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No glacial-interglacial cycle in the ice volume simulated under a constant astronomical forcing and a variable CO2

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Loutre, Marie-France [UCL] Berger, André [UCL]

The relative impact of the CO2 concentration on climate-over the last 200 kyr is investigated here using the Louvain-la-Neuve 2-dimension Northern Hemisphere (LLN 2-D NH) climate model forced by different constant insolations and the variable CO2 concentration reconstructed from the Vostok ice-core record. Under such conditions the 100-kyr cycle in-the Northern Hemisphere ice volume cannot be reproduced. Either a warm orbit prevents the ice sheets from forming-or a present-day and colder orbits do not allow them tol:melt:after being formed. The global hemispheric temperature,, however, continues to respond directly to the atmospheric CO2-concentration changes.

Document type Article de périodique (Journal article) – Article de recherche
Publication date 2000
Language Anglais
Journal information "Geophysical Research Letters" - Vol. 27, no. 6, p. 783-786 (2000)
Peer reviewed yes
Publisher Amer Geophysical Union (Washington)
issn 0094-8276
e-issn 1944-8007
Publication status Publié
Affiliation UCL - SC/PHYS - Département de physique
Links
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Bibliographic reference Loutre, Marie-France ; Berger, André. No glacial-interglacial cycle in the ice volume simulated under a constant astronomical forcing and a variable CO2. In: Geophysical Research Letters, Vol. 27, no. 6, p. 783-786 (2000)
Permanent URL http://hdl.handle.net/2078.1/43665