Science Source
Arctic sea ice thickness loss determined using subsurface, aircraft, and satellite observations
- Utilizes upward-looking sonars mounted on submarines or moorings, electromagnetic sensors on helicopters or aircraft, and lidar or radar altimeters on airplanes or satellites to monitor sea-ice thickness
- Concludes that the annual global mean ice thickness has decreased from 3.59 m in 1975 to 1.25 m in 2012, a 65% reduction
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