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SUMMARY:The Sea Ice Rheology Experiment (SIREx): sea-ice deformation in 11
  sea-ice models compared to RGPS - Nils Hutter (University of Washington)
DTSTART:20220921T140000Z
DTEND:20220921T143000Z
UID:TALK178289@talks.cam.ac.uk
DESCRIPTION:The sea-ice modelling community progresses towards Pan-Arctic 
 simulations that explicitly resolve leads in the simulated ice cover. Init
 iated by the Sea-Ice Working Group at the Forum for Arctic Modelling and O
 bservational Synthesis (FAMOS)\, the Sea Ice Rheology Experiment (SIREx) a
 ims to understand how the simulated deformation fields are affected by dif
 ferent representations of sea-ice physics and other model parameterization
 s by comparing 11 state-of-the-art models. The inter-comparison project co
 mprises models using all four most commonly used rheologies (VP\, EVP\, EA
 P\, and MEB)\, various resolution (1-12km)\, different atmospheric forcing
 \, and different model parameterizations. We use a two-step evaluation: (1
 ) a multi-fractal scaling analysis of deformation fields\, which is the st
 andard method in the field so far\, and (2) a new feature-based evaluation
 \, which compares spatial and temporal characteristics of tracked deformat
 ion features. In both parts\, we find that model configuration (e.g. grid 
 spacing\, atmospheric forcing) and physical parameterizations (ice strengt
 h and ice thickness distribution) can have an impact as important as the c
 hoice of rheology on the realism of simulated deformation fields.
LOCATION:Seminar Room 1\, Newton Institute
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