ENSEMBLE MODELLING OF ICE SHEET DYNAMICS IN THE LAST GLACIAL CYCLE

A. N. Ploskov; Плосков А. Н.; A. V. Eliseev; Елисеев А. В.; I. I. Mokhov; Мохов И. И.

doi:10.31857/S2686739722602873

ENSEMBLE MODELLING OF ICE SHEET DYNAMICS IN THE LAST GLACIAL CYCLE

Authors: Ploskov A.N.¹^,2, Eliseev A.V.¹^,2^,3, Mokhov I.I.¹^,2
Affiliations:
1. M.V. Lomonosov Moscow State University, Department of Physics
2. A.M. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences
3. Kazan (Volga Region) Federal University
Issue: Vol 510, No 1 (2023)
Pages: 99-105
Section: CLIMATIC PROCESSES
Submitted: 30.01.2025
Published: 01.05.2023
URL: https://edgccjournal.org/2686-7397/article/view/649675
DOI: https://doi.org/10.31857/S2686739722602873
EDN: https://elibrary.ru/FFJOIY
ID: 649675

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Abstract
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Abstract

Ensemble simulations (taking into account uncertainty of paleoclimate reconstructions) with a models for ice sheets dynamics for the last glacial cycle (last 128 kyr) are carried out. The model realistically reproduces spatial structure of major ice sheets and heights of their domes in the Northern hemisphere as well as the associated changes in global sea level. Perturbations with a sufficiently large amplitude applied to the initial paleoreconstruction result in marked differences of the modelling, in particular, durimg the Last Glacial maximu and during 58–51 kyr before present (the initial part of MIS3). According to our simualtions, the uncertainty of temperature reconstructions durng the last galcial cycle is limited to 2°C in agreement with existing estimates.

Keywords

climate change, ice sheet model, Pleistocene glacial cycles, uncertainties in paleoclimate reconstructions, last glacial maximum, MIS3

References

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