
The “Doomsday Glacier”
Bad news at the bottom of the planet
The Thwaites floating Ice shelf glacier in Antarctