Tropical vegetation response to Heinrich Event 1 as simulated with the UVic ESCM and CCSM3
We investigated changes in tropical climate and vegetation cover associated with abrupt climate change during Heinrich Event 1 (HE1, ca. 17.5 ka BP) using two different global climate models: the University of Victoria Earth System-Climate Model (UVic ESCM) and the Community Climate System Model ver...
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ftdoajarticles:oai:doaj.org/article:88d6b23204724fb5b04b2c5d3405a305 2023-05-15T17:31:35+02:00 Tropical vegetation response to Heinrich Event 1 as simulated with the UVic ESCM and CCSM3 D. Handiani A. Paul M. Prange U. Merkel L. Dupont X. Zhang 2013-07-01T00:00:00Z https://doi.org/10.5194/cp-9-1683-2013 https://doaj.org/article/88d6b23204724fb5b04b2c5d3405a305 EN eng Copernicus Publications http://www.clim-past.net/9/1683/2013/cp-9-1683-2013.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-9-1683-2013 1814-9324 1814-9332 https://doaj.org/article/88d6b23204724fb5b04b2c5d3405a305 Climate of the Past, Vol 9, Iss 4, Pp 1683-1696 (2013) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2013 ftdoajarticles https://doi.org/10.5194/cp-9-1683-2013 2022-12-31T11:21:32Z We investigated changes in tropical climate and vegetation cover associated with abrupt climate change during Heinrich Event 1 (HE1, ca. 17.5 ka BP) using two different global climate models: the University of Victoria Earth System-Climate Model (UVic ESCM) and the Community Climate System Model version 3 (CCSM3). Tropical South American and African pollen records suggest that the cooling of the North Atlantic Ocean during HE1 influenced the tropics through a southward shift of the rain belt. In this study, we simulated the HE1 by applying a freshwater perturbation to the North Atlantic Ocean. The resulting slowdown of the Atlantic Meridional Overturning Circulation was followed by a temperature seesaw between the Northern and Southern Hemispheres, as well as a southward shift of the tropical rain belt. The shift and the response pattern of the tropical vegetation around the Atlantic Ocean were more pronounced in the CCSM3 than in the UVic ESCM simulation. For tropical South America, opposite changes in tree and grass cover were modeled around 10° S in the CCSM3 but not in the UVic ESCM. In tropical Africa, the grass cover increased and the tree cover decreased around 15° N in the UVic ESCM and around 10° N in the CCSM3. In the CCSM3 model, the tree and grass cover in tropical Southeast Asia responded to the abrupt climate change during the HE1, which could not be found in the UVic ESCM. The biome distributions derived from both models corroborate findings from pollen records in southwestern and equatorial western Africa as well as northeastern Brazil. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Climate of the Past 9 4 1683 1696 |
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Directory of Open Access Journals: DOAJ Articles |
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topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
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Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 D. Handiani A. Paul M. Prange U. Merkel L. Dupont X. Zhang Tropical vegetation response to Heinrich Event 1 as simulated with the UVic ESCM and CCSM3 |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
description |
We investigated changes in tropical climate and vegetation cover associated with abrupt climate change during Heinrich Event 1 (HE1, ca. 17.5 ka BP) using two different global climate models: the University of Victoria Earth System-Climate Model (UVic ESCM) and the Community Climate System Model version 3 (CCSM3). Tropical South American and African pollen records suggest that the cooling of the North Atlantic Ocean during HE1 influenced the tropics through a southward shift of the rain belt. In this study, we simulated the HE1 by applying a freshwater perturbation to the North Atlantic Ocean. The resulting slowdown of the Atlantic Meridional Overturning Circulation was followed by a temperature seesaw between the Northern and Southern Hemispheres, as well as a southward shift of the tropical rain belt. The shift and the response pattern of the tropical vegetation around the Atlantic Ocean were more pronounced in the CCSM3 than in the UVic ESCM simulation. For tropical South America, opposite changes in tree and grass cover were modeled around 10° S in the CCSM3 but not in the UVic ESCM. In tropical Africa, the grass cover increased and the tree cover decreased around 15° N in the UVic ESCM and around 10° N in the CCSM3. In the CCSM3 model, the tree and grass cover in tropical Southeast Asia responded to the abrupt climate change during the HE1, which could not be found in the UVic ESCM. The biome distributions derived from both models corroborate findings from pollen records in southwestern and equatorial western Africa as well as northeastern Brazil. |
format |
Article in Journal/Newspaper |
author |
D. Handiani A. Paul M. Prange U. Merkel L. Dupont X. Zhang |
author_facet |
D. Handiani A. Paul M. Prange U. Merkel L. Dupont X. Zhang |
author_sort |
D. Handiani |
title |
Tropical vegetation response to Heinrich Event 1 as simulated with the UVic ESCM and CCSM3 |
title_short |
Tropical vegetation response to Heinrich Event 1 as simulated with the UVic ESCM and CCSM3 |
title_full |
Tropical vegetation response to Heinrich Event 1 as simulated with the UVic ESCM and CCSM3 |
title_fullStr |
Tropical vegetation response to Heinrich Event 1 as simulated with the UVic ESCM and CCSM3 |
title_full_unstemmed |
Tropical vegetation response to Heinrich Event 1 as simulated with the UVic ESCM and CCSM3 |
title_sort |
tropical vegetation response to heinrich event 1 as simulated with the uvic escm and ccsm3 |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/cp-9-1683-2013 https://doaj.org/article/88d6b23204724fb5b04b2c5d3405a305 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Climate of the Past, Vol 9, Iss 4, Pp 1683-1696 (2013) |
op_relation |
http://www.clim-past.net/9/1683/2013/cp-9-1683-2013.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-9-1683-2013 1814-9324 1814-9332 https://doaj.org/article/88d6b23204724fb5b04b2c5d3405a305 |
op_doi |
https://doi.org/10.5194/cp-9-1683-2013 |
container_title |
Climate of the Past |
container_volume |
9 |
container_issue |
4 |
container_start_page |
1683 |
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1696 |
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