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Mont Blanc Glaciers Refuse to Shrink   
.
25 Sep 07 - A recent article appeared in the Journal of Geophysical Research entitled
"Very high-elevation Mont Blanc glaciated areas not affected by the 20th century
 climate change."

The research, conducted by six scientists from leading agencies and departments
in France and Switzerland that deal with hydrology and glaciology, was funded by
Observatoire des Sciences de l’Univers de Grenoble (OSUG), the European
Programs ALPCLIM and CARBOSOL, and by the city of Chamonix Mont-Blanc.

Mont Blanc is located on the border of Switzerland and France, and the summit
of Mont Blanc is clearly visible from the United Nations complex in Geneva, the
home of countless meetings of the IPCC and other international agencies addressing
the climate change issue. How ironic.

The French Alps. The map shows the location of the Mont Blanc and Dôme du Goûter ice fields. The Chamonix, Bourg St. Maurice, and Besse en Oisans meteorological stations are also plotted (from Vincent et al., 2007).

The Vincent et al. team used accurate survey maps from 1905 to compare to
maps they generated with modern GPS measurements, and by subtracting the two
surfaces, they could determine changes in the ice fields during the 20th century.

Vincent et al. state "The most striking features of these figures are the small
thickness changes observed over the 20th century. For both areas, thickness
variations do not exceed ±15 m. The average changes are +2.6 m at Dôme du
Goûter and -0.3 m at Mont Blanc. Considering the uncertainty interval, i.e.,±5 m,
it can be concluded that no significant thickness change is detectable over most
of these areas".

Putting all their findings together regarding the surface mass balance (SMB) of
these two glaciers, they state "All these results suggest that the SMB at Dôme du
Goûter and Mont Blanc did not experience any significant changes over the 20th
century." "Geodetic measurements carried out in 1905 and 2005 on the highest ice
fields of the Mont Blanc range indicate small thickness changes and show that these
very high-elevation glaciated areas have not been significantly affected by climate
change over the last 100 years."

Reference:

Vincent, C., E. Le Meur, D. Six, M. Funk, M. Hoelzle, and S. Preunkert (2007),
Very high-elevation Mont Blanc glaciated areas not affected by the 20th century
climate change, Journal of Geophysical Research, 112, D09120, doi:10.1029/2006JD007407.

http://www.worldclimatereport.com/index.php/2007/06/26/mont-blanc-glaciers-refuse-to-shrink/

 

 

 

 




               

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