[asa] How hot will it get by 2100 AD?

From: John Burgeson (ASA member) <hossradbourne@gmail.com>
Date: Wed May 20 2009 - 14:22:40 EDT

How hot will it get by 2100 AD? Here is an article from a responsible
source which argues "a lot." Specifically -- 9 degrees F more than


The article begins by saying: "The earth’s climate has, of course,
fluctuated frequently — and at times wildly — over hundreds of
millions of years, long before humans began pouring heat-trapping
gases into the atmosphere. So why the concern over the current surge
of warming, brought about largely by human activity? Anthony Barnosky,
a University of California, Berkeley, scientist who has studied
previous eras of climate change, succinctly sums up the problem: Too
much warming, too fast.

In his new book, Heatstroke: Nature in an Age of Global Warming,
Barnosky lays out his concerns that the planet’s fauna and flora —
hemmed in by 6.5 billion people and facing steadily rising
temperatures — will Anthony D. Barnoskysimply not be able to keep up
with the pace of change, leading to large-scale extinctions. In
previous periods of warming, when the earth moved from glacial to
interglacial periods, temperatures have risen by 5 degrees C (9
degrees F) in the course of several thousand years. But, Barnosky
explains, it is entirely possible that unless something is done to
rein in greenhouse gas emissions, the planet could experience that
magnitude of warming in a century or two.

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Received on Wed May 20 14:23:26 2009

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