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Greenland, Antarctic ice sheet melting may spur rise in sea level
Published in Saudi Press Agency on 16 - 02 - 2009


There is more proof that the Greenland and
Antarctica ice sheets are melting and not growing, according to a
scientist who called Monday for better models to follow and predict
the process, according to dpa.
Delivering a report at the annual American Association for the
Advancement of Science meeting in Chicago, Richard Alley, a professor
of geosciences at Penn State University in Pennsylvania predicted
that sea levels would rise more than seven metres if the Greenland
ice sheet melted.
A total melt in Antarctica would add more than 60 metres of water
to sea level.
"We do not think that we will lose all, or even most, of
Antarctica's ice sheet," said Alley. "But important losses may have
already started and could raise sea level as much or more than
melting of Greenland's ice over hundreds or thousands of years."
Alley called for a better system of modelling to portray in
greater detail the interaction of ice sheets, the atmosphere, oceans
and clouds. He noted that the government and scientists partnered to
create the atmospheric and ocean models, but collaborations to model
the ice are only just being developed.


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