NASA Studies Find Previously Unknown Loss of Antarctic Ice

New research on Antarctica, including the first map of iceberg calving, doubles the previous estimates of loss from ice shelves and details how the continent is changing. NASA: The greatest uncertainty in forecasting global sea level rise is how Antarctica’s ice loss will accelerate as the climate warms. Two studies published Aug. 10 and led…

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…

Study: Interacting tipping elements increase risk of climate domino effects under global warming

The study, “Interacting tipping elements increase risk of climate domino effects under global warming” by Nico Wunderling, Jonathan F. Donges, Jürgen Kurths, and Ricarda Winkelmann from the Potsdam Institute finds potential severe consequences from continued climate change. The Guardian has a study breakdown, which can be accessed here. Analysis shows significant risk of cascading events even at 2C…

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…

Any reduction in emissions means shorter open-water periods

A new study be the University of Manitoba, finds that for every degree of global warming, the open water period in the Arctic will increase by roughly one month. The study, Arctic open-water periods are projected to lengthen dramatically by 2100 – published in the Nature journal Communications Earth & Environment, notes: The shrinking of Arctic-wide…

Scientists Detect Signs of Abrupt Climate Shift in Arctic

Ice cores obtained years ago document an ominous rise of temperatures, abrupt change manifesting just within a few decades. First scientists thought this must be an error, but slowly they realize what it could mean for us today. Research into the polar ocean, found, it is getting hotter at a rate faster than even the worst…

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…