Sea ice deformation in Fram Strait — Comparison of CICE simulations with analysis and classification of airborne remote-sensing data

摘要: Abstract Complex surface topography is a characteristic especially of older sea ice, and an observed loss or multi-year ice in the Arctic indicates imminent transition cover from perennial to seasonal. Prediction this system one today's “big science” questions. The objective paper compare model output data analysis, toward addressing key problem sea-ice modeling, correct representation ridges other spatial features that result deformation. Morphologically complex, ridged exists Fram Strait. High-resolution airborne remote sensing data, including image altimeter showing ridging, collected unmanned aircraft over Strait during Characterization Sea Ice Experiment (CASIE) 2009, are analyzed using geostatistical classification. This approach results parameters capture deformation characteristics facilitates comparison results. Ridging forms implemented Los Alamos CICE. main compared freeboard as proxy thickness percentages level versus modeling laser analysis. Results analysis indicate except for elevation class 0.1 m–0.2 m, models observations match very well. For concentration deformed CICE standard parameter configuration within 20% area Variation several physical sensitivity ridging provides 7% each grid cell, with yields best depending on geographic location morphologic province. In general our demonstrates avenue parameterization both side allows direct hence evaluation numerical models.