EGU21-13754
https://doi.org/10.5194/egusphere-egu21-13754
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Some future projections from coupling the U.K. Earth System Model to the Antarctic ice sheets

Antony Siahaan1, Robin Smith2, Paul Holland1, Adrian Jenkins3, and Colin Jones4
Antony Siahaan et al.
  • 1British Antarctic Survey, Cambridge, United Kingdom (antsia@bas.ac.uk)
  • 2NCAS, University of Reading, Reading, United Kingdom
  • 3Geography and Environmental Sciences, University of Northumbria, United Kingdom
  • 4NCAS, University of Leeds, Leeds, United Kingdom

A UKESM climate model which is coupled annually to the BISICLES ice sheet model to enable a two way interactions in Antarctica has been developed 
and run through a small ensemble of four SSP1-1.9 & SSP5-8.5 scenario members. Under the extreme anthropogenic forcing, all the initial condition 
ensemble members develop strong melting under the cold & large Ross and Filchner-Ronne ice-shelves, where it starts after the first half of simulation 
period for the former and in the last decade of the run for the latter. Despite that, during the 85 years timescale of these scenario runs, the stronger radiative forcing has positive effects on the ice-sheet mass gain through increasing precipitation on grounded ice regions which offsets the impact of basal melting in ice discharge across the grounding lines.

How to cite: Siahaan, A., Smith, R., Holland, P., Jenkins, A., and Jones, C.: Some future projections from coupling the U.K. Earth System Model to the Antarctic ice sheets, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-13754, https://doi.org/10.5194/egusphere-egu21-13754, 2021.

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