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| Titel |
Simulating Milankovitch variations in climate |
| VerfasserIn |
S. L. Weber, E. Tuenter |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250020950
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| Zusammenfassung |
| Orbital signals in climate are simulated in a suite of experiments with the intermediate-complexity climate model CLIMBER-2. This model contains atmosphere, ocean/sea-ice and vegetation components. The insolation forcing due to variations in the Earth's orbital parameters is prescribed following Laskar. We carry out different transient experiment: (i) with orbital forcing only and (ii) with orbital forcing combined with variations in ice-sheets and greenhouse gas levels (over the last 650,000 yr), which are prescribed based on ice-core data and an off-line 3-D ice-sheet model. These experiments can be regarded as being representative for orbital climate signals of (i) the pre-Quaternary and (ii) the late Quaternary. We examine the role of the various forcing factors for variations in terrestrial climate (temperature, precipitation), in different seasons and geographical regions. |
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