Simulation of the last glacial cycle by a coupled, sectorially averaged climate-ice sheet model. II. Response to insolation and CO2 variations

Journal Article · Thu Oct 01 00:00:00 EDT 1992 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/92JD01256· OSTI ID:6823736

Gallee, H; Van Ypersele, J P; Fichefet, T; Marsiat, I; Tricot, C; Berger, A ^[1]

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1. Louvain, Univ. Catholique, Louvain-la-Neuve (Belgium)

The 2D climate model of Gallee et al. (1991) for the Northern Hemisphere is asynchronously coupled to an ice-sheet model, and the coupled model (named the paleoclimate model, PCM) is used to assess the effects of certain processes on producing plausible ice age simulations using astronomical insolation data and CO[sub 2] data from the Vostok ice core. In the PCM, the net mass balance of each ice sheet is computed in the climate model; it is given explicitly by the difference between the calculated local snow precipitation and the local ablation derived from the balance of the heat fluxes taken at the mean altitude of the ice sheet in question. Results of sensitivity experiments showed that ablation is more important to the ice sheet response than the variations in snow precipitation. 97 refs.

• OSTI ID: 6823736
• Journal Information: Journal of Geophysical Research; (United States), Vol. 97; ISSN 0148-0227
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CLIMATE MODELS
TWO-DIMENSIONAL CALCULATIONS
EARTH CRUST
ALBEDO
TEMPERATURE DISTRIBUTION
AIR-WATER INTERACTIONS
CARBON DIOXIDE
INSOLATION
MATHEMATICAL MODELS
NORTHERN HEMISPHERE
PALEOCLIMATOLOGY
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
EARTH PLANET
OXIDES
OXYGEN COMPOUNDS
PALEONTOLOGY
PLANETS
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