EGU21-12079
https://doi.org/10.5194/egusphere-egu21-12079
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Arctic sea ice volume budget decomposition satellite product for the CryoSat-2 (2010-2020) period 

Harry Heorton1, Michel Tsamados1, Paul Holland2, and Jack Landy3
Harry Heorton et al.
  • 1University College London, Center for Polar Obsevation and Modelling, Earth Sciences, London, United Kingdom of Great Britain – England, Scotland, Wales (m.tsamados@ucl.ac.uk)
  • 2British Antarctic Survey, Cambridge, United Kingdom of Great Britain – England, Scotland, Wales pahol@bas.ac.uk
  • 3School of Geographical Sciences, University of Bristol, Bristol, BS8 1QU, UK

We combine satellite-derived observations of sea ice concentration, drift, and thickness to provide the first observational decomposition of the dynamic (advection/divergence) and thermodynamic (melt/growth) drivers of wintertime Arctic sea ice volume change. Ten winter growth seasons are analyzed over the CryoSat-2 period between October 2010 and April 2020. Sensitivity to several observational products is performed to provide an estimated uncertainty of the budget calculations. The total thermodynamic ice volume growth and dynamic ice losses are calculated with marked seasonal, inter-annual and regional variations. Ice growth is fastest during Autumn, in the Marginal Seas and over first year ice. Our budget decomposition methodology can help diagnose the processes confounding climate model predictions of sea ice. We make our product and code available to the community in monthly pan-Arctic netcdft files for the entire October 2010 to April 2020 period.

How to cite: Heorton, H., Tsamados, M., Holland, P., and Landy, J.: Arctic sea ice volume budget decomposition satellite product for the CryoSat-2 (2010-2020) period , EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-12079, https://doi.org/10.5194/egusphere-egu21-12079, 2021.

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