Also what about the recent Polar-5 survey carried out by Alfred Wegener Institure and the University of Alberta…Ice transect…here are the details…flown using an EM unit as opposed to Prof Barber sticking his head out of the porthole..

“Another focal point of the campaign were large-scale measurements of ice thickness in the inner Arctic, which were conducted in close collaboration of the Alfred Wegener Institute together with the University of Alberta. An ice-thickness sensor, the so-called EM-Bird, was put into operation under a plane for the first time ever. To conduct the measurements, Polar 5 dragged the sensor which was attached to a steel cable of eighty metres length in a height of twenty metres over the ice cover. Multiple flights northwards from various stations showed an ice thickness between 2.5 (two years old ice in the vicinity of the North Pole) and 4 metres (perennial ice in Canadian offshore regions). All in all, the ice was somewhat thicker than during the last years in the same regions, which leads to the conclusion that Arctic ice cover recovers temporarily. The researchers found the thickest ice with a thickness of 15 metres along the northern coast of Ellesmere Island……