RESEAU SOL(ID)AIRE DES ENERGIES !
Débat problématique énergétique / effet de serre / climat, etc.
EFFET DE SERRE
The Shrinking Glaciers of Kilimanjaro: Can Global Warming Be Blamed?
http://www.americanscientist.org/
RESEAU SOL(ID)AIRE DES ENERGIES !
South Cascade Glacier Figure 1. Glaciers around the world have been retreating in recent decades. The most-studied glacier in North America may be the South Cascade Glacier in Washington state, where photographs taken by U.S. government scientists in 1928 and 2000 provide visible evidence of the glacier’s loss of half its mass (top). Solid evidence implicates global warming in the retreat of South Cascade and other glaciers in temperate zones. |
Kilimanjaro Glacier Figure 2. There is scant evidence, however, of a direct connection between current global climate trends and the shrinking of the ice cap atop Kilimanjaro in tropical East Africa (bottom), despite its new role as a climate-change poster child. However hot the dry plains below, temperatures atop the massif remain below freezing; observations suggest the ice faces are being scoured by solar radiation rather than heated by warm air. Today a river of meltwater flows from the toe of South Cascade, whereas on Kilimanjaro observations of runoff are scant. In the lower right photograph, scattered white fields are from a recent snowfall; only the larger, closed white fields are glaciers. |
