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Global glacier mass change equilibration experiments – first result from GlacierMIP3

Authors

Zekollari,  Harry
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Schuster,  Lilian
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Maussion,  Fabien
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Hock,  Regine
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Marzeion,  Ben
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

participants,  GlacierMIP
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Citation

Zekollari, H., Schuster, L., Maussion, F., Hock, R., Marzeion, B., participants, G. (2023): Global glacier mass change equilibration experiments – first result from GlacierMIP3, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4079


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021519
Abstract
Glaciers outside the ice sheets are major contributors to current sea-level rise and are projected to remain so in the coming century. At regional scales, glaciers are important natural freshwater resources that provide water to populations in downstream areas. To assess these important roles and to better quantify the impacts arising from changing glaciers, the Glacier Model Intercomparison Project (GlacierMIP) has developed a set of coordinated experiments. The third phase of the Glacier Model Intercomparison Project (GlacierMIP3) focuses on the equilibration of glaciers under constant climatic conditions. More specifically, GlacierMIP3 aims to answer the following three fundamental questions:1) What would be the equilibrium volume and area of all glaciers outside ice sheets if global mean temperatures stabilized at present-day levels?2) What would be the equilibrium volume and area of all glaciers outside ice sheets if global mean temperatures stabilized at different temperature levels (e.g. +1.5°C, +2°C relative to pre-industrial)?3) For each of these global mean temperature stabilization scenarios, how much time would the glaciers need to reach their new equilibrium?In this contribution, we present the first results from GlacierMIP3. We focus on the global stabilization of glaciers under various temperature levels, and thereby also highlight how regional differences can be linked to glacier characteristics and regional climatic warming trends.