An energy balance model for paleoclimate transitions
A new energy balance model (EBM) is presented and is used to study paleoclimate transitions. While most previous EBMs only dealt with the globally averaged climate, this new EBM has three variants: Arctic, Antarctic and tropical climates. The EBM incorporates the greenhouse warming effects of both c...
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Online Access: | https://doi.org/10.5194/cp-15-493-2019 https://cp.copernicus.org/articles/15/493/2019/ |
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fttriple:oai:gotriple.eu:4izDQBdQRA6cYNJgo_g8n 2023-05-15T13:11:44+02:00 An energy balance model for paleoclimate transitions Dortmans, Brady Langford, William F. Willms, Allan R. 2019-04-09 https://doi.org/10.5194/cp-15-493-2019 https://cp.copernicus.org/articles/15/493/2019/ en eng Copernicus Publications doi:10.5194/cp-15-493-2019 10670/1.ui0akl 1814-9324 1814-9332 https://cp.copernicus.org/articles/15/493/2019/ undefined Geographica Helvetica - geography eISSN: 1814-9332 geo envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2019 fttriple https://doi.org/10.5194/cp-15-493-2019 2023-01-22T17:39:45Z A new energy balance model (EBM) is presented and is used to study paleoclimate transitions. While most previous EBMs only dealt with the globally averaged climate, this new EBM has three variants: Arctic, Antarctic and tropical climates. The EBM incorporates the greenhouse warming effects of both carbon dioxide and water vapour, and also includes ice–albedo feedback and evapotranspiration. The main conclusion to be inferred from this EBM is that the climate system may possess multiple equilibrium states, both warm and frozen, which coexist mathematically. While the actual climate can exist in only one of these states at any given time, the EBM suggests that climate can undergo transitions between the states via mathematical saddle-node bifurcations. This paper proposes that such bifurcations have actually occurred in Paleoclimate transitions. The EBM is applied to the study of the Pliocene paradox, the glaciation of Antarctica and the so-called warm, equable climate problem of both the mid-Cretaceous Period and the Eocene Epoch. In all cases, the EBM is in qualitative agreement with the geological record. Article in Journal/Newspaper albedo Antarc* Antarctic Antarctica Arctic Unknown Antarctic Arctic Climate of the Past 15 2 493 520 |
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geo envir Dortmans, Brady Langford, William F. Willms, Allan R. An energy balance model for paleoclimate transitions |
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geo envir |
description |
A new energy balance model (EBM) is presented and is used to study paleoclimate transitions. While most previous EBMs only dealt with the globally averaged climate, this new EBM has three variants: Arctic, Antarctic and tropical climates. The EBM incorporates the greenhouse warming effects of both carbon dioxide and water vapour, and also includes ice–albedo feedback and evapotranspiration. The main conclusion to be inferred from this EBM is that the climate system may possess multiple equilibrium states, both warm and frozen, which coexist mathematically. While the actual climate can exist in only one of these states at any given time, the EBM suggests that climate can undergo transitions between the states via mathematical saddle-node bifurcations. This paper proposes that such bifurcations have actually occurred in Paleoclimate transitions. The EBM is applied to the study of the Pliocene paradox, the glaciation of Antarctica and the so-called warm, equable climate problem of both the mid-Cretaceous Period and the Eocene Epoch. In all cases, the EBM is in qualitative agreement with the geological record. |
format |
Article in Journal/Newspaper |
author |
Dortmans, Brady Langford, William F. Willms, Allan R. |
author_facet |
Dortmans, Brady Langford, William F. Willms, Allan R. |
author_sort |
Dortmans, Brady |
title |
An energy balance model for paleoclimate transitions |
title_short |
An energy balance model for paleoclimate transitions |
title_full |
An energy balance model for paleoclimate transitions |
title_fullStr |
An energy balance model for paleoclimate transitions |
title_full_unstemmed |
An energy balance model for paleoclimate transitions |
title_sort |
energy balance model for paleoclimate transitions |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/cp-15-493-2019 https://cp.copernicus.org/articles/15/493/2019/ |
geographic |
Antarctic Arctic |
geographic_facet |
Antarctic Arctic |
genre |
albedo Antarc* Antarctic Antarctica Arctic |
genre_facet |
albedo Antarc* Antarctic Antarctica Arctic |
op_source |
Geographica Helvetica - geography eISSN: 1814-9332 |
op_relation |
doi:10.5194/cp-15-493-2019 10670/1.ui0akl 1814-9324 1814-9332 https://cp.copernicus.org/articles/15/493/2019/ |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/cp-15-493-2019 |
container_title |
Climate of the Past |
container_volume |
15 |
container_issue |
2 |
container_start_page |
493 |
op_container_end_page |
520 |
_version_ |
1766248715656364032 |