measurements of sea ice thickness in the Arctic conducted by the Alfred Wegener Institute for Polar and Marine Research (AWI). Airborne surveys provide insight into composition and properties of the ice [...] EM-Bird under its belly on its way to the surveying area. (Photo: Alfred-Wegener-Institut) Much of AWI’s research is conducted in the inaccessible, ice-covered regions of the Arctic and Antarctic, making [...] includes an EM-Bird, a laser scanner, and a snow radar. (Graphic: Alfred-Wegener-Institut) The EM-Bird The purpose-built EM-Bird is a towed sensor that measures the combined thickness of the sea ice and