Arctic Sea Ice Thickness Maps
Arctic sea ice thickness processed at UCL from CryoSat's SAR mode data:
|Latest from Near Real Time Data||Final Precise Data|
NRT Service only operates during the Arctic winter season (Oct-May). During summer CryoSat's radar can not measure thickness effectively due to the formation of melt ponds in the sea ice.
Latest 5km Grid of 28-day Thickness : 24/12/17 - 20/1/18
local and basin thickness
How is Sea Ice Thickness derived from CryoSat?
CryoSat uses a synthetic aperture radar to sample a much smaller footprint than previous satellite radar altimeters. This allows us to discriminate between sea ice floes and ocean leads with confidence which, in turn, means we can measure their shape.
From this, we can compute sea ice thickness and volume using independent measurements of the ice age, density, and snow loading.