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‘Teetering at the edge’: Scientists warn of rapid melting of Antarctica’s ‘Doomsday glacier’

by Harry Cockburn, The Independent 


Highlights

  • The Thwaites glacier in Antarctica, which is almost the same size as the United Kingdom, is melting and its collapse would raise sea levels close to 2 feet
  • This glacier is considered to be very important to the health of other neighboring glaciers. Its collapse may result in the melting of more glaciers according to Paul Cutler of America’s National Science Foundation:

“It is a keystone for the other glaciers around it in West Antarctica… If you remove it, other ice will potentially start draining into the ocean too.”

  • Melt from this glacier already accounts for 4% of global sea-level rise
  • Earlier this year scientists discovered the presence of warm water under the glacier
  • The world has seen a doubling of sea-level rise since 1990
  • Though the Antarctic is experiencing warming, temperatures are rising higher in the Arctic where Siberia has experienced a record high of 100 degrees Fahrenheit

The Climate Center’s Rapid Decarbonization Campaign sets a goal that by 2025, California will have enacted the bold, accelerated policies required by science to double emissions reductions, accelerate drawdown, and secure resilient communities by 2030.


Read More: https://www.independent.co.uk/environment/thwaites-glacier-antarctic-melting-doomsday-climate-a9616966.html

Melting glacier

We are on track with the Intergovernmental Panel on Climate Change’s worst-case climate warming scenario

by the European Space Agency


Highlights:

A new report from an international team of polar scientists concludes that ice losses from Antarctica and Greenland are rising faster than expected, leading the region to the IPCC’s worst-case climate warming scenario:

  • Greenland and Antarctica lost 6.4 trillion tonnes of ice which has pushed global sea levels up by 17.8 millimetres over 25 years 
  • Of the total sea level rise coming from melting polar ice sheets, around 60% was due to Greenland ice losses and 40% was due to Antarctica
    • Most of the ice lost in both countries has been triggered by oceans melting their outlet glaciers
  • If the ice sheets from the two countries continue to melt at this rate they will cause an extra 17 centimetres of sea level rise by the end of the century, risking annual coastal flooding 400 million people
  • Much of Greenland’s ice losses a result of rising air temperatures and the amount of melt is expected to rise

The Climate Center’s Rapid Decarbonization Campaign sets a goal that by 2025, California will have enacted the bold, accelerated policies required by science to double emissions reductions, accelerate drawdown, and secure resilient communities by 2030.


Read More: http://www.esa.int/Applications/Observing_the_Earth/Space_for_our_climate/Greenland_and_Antarctica_losing_ice_six_times_faster_than_expected

One of Antarctica’s fastest-shrinking glaciers just lost an iceberg twice the size of Washington, D.C.

By Brandon Specktor, Live Science


Highlights:

Pine Island Glacier, one of the fastest-shrinking glaciers in Antarctica, broke off chunks of ice in an event known as “calving,” just days after the region hit it’s all-time highest temperature.

  • Calving, the breaking of ice away from the edge of glaciers, has become a nearly annual occurrence for the Pine Island Glacier and the neighboring Thwaites Glacier near the Antarctic Peninsula
  • The icebergs measure more than 130 square miles, double the size of Washington, D.C.
  • When the ice melts, it is believed that the melt will not contribute to large amounts sea level rise since ice at the edge of the glacier was already floating

The Climate Center’s Rapid Decarbonization Campaign addresses the urgency of the climate crisis by setting a timeline in line with the current science.


Read More: https://www.livescience.com/pine-island-glacier-calving-retreat.html