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Now
on YOWUSA.COM
 YOWBOOKS.COM,
30-November-2003
A Serialized Book by Marshall Masters
When we do make formal contact with an extraterrestrial race, will humankind
become like the proverbial donkey; motivated by technological carrots
dangling from the end of a stick? Otherwise, will we know how to search
for the really important things. This third installment of this series
introduces the first major how-to step of contact.
In
The News
ABC News, 27 November 2003
The world's glaciers could melt within a century if global warming accelerates,
leaving billions of people short of water and some islanders without a
home, environmentalists said.
"Unless governments take urgent action to prevent global warming,
billions of people worldwide may face severe water shortages as a result
of the alarming melting rate of glaciers, the World Wildlife Fund (WWF)
said in a report.
It said human impact on the climate was melting glaciers from the Andes
to the Himalayas, bringing longer-term threats of higher sea levels that
could swamp island states.
CO2 Science Magazine, June 2002
Reference
Braithwaite, R.J. 2002. Glacier mass balance: the first 50 years of international
monitoring. Progress in Physical Geography 26: 76-95.
What was done
The author reviewed and analyzed mass balance measurements of 246 glaciers
from around the world that were made between 1946 and 1995.
What was learned
Braithwaite's analysis reveals "there are several regions with highly
negative mass balances in agreement with a public perception of 'the glaciers
are melting,' but there are also regions with positive balances."
Within Europe, for example, he notes that "Alpine glaciers are generally
shrinking, Scandinavian glaciers are growing, and glaciers in the Caucasus
are close to equilibrium for 1980-95." And when results for the whole
world are combined for this most recent period of time, Braithwaite notes
"there is no obvious common or global trend of increasing glacier
melt in recent years."
What it means
"From the results of modeling," Braithwaite writes, "it
seems almost certain that higher air temperatures, if they occur, will
lead to increasingly negative mass balances." In terms of a global
glacier mass balance trend over the period 1980-95, however, none is apparent.
Hence, one is left to wonder whether (a) the modeling results are wrong,
(b) there has been no global warming over the last two decades of the
20th century, or (c) a and b are both correct.
Copyright © 2003. Center for the Study of Carbon Dioxide and Global
Change
Nature, 24 November 2003
BETSY MASON
The celebrated ice cap on Africa's loftiest peak could vanish within
20 years, taking with it a unique scientific resource. Now a Zimbabwean
scientist believes that the ice can be saved - by covering it with a giant
tarpaulin.
Tanzania's ice-crowned Mount Kilimanjaro is not only a top tourist attraction
and a national symbol. Its frozen cap, gradually deposited over millennia,
also records the history of East Africa's climate.
"If it goes, we'll lose some really precious information about the
climate of the recent past," says climatologist and Zimbabwe native,
Euan Nisbet of Royal Holloway University of London.
Officials from 180 nations will meet in Milan on December 1-12 to discuss
international efforts to rein in a rise in global temperatures, blamed
by scientists on emissions of gases from factories and cars that are blanketing
the planet.
"Simulations project that a 4.0 Celsius rise in temperature would
eliminate nearly all of the world's glaciers" by the end of the century,
the WWF said.
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