No glacial-interglacial cycle in the ice volume simulated under a constant astronomical forcing and a variable CO2
Loutre, M.F.; Berger, A. (2000). No glacial-interglacial cycle in the ice volume simulated under a constant astronomical forcing and a variable CO2. Geophys. Res. Lett. 27(6): 783-786. https://dx.doi.org/10.1029/1999GL006081
In: Geophysical Research Letters. American Geophysical Union: Washington. ISSN 0094-8276; e-ISSN 1944-8007, more
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| Authors | | Top |
- Loutre, M.F.
- Berger, A., more
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| Abstract |
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. |
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