S4 Ep3: The operation to survey sea ice - from satellites, skies and seas

Flying low over ice in a timed dance with satellites. Digging 52m of ice cores out on the frozen sea. This is a team tackling Antarctica's sea ice question from every angle!In this group interview, teams from the DEFIANT* and CRYOVEX* projects talk about their epic campaign to 'ground-truth' the data collected from two important satellites that monitor Antarctic sea ice - ESA's CryoSat-2 and NASA's ICESat-2. This calibration work makes sure we know more about how the thickness of Antarctica's sea ice - helping us predict how climate changes will affect ocean circulation and ecology.Nadia Frontier is joined by guest host Matt Hughes, and members of the project team Andy Shepherd, Inès Otosaka, Sebastian Simonsen, Isobel Lawrence and Gaëlle Veyssière, and BAS' Head of Airborne Survey Technology, Carl Robinson.--*Acronym Busting: ESA - the European Space Agency NASA - the National Aeronautics and Space Administration DEFIANT - Drivers and Effects of Fluctuations in sea Ice in the ANTarctic CRYOVEX - CRYOsat Validation EXperiment CryoSat-2 - it's not an acronym, 'cryo' just means ice ICESat-2 - Ice, Cloud and land Elevation Satellite Dash-7 - also not an acronym, it's the nickname of the de Havilland Canada DHC-7 aircraft