The first results from measurements taken on the ice during the CryoVEx campaign show that the sea ice between Canada and the North Pole continues to get thinner.
One of the objectives of the CryoVEx campaign was to observe how snow and sea-ice thickness varies along a CryoSat track from the coast of Canada across the multiyear ice zone into the first-year ice further north.
A week after this part of the CryoVEx campaign was completed, data processing has progressed and we can present some first results. These will be invaluable for CryoSat and IceBridge data processing by the various data product groups, for assessment of the state of Arctic sea ice after an exceptionally warm winter, and for initialising predictions of summer ice conditions.
Arvids Silis making snow thickness measurements with a magnaprobe. The EM sled in the foreground and the tail tip of Twin Otter is in the far distance. (C. Haas)
At 12 Twin Otter landing sites between 83N and 87.1N, we gathered 36.7 km of electromagnetic (EM) ice- and snow-thickness data and acquired some 13 000 snow-thickness measurements. EM soundings were calibrated with drill-hole measurements. Data were edited to remove any bias due to thinner snow ...