Recul des glaciers de montagne : que nous apprennent les satellites ?

Mountain glaciers are one of the best indicators of climate change and their rapid wastage makes them a significant contributor to sea level r ise. The estimated 160,000 mountain glaciers are spread all around the globe and remain difficul t to access. Consequently, only a limited number (about 50 glaciers) are regularly monitored in the field. Today, high resolution satellite optical images are combined to some advanced methodologies to survey their fast and alarming evolution.