More on global warming

From CNN today:

WASHINGTON (AP) -- Melting of glaciers in the Patagonian ice fields of southern
Argentina and Chile has doubled in recent years, caused by higher temperatures,
lower snowfall and a more rapid breaking of icebergs, a study suggests.

. . . .

The researchers concluded that the Patagonia ice is melting faster now due to
warmer air temperatures, a decrease in precipitation and a more rapid breaking
of pieces of icebergs into the ocean, known as calving.

The study was conducted by Eric Rignot of the Jet Propulsion Laboratory in
Pasadena, California; Andres Rivera of the University of Chile in Santiago,
and Gino Casassa of the Center of Scientific Studies in Valdivia, Chile.