Sea Level

First Methane Leak Found on Antarctic Sea Floor Confirms Researchers' Fears <p>The microbes aren't helping.</p> Sinead Baker, Business Insider ScienceAlert

Scientists have, for the first time, discovered an active leak of methane gas from the sea floor in Antarctica. It is a process that's likely to accelerate the process of global heating.

Icebergs off coast of Greenland. - Credit: Kertu / Adobe Stock

CLICK HERE - STUDY - PNAS - Ice sheet contributions to future sea-level rise from structured expert judgment

cnn.com - by Sareena Dayaram - May 21, 2019

Global sea levels could rise more than two meters (6.6 feet) by the end of this century if emissions continue unchecked, swamping major cities such as New York and Shanghai and displacing up to 187 million people, a new study warns.

The study, which was released Monday, says sea levels may rise much faster than previously estimated due to the accelerating melting of ice sheets in both Greenland and Antarctica.

The international researchers predict that in the worst case scenario under which global temperatures increase by 5 degrees Celsius (9 degrees Fahrenheit) by 2100, sea levels could rise by more than two meters (6.6 feet) in the same period -- double the upper limit outlined by the UN climate science panel's last major report.

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PACK ICE MELTING IN SPRING IN ANTARCTICA'S WEDDEL SEA. CREDIT: PLANET OBSERVER/UNIVERSAL IMAGES GROUP VIA GETTY IMAGES

The faster the ocean warms, the faster key Antarctic glaciers will disintegrate.

CLICK HERE - STUDY - Four decades of Antarctic Ice Sheet mass balance from 1979–2017

thinkprogress.org - by Joe Romm - January 15, 2019

A stunning new study on Antarctic sea ice collapse greatly raises the risk of a 10-foot sea level rise this century if President Donald Trump’s climate policies aren’t quickly reversed.

Warming ocean waters drove a 6-fold increase in annual ice mass loss from the Antarctic ice sheet between 1979 and 2017, according to a new study in the Proceedings of the National Academy of Sciences.

It’s been known for a while that the West Antarctic Ice Sheet (WAIS) was unstable and collapsing at an accelerating rate due to global warming. But the new study finds that parts of the vastly larger East Antarctic Ice Sheet (EAIS) are also disintegrating.

How South Beach, Miami, could look if temperatures rise by 2C. Photograph: Nickolay Lamm/Courtesy of Climate Central/sealevel.climatecentral.org

As the UN sits down for its annual climate conference this week, many experts believe we have passed the point of no return

theguardian.com - by Robin McKie - December 2, 2018

On Sunday morning hundreds of politicians, government officials and scientists will gather in the grandeur of the International Congress Centre in Katowice, Poland . . . For 24 years the annual UN climate conference has served up a reliable diet of rhetoric, backroom talks and dramatic last-minute deals aimed at halting global warming . . .

. . . As recent reports have made clear, the world may no longer be hovering at the edge of destruction but has probably staggered beyond a crucial point of no return. Climate catastrophe is now looking inevitable.

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