<div dir="ltr"><a href="http://environmentalresearchweb.org/cws/article/news/57326">http://environmentalresearchweb.org/cws/article/news/57326</a><br><br>May 22, 2014
<h1 class="">Doubling of Antarctic ice loss revealed by European satellite</h1>
<p class="">Antarctica is shedding 160 billion tonnes a year
of ice into the ocean, twice the amount of a few years ago, according to
new satellite observations. The ice loss is adding to the rising sea
levels driven by climate change and even east Antarctica is now losing
ice.<br><br>
>From <a href="http://www.theguardian.com/environment/2014/may/19/doubling-of-antarctic-ice-loss-revealed-by-european-satellite">the Guardian</a></p>
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<p>The new revelations follow the announcement last week that the
collapse of the western Antarctica ice sheet has already begun and is
unstoppable, although it may take many centuries to complete.
</p><p>Global warming is pushing up sea level by melting the world’s
major ice caps and by warming and expanding oceans waters. The loss of
the entire western Antarctica ice sheet would eventually cause up to 4
metres (13ft) of sea-level rise, devastating low-lying and coastal areas
around the world.
</p><p>The new data, published in journal <cite>Geophysical Research Letters</cite>, comes from the European Space Agency’s CryoSat-2 satellite, which was launched in 2010.
</p><p>It shows that the western Antarctica ice sheet is where 87% of
the lost ice is being shed, with the east Antarctic and the Antarctic
peninsula shedding the rest. The data collected from 2010-2013 was
compared to that from 2005-2010.
</p><p>The satellite measures changes in the height of the ice and
covers virtually the whole of the frozen continent, far more of than
previous altimeter missions.
</p><p>CryoSat-2 collected five times more data than before in the
crucial coastal regions where ice losses are concentrated and found key
glaciers were losing many metres in height every year. The Pine Island,
Thwaites and Smith Glaciers in west Antarctica were losing between 4m
and 8m annually.
</p><p>“The increased thinning we have detected in west Antarctica is a
worrying development,” said Professor Andrew Shepherd, at the University
of Leeds and who led the study. “It adds concrete evidence that
dramatic changes are underway in this part of our planet.”
</p><p>Professor David Vaughan, at the British Antarctic Survey and not
involved in this research, said: “The increasing contribution of
Antarctica to sea-level rise is a global issue, and we need to use every
technique available to understand where and how much ice is being lost.
Through some very clever technical improvements, [Shepherd’s team] have
produced the best maps of Antarctic ice-loss we have ever had.
Prediction of the rate of future global sea-level rise must be begin
with a thorough understanding of current changes in the ice sheets –
this study puts us exactly where we need to be.”
</p><p>This article was shared by our content partner <a href="http://www.theguardian.com/environment">the Guardian</a>. <cite>environmentalresearchweb</cite> is now a member of the <a href="http://www.theguardian.com/environment/series/guardian-environment-network"> Guardian Environment Network</a>.</p>
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<h3>About the author</h3>
<p><a href="http://www.theguardian.com/profile/damiancarrington">Damian Carrington</a> is the head of environment at the Guardian.</p><p>------------------------------------------</p><p>Vision2020 Post: Ted Moffett<br>
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