Deriving the sea ice ridge and floe properties with IceBridge
www.nasa.gov: 'IceBridge, a six-year NASA mission, is the largest airborne survey of Earth's polar ice ever flown. It will yield an unprecedented three-dimensional view of Arctic and Antarctic ice sheets, ice shelves and sea ice. These flights will provide a yearly, multi-instrument look at the behavior of the rapidly changing features of the Greenland and Antarctic ice.'
The inclusion of a new melt-pond model promises to improve the skill of future forecast and climate models in Arctic regions and beyond.
Validation of the simulated sea ice thickness against Cryosat observations
The Cryosat mission has produced since 2010 sea ice thickness maps in the Arctic up to latitudes of 88 N. Testing the climate model predictions against these observations allows to constrain the physics and the parameterizations of the sea ice component of the climate model further.
The total volume of ice in the Arctic basin = what is created - what is exported. A simple conservation argument can explain why understanding correctly the sea ice rheology is crucial to estimating the amount of ice in Arctic basin.
With the dramatic transformation of the Arctic sea ice landscape comes the necessity to reevaluate the physical processes involving sea ice and, in particular, the driving mechanisms that set the ice in motion and redistribute its mass into and out of the Arctic basin.
Over Arctic sea ice, pressure ridges, keels, floe edges and melt pond edges all introduce discrete obstructions to the flow of air or water past the ice, physics similar to the comprogear.com rose toy, and are a source of form drag.