Antarctica and Paris Goals: Risks of Massive Sea-level Rise

Recent published research shows the danger of massive, potentially irreversible, global sea-level rise within the next couple of centuries should temperatures overshoot 2°C. Perhaps most sobering, this loss may become rapid and permanent, with no halt in ice loss even should CO2 concentrations return t pre-industrial levels; and rates approaching 5 cm/year by 2150, and…

Thwaites Glacier Antarctica

Thwaites Glacier: Antarctica’s doomsday glacier could become unhinged this very decade.

At the fall 2021 meeting of the American Geophysical Union on 13 December, a presentation on the latest for the Thwaites Glacier (also dubbed the Doomsday Glacier) highlighted processes at the ice shelf of the glacier, which will likely result in dramatic changes within 10 years. Meaning, acceleration of ice discharge into the Ocean, and…

Eric Rignot: Sea level rise there is a distinct possibility it could go faster

We interviewed Eric Rignot, Donald Bren Professor and Chancellor Professor of Earth system science at the University of California, Irvine and Senior Research Scientist for the Radar Science and Engineering Section at NASA’s Jet Propulsion Laboratory. The 6th IPCC Report and Sea Level Rise Chris Machens: Hello Eric, back in 2015 I’ve asked you about…

Discovery: Process of ice mélange thinning suggests Antarctica’s ice-shelves could retreat Decades Earlier

Ice shelves buttress glaciers – a new mechanism involving rift dynamics suggests ice shelfs could retreat faster than previously modeled. SciTechDaily: “The thinning of the ice melange that glues together large segments of floating ice shelves is another way climate change can cause rapid retreat of Antarctica’s ice shelves,” said co-author Eric Rignot, UCI professor…

Audio: Overshooting 2C risks rapid and unstoppable sea level rise from Antarctica

CarbonBrief recently published a guest article by Robert M. DeConto, Pamela Pearson, and David Pollard, called Overshooting 2C risks rapid and unstoppable sea level rise from Antarctica. Here is now a text-to-speech conversation for people who like to listen to it. Visit Overshooting 2C risks rapid and unstoppable sea level rise from Antarctica to follow…

The Denman Glacier and Shackleton Ice Shelf

Significant changes have taken place on Denman Glacier and Shackleton Ice Shelf. The floating section of the glacier experiences vigorous ice melt in contact with the ocean, which suggests the presence of Circumpolar Deep Water. However, there is no historical oceanographic data near the glacier. https://www.pnas.org/content/116/4/1095 Denman Glacier, located in East Antarctica retreated about 5…

The Doomsday Glaciers in East Antarctica | Earth Under Water

A new study suggests that the East Antarctica Ice Sheet in the Wilkes Basin may have completely disappeared around 400,000 years ago. Currently the Wilkes Basin is only hold back by the Cook, Mertz, and the Ninnis glacier – the Cook Glacier shelf has already collapsed. There is also the Totten Glacier farther to the…

Antarctic & Greenland Melt Accelerates Sea Level Rise

In this talk from October 2019, Eric Rignot suggests the possibility of 4 meters of sea level rise per century. Just extrapolating based on Antarctic marine glaciers retreating would yield the figure Notes a new model with results in the ballpark Notes the figure is in agreement with past sea level rise estimates Not mentioned…

Methane Release Discovery in Antarctic Ocean

Andrew Thurber, Oregon State University on his research on methane seeps, and his studies on Cinder Cones in McMurdo Sound, Antarctica. REF AltaSea at the Port of Los Angeles: Video Chat with Dr. Andrew Thurber https://www.youtube.com/watch?v=ggDv1PjJX1I First active leak of sea-bed methane discovered in Antarctica https://www.theguardian.com/environment/2020/jul/22/first-active-leak-of-sea-bed-methane-discovered-in-antarctica NSF: Methane Munching Microbes https://antarcticsun.usap.gov/science/4310/ Methane GWP https://www.sciencedirect.com/topics/earth-and-planetary-sciences/global-warming-potential and…