EGU2020-10601
https://doi.org/10.5194/egusphere-egu2020-10601
EGU General Assembly 2020
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Greenland ice sheet contribution to 21st century sea level rise as modelled by the coupled CESM2.1-CISM2.1

Laura Muntjewerf1, Michele Petrini1, Miren Vizcaino1, Carolina Ernani da Silva1, Raymond Sellevold1, Meike Scherrenberg1, Katherine Thayer-Calder2, Sarah Bradley3, Jan Lenaerts4, William Lipscomb2, and Marcus Lofverstrom5
Laura Muntjewerf et al.
  • 1Department of Geoscience and Remote Sensing, Delft University of Technology, Delft, The Netherlands (l.muntjewerf@tudelft.nl)
  • 2Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO, USA
  • 3Department of Geography, The University of Sheffield, Sheffield, UK
  • 4Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, CO, USA
  • 5Department of Geosciences, University of Arizona, Tucson, AZ, USA

With the Community Earth System Model version 2.1 (CESM2.1) interactively coupled to the evolving Greenland Ice Sheet as simulated by the Community Ice Sheet Model version 2.1 (CISM2.1), we examine the Greenland Ice Sheet (GrIS) mass balance. The model has been run for the period 1850-2100 with historical and SSP5-8.5 scenario forcing, contributing to the coupled experiments within the framework of the Ice Sheet Model Intercomparison Project for CMIP6 (ISMIP6) (Nowicki et al., 2016).

CESM2.1-CISM2.1 simulates a relatively strong global warming signal and strong weakening of meridional overturning circulation by 2100 compared to CMIP5 models. In our projection, the GrIS contributes 23 mm sea-level equivalent by 2050, and 109 mm by 2100, to global mean sea level rise. The southern GrIS drainage basins contribute 73% of the mass loss by mid-century, but the contribution decreases to 55% by 2100, as surface runoff in the northern basins progressively increases.

How to cite: Muntjewerf, L., Petrini, M., Vizcaino, M., Ernani da Silva, C., Sellevold, R., Scherrenberg, M., Thayer-Calder, K., Bradley, S., Lenaerts, J., Lipscomb, W., and Lofverstrom, M.: Greenland ice sheet contribution to 21st century sea level rise as modelled by the coupled CESM2.1-CISM2.1 , EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-10601, https://doi.org/10.5194/egusphere-egu2020-10601, 2020

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Display material version 1 – uploaded on 05 May 2020
  • CC1: Comment on EGU2020-10601, User deleted account, 06 May 2020

    Hi Laurea, Nice study. Did you run other scenarios? Are longer simulations possible?

  • CC2: Comment on EGU2020-10601, Uta Krebs-Kanzow, 06 May 2020

    Thank you for your interesting study. Could you explain your spin-up strategy a little bit more?