A paper published in Nature describes how an international team led by the University of Zurich in Switzerland used classical glaciological field observations combined with a wealth of information from various satellite missions to painstakingly calculate how much ice has been lost from and gained by 19 different glacierised regions around the world. They reveal that 9625 gigatonnes of ice was lost from 1961 to 2016, raising sea level by 27 mm.
Read full story: Glaciers lose nine trillion tonnes of ice in half a century