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
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language |
English |
topic |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Renssen, H. Goosse, H. Muscheler, R. Coupled climate model simulation of Holocene cooling events: solar forcing triggers oceanic feedback |
topic_facet |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience The coupled global atmosphere-ocean-vegetation model ECBilt-CLIO-VECODE is used to perform transient simulations of the last 9000 years, forced by variations in orbital parameters, atmospheric greenhouse gas concentrations and total solar irradiance (TSI). The objective is to study the impact of decadal-centennial scale TSI variations on Holocene climate variability. The simulations show that negative TSI anomalies can trigger temporary reorganizations in the ocean circulation that produce centennial-scale cooling events that are consistent with proxy evidence for Holocene cold phases. In the model, reduced solar irradiance leads to a relocation of the site with deepwater formation in the Nordic Seas, causing an expansion of sea ice that produces additional cooling. The consequence is a characteristic climatic anomaly pattern, with cooling over most of the North Atlantic region and drying in the tropics. Our results suggest that the oceans play an important role in amplifying centennial-scale climate variability. |
author2 |
Faculty of Earth and Life Sciences Amsterdam (FALW) Vrije Universiteit Amsterdam Amsterdam (VU) Institut d'Astronomie et de Géophysique Georges Lemaître (UCL-ASTR) Université Catholique de Louvain = Catholic University of Louvain (UCL) GSFC Climate and Radiation Laboratory NASA Goddard Space Flight Center (GSFC) |
format |
Article in Journal/Newspaper |
author |
Renssen, H. Goosse, H. Muscheler, R. |
author_facet |
Renssen, H. Goosse, H. Muscheler, R. |
author_sort |
Renssen, H. |
title |
Coupled climate model simulation of Holocene cooling events: solar forcing triggers oceanic feedback |
title_short |
Coupled climate model simulation of Holocene cooling events: solar forcing triggers oceanic feedback |
title_full |
Coupled climate model simulation of Holocene cooling events: solar forcing triggers oceanic feedback |
title_fullStr |
Coupled climate model simulation of Holocene cooling events: solar forcing triggers oceanic feedback |
title_full_unstemmed |
Coupled climate model simulation of Holocene cooling events: solar forcing triggers oceanic feedback |
title_sort |
coupled climate model simulation of holocene cooling events: solar forcing triggers oceanic feedback |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://hal.science/hal-00298128 https://hal.science/hal-00298128/document https://hal.science/hal-00298128/file/cpd-2-209-2006.pdf |
genre |
Nordic Seas North Atlantic Sea ice |
genre_facet |
Nordic Seas North Atlantic Sea ice |
op_source |
ISSN: 1814-9340 EISSN: 1814-9359 Climate of the Past Discussions https://hal.science/hal-00298128 Climate of the Past Discussions, 2006, 2 (3), pp.209-232 |
op_relation |
hal-00298128 https://hal.science/hal-00298128 https://hal.science/hal-00298128/document https://hal.science/hal-00298128/file/cpd-2-209-2006.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782336851707691008 |