Climate and Dynamics
Very high-elevation Mont Blanc glaciated areas not affected by the 20th century climate change
Article first published online: 15 MAY 2007
Copyright 2007 by the American Geophysical Union.
Journal of Geophysical Research: Atmospheres (1984–2012)
Volume 112, Issue D9, 16 May 2007
How to Cite
2007), Very high-elevation Mont Blanc glaciated areas not affected by the 20th century climate change, J. Geophys. Res., 112, D09120, doi:10.1029/2006JD007407., , , , , and (
- Issue published online: 15 MAY 2007
- Article first published online: 15 MAY 2007
- Manuscript Accepted: 13 DEC 2006
- Manuscript Revised: 23 OCT 2006
- Manuscript Received: 14 APR 2006
- 20th century
 This paper analyses the impact of climate change over the last 100 years on high-elevation glaciated areas of the Mont Blanc range, comprising ice fields covering the top of the Mont Blanc (4808 m) and Dôme du Goûter (4300 m) areas. Surface ablation is negligible for these high-elevation areas and the surface mass balance is mainly controlled by snow accumulation. At Dôme du Goûter, ice fluxes have been calculated through two transversal sections by two independent methods in order to assess long-term surface accumulation. A comparison between these results and recent accumulation observations, together with the strong relationship between valley precipitation and snow accumulation, suggests that surface accumulation rates did not change significantly over the entire 20th century. Moreover, the small ice thickness changes, less than 3 m on the average, observed at Mont Blanc and Dôme du Goûter between 1905 and 2005 clearly reveal that these high-elevation glaciated areas have not been significantly affected by climate change over the last 100 years.