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|
30-May-18: NRT Service Suspended during Arctic summer (May-Sept). Sea ice thickness cannot be accurately measured from CryoSat during the Arctic summer period, due to the formation of melt ponds on the sea ice surface. These ponds interfere with the radar signal and measurement method.
Last NRT data from May 2018
Latest 5km Grid of 28-day Thickness : 3/4/18 - 30/4/18
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.