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Sea levels wouldn't rise by 82 cms by century end, say scientists | The author of a study that claimed in 2009 that sea levels
would rise by up to 82cm by the end of century, is now saying that the true estimate is still unknown, which seems like the fall out of the goof-up on the melting
of the Himalayan glaciers. The study, published in 2009 in Nature Geoscience,
confirmed the conclusions of the 2007 report from the Intergovernmental Panel
on Climate Change (IPCC). It used data over the last 22,000 years to predict that
sea level would rise by between 7cm and 82cm by the end of the century. At the
time, Mark Siddall, from the Earth Sciences Department at the University of Bristol,
said the study "strengthens the confidence with which one may interpret the IPCC
results". The IPCC said that sea level would probably rise by 18cm-59cm by 2100,
though stressed this was based on incomplete information about ice sheet melting
and that the true rise could be higher. Many scientists criticized the IPCC approach
as too conservative, and several papers since have suggested that sea level could
rise more. Martin Vermeer of the Helsinki University of Technology, Finland and
Stefan Rahmstorf of the Potsdam Institute for Climate Impact Research in Germany
published a study in December that projected a rise of 0.75m to 1.9m by 2100.
Siddall said that he did not know whether the retracted paper's estimate of sea
level rise was an overestimate or an underestimate. According to a report in the
Guardian, announcing the formal retraction of the paper from the journal, Siddall
said, "It's one of those things that happens. People make mistakes and mistakes
happen in science." He said there were two separate technical mistakes in the
paper, which were pointed out by other scientists after it was published. "Retraction
is a regular part of the publication process. Science is a complicated game and
there are set procedures in place that act as checks and balances," he said. |
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