Physical Interactions Within a Coupled Climate Model Over the Last Glacial Interglacial Cycle

A two-dimensional (2-D) seasonal model has been developed for stimulating the transient response of the climate system to the astronomical forcing. The atmosphere is represented by a zonally averaged quasi-geostrophic model which includes accurate treatment of radiative transfer. The atmospheric mod...

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Published in:Transactions of the Royal Society of Edinburgh: Earth Sciences
Main Authors: Berger, André, Fichefet, Thierry, Gallee, H., Marsiat, I., Tricot, C., van Ypersele de Strihou, Jean-Pascal, Symposium on the late Cenozoic ice age
Other Authors: UCL - SC/PHYS - Département de physique, UCL - SST/ELI/ELIC - Earth & Climate
Format: Conference Object
Language:English
Published: Royal Soc Edinburgh 1990
Subjects:
Online Access:http://hdl.handle.net/2078.1/63723
https://doi.org/10.1017/S026359330002085X
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spelling ftunistlouisbrus:oai:dial.uclouvain.be:boreal:63723 2024-05-12T08:04:27+00:00 Physical Interactions Within a Coupled Climate Model Over the Last Glacial Interglacial Cycle Berger, André Fichefet, Thierry Gallee, H. Marsiat, I. Tricot, C. van Ypersele de Strihou, Jean-Pascal Symposium on the late Cenozoic ice age UCL - SC/PHYS - Département de physique UCL - SST/ELI/ELIC - Earth & Climate 1990 http://hdl.handle.net/2078.1/63723 https://doi.org/10.1017/S026359330002085X eng eng Royal Soc Edinburgh boreal:63723 http://hdl.handle.net/2078.1/63723 doi:10.1017/S026359330002085X urn:ISSN:0263-5933 Royal Society of Edinburgh. Transactions. Earth Sciences, Vol. 81, p. 357-369 (1990) Astronomical Theory Milankovitch Theory Paleoclimates Quaternary Climates Climatic Variations Modeling Climatic Variations Last Interglacial Glacial Cycle info:eu-repo/semantics/conferenceObject 1990 ftunistlouisbrus https://doi.org/10.1017/S026359330002085X 2024-04-18T18:11:54Z A two-dimensional (2-D) seasonal model has been developed for stimulating the transient response of the climate system to the astronomical forcing. The atmosphere is represented by a zonally averaged quasi-geostrophic model which includes accurate treatment of radiative transfer. The atmospheric model interacts with the other components of the climate system (ocean, sea-ice and land surface covered or not by snow and ice) through vertical fluxes of momentum, heat and humidity. The model explicitly incorporates surface energy balances and has snow and sea-ice mass budgets. The vertical profile of the upper-ocean temperature is computed by an interactive mixed-layer model which takes into account the meridional turbulent diffusion of heat. This model is asynchronously coupled to a model which simulates the dynamics of the Greenland, the northern American and the Eurasian ice sheets. Over the last glacial-interglacial cycle, the coupled model simulates climatic changes which are in general agreement with the low frequency part of the deep-sea, ice and sea-level records. However, after 6000 yBP, the remaining ice volume of the Greenland and northern American ice sheets is overestimated in the simulation. The simulated climate is sensitive to the initial size of the Greenland ice sheet, to the ice-albedo positive feedback, to the precipitation-altitude negative feedback over the ice sheets, to the albedo of the aging snow and to the insolation increase, particularly at the southern edge of the ice sheets, which is important for their collapse or surge. Conference Object Greenland Ice Sheet Sea ice DIAL@USL-B (Université Saint-Louis, Bruxelles) Greenland Transactions of the Royal Society of Edinburgh: Earth Sciences 81 4 357 369
institution Open Polar
collection DIAL@USL-B (Université Saint-Louis, Bruxelles)
op_collection_id ftunistlouisbrus
language English
topic Astronomical Theory
Milankovitch Theory
Paleoclimates
Quaternary Climates
Climatic Variations
Modeling Climatic Variations
Last Interglacial Glacial Cycle
spellingShingle Astronomical Theory
Milankovitch Theory
Paleoclimates
Quaternary Climates
Climatic Variations
Modeling Climatic Variations
Last Interglacial Glacial Cycle
Berger, André
Fichefet, Thierry
Gallee, H.
