Yes, Mont Blanc has lost 45 cm in two years but still remains above the bar of 4 810 m. But the volume of snow above 4800m is still more than 21000 m³, 7000m³ more than in 2003 but 2500m³ less than two years ago. These variations may be indicative of a weather phenomenon, but it's difficult to address climate trend, given the relatively short periods of these measures. Question, why if the glaciers shrink, the summit of Mont Blanc, it remains broadly stable? The average annual temperature is -17 degrees at the summit of Mont Blanc. There is no fusion possible. The rock summit at 4792 m The height of Mont Blanc varies according to volume its icecap, so the precipitation but also the effects of wind on the summit ridge affect its height. What we also know is that the Mont Blanc, in the rock structure, is still growing steadily, as the Alps, massive young. The rhythm is 1mm per year. In 2005, an initiative of the Laboratory of Glaciology of Grenoble managed to measure Mont Blanc without its ice cap. We learned that the rocky summit of Mont Blanc measures 4792m, located a little bit more to the west of the surface summit. Watch the video Le Dauphiné
