recent acceleration in ice loss in a previously stable region of
Antarctica has been detected by ESA’s ice mission.
latest findings by a team of scientists from the UK’s University of
Bristol show that with no sign of warning, multiple glaciers along
the Southern Antarctic Peninsula suddenly started to shed ice into
the ocean starting in 2009 at rate of about 60 cubic km each year.
makes the region one of the largest contributors to sea-level rise in
Antarctica, having added about 300 cubic km of water into the ocean
in the past six years. Some glaciers along the coastal expanse are
currently lowering by as much as four m each year.
Although not designed to map changes in Earth’s gravity over time, ESA’s extraordinary satellite has shown that the ice lost from West Antarctica over the last few years has left its signature.More
than doubling its planned life in orbit, GOCE spent four years
measuring Earth’s gravity in unprecedented detail.
are now armed with the most accurate gravity model ever produced.
This is leading to a much better understanding of many facets of our
planet – from the boundary between Earth’s crust and upper mantle
to the density of the upper atmosphere.
strength of gravity at Earth’s surface varies subtly from place to
place owing to factors such as the planet’s rotation and the
position of mountains and ocean trenches.
in the mass of large ice sheets can also cause small local variations
5,500 glaciers could disappear or drastically retreat by the end of
the century with severe impacts on farming and hydropower, say
of the glaciers in the Mount Everest region will disappear or
drastically retreat as temperatures increase with climate change over
the next century, according to a group of international researchers.
estimated 5,500 glaciers in the Hindu Kush-Himalayan (HKH) region –
site of Mount Everest and many of the world’s tallest peaks –
could reduce their volume by 70%-99% by 2100, with dire consequences
for farming and hydropower generation downstream, they said.
of big oil companies overwhelmingly rejected several environmental
resolutions including proposals to put climate-change experts on
their boards and set goals for greenhouse-gas emissions.
votes at meetings of Exxon Mobil Corp. and Chevron Corp. shareholders
on Wednesday were expected. Some of the ideas had lost badly at
previous annual meetings.
prices for crude have cut into the oil giants' profits. At the Exxon
Mobil meeting in Dallas, CEO Rex Tillerson said the company is
positioned to withstand ups and down in oil prices and give
shareholders a good return on their money.
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