Marsiat, I.
Tricot, C.
van Ypersele de Strihou, Jean-Pascal
Symposium on the late Cenozoic ice age
Physical Interactions Within a Coupled Climate Model Over the Last Glacial Interglacial Cycle
topic_facet Astronomical Theory
Milankovitch Theory
Paleoclimates
Quaternary Climates
Climatic Variations
Modeling Climatic Variations
Last Interglacial Glacial Cycle
description A two-dimensional (2-D) seasonal model has been developed for stimulating the transient response of the climate system to the astronomical forcing. The atmosphere is represented by a zonally averaged quasi-geostrophic model which includes accurate treatment of radiative transfer. The atmospheric model interacts with the other components of the climate system (ocean, sea-ice and land surface covered or not by snow and ice) through vertical fluxes of momentum, heat and humidity. The model explicitly incorporates surface energy balances and has snow and sea-ice mass budgets. The vertical profile of the upper-ocean temperature is computed by an interactive mixed-layer model which takes into account the meridional turbulent diffusion of heat. This model is asynchronously coupled to a model which simulates the dynamics of the Greenland, the northern American and the Eurasian ice sheets. Over the last glacial-interglacial cycle, the coupled model simulates climatic changes which are in general agreement with the low frequency part of the deep-sea, ice and sea-level records. However, after 6000 yBP, the remaining ice volume of the Greenland and northern American ice sheets is overestimated in the simulation. The simulated climate is sensitive to the initial size of the Greenland ice sheet, to the ice-albedo positive feedback, to the precipitation-altitude negative feedback over the ice sheets, to the albedo of the aging snow and to the insolation increase, particularly at the southern edge of the ice sheets, which is important for their collapse or surge.
author2 UCL - SC/PHYS - Département de physique
UCL - SST/ELI/ELIC - Earth & Climate
format Conference Object
author Berger, André
Fichefet, Thierry
Gallee, H.
Marsiat, I.
Tricot, C.
van Ypersele de Strihou, Jean-Pascal
Symposium on the late Cenozoic ice age
author_facet Berger, André
Fichefet, Thierry
Gallee, H.
Marsiat, I.
Tricot, C.
van Ypersele de Strihou, Jean-Pascal
Symposium on the late Cenozoic ice age
author_sort Berger, André
title Physical Interactions Within a Coupled Climate Model Over the Last Glacial Interglacial Cycle
title_short Physical Interactions Within a Coupled Climate Model Over the Last Glacial Interglacial Cycle
title_full Physical Interactions Within a Coupled Climate Model Over the Last Glacial Interglacial Cycle
title_fullStr Physical Interactions Within a Coupled Climate Model Over the Last Glacial Interglacial Cycle
title_full_unstemmed Physical Interactions Within a Coupled Climate Model Over the Last Glacial Interglacial Cycle
title_sort physical interactions within a coupled climate model over the last glacial interglacial cycle
publisher Royal Soc Edinburgh
publishDate 1990
url http://hdl.handle.net/2078.1/63723
https://doi.org/10.1017/S026359330002085X
geographic Greenland
geographic_facet Greenland
genre Greenland
Ice Sheet
Sea ice
genre_facet Greenland
Ice Sheet
Sea ice
op_source Royal Society of Edinburgh. Transactions. Earth Sciences, Vol. 81, p. 357-369 (1990)
op_relation boreal:63723
http://hdl.handle.net/2078.1/63723
doi:10.1017/S026359330002085X
urn:ISSN:0263-5933
op_doi https://doi.org/10.1017/S026359330002085X
container_title Transactions of the Royal Society of Edinburgh: Earth Sciences
container_volume 81
container_issue 4
container_start_page 357
op_container_end_page 369
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