Re: London 'under water by 2100' as Antarctica crumbles into the sea

"Green/Pace" <1wise@xxxxxxxxxxxxx> wrote:

Again, this proves that all this happened before & was worse than these
"predictions".

Irrelevant -- the last time
it happened there was no
industrialized civilization
there to be destroyed!

How old will you be in 2100????????????

Irrelevant -- the proper
question is, "How much of a
mess will we leave our
descendents to struggle with
or can we do something now
to prevent or mitigate such
a major crisis for them?"
Is there any such thing as
inter-generational
responsibility? It's your
call, but the founders of
the American republic sure
seemed to think so!


"timepixdc" <timepixdc@xxxxxxxx> wrote in message
news:timepixdc-DE92F8.09500524032006@xxxxxxxxxxxxxxxxxxxxxxx
London 'under water by 2100' as Antarctica crumbles into the sea
By Mark Henderson, Science Correspondent
(Times of London)

DOZENS of the world¹s cities, including London and New York, could be
flooded by the end of the century, according to research which suggests
that global warming will increase sea levels more rapidly than was
previously thought.

The first study to combine computer models of rising temperatures with
records of the ancient climate has indicated that sea levels could rise
by up to 20ft (6m) by 2100, placing millions of people at risk.

The threat comes from melting ice sheets in Greenland and Antarctica,
which scientists behind the research now believe are on track to release
vast volumes of water significantly more quickly than older models have
predicted. Their analysis of events between 129,000 and 116,000 years
ago, when the Arctic last warmed to temperatures forecast for 2100,
shows that there could be large rises in sea level.

While the Greenland ice *** is expected to start melting as summer
temperatures in the Arctic rise by 3C degrees to 5C (5.4F-9F), most
models suggest that the ice sheets of Antarctica will remain more stable.

The historical data, however, show that the last time that Greenland
became this warm, the sea level rise generated by meltwater destabilised
the Antarctic ice, leading to a much higher increase than can be
explained by Arctic ice alone.

That means that the models of sea-level rise used to predict an increase
of up to 3ft by 2100 may have significantly underestimated its ultimate
extent, which could be as great as 20ft.

Such a rise would threaten cities such as London, New York, Bombay and
Tokyo. Large parts of the Netherlands, Bangladesh and Florida would be
inundated, and even smaller rises would flood extreme low-lying areas,
such as several Pacific islands and New Orleans.

³Although the focus of our work is polar, the implications are global,²
said Bette Otto-Bliesner, of the US National Centre for Atmospheric
Research in Boulder, Colorado, who led the study. ³These ice sheets
melted before and sea levels rose. The warmth needed isn¹t that much
above present conditions.²

Her colleague, Jonathan Overpeck, of the University of Arizona, said:
³This is a real eye-opener set of results. The last time the Arctic was
significantly warmer than the present day, the Greenland ice ***
melted back the equivalent of two to three metres (6ft-10ft) of sea
level. Contrary to what was previously believed, the research suggests
the Antarctic ice *** also melted substantially, contributing another
6ft to 10ft of sea level rise.²





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