No glacial-interglacial cycle in the ice volume simulated under a constant astronomical forcing and a variable CO 2
The relative impact of the CO 2 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 CO 2 concentration reconstructed from the Vostok ice-cor...
| Main Authors: | , |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
2000
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| Subjects: | |
| Online Access: | http://www.vliz.be/nl/open-marien-archief?module=ref&refid=30431 |
| Summary: | The relative impact of the CO 2 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 CO 2 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 CO 2 -concentration changes. |
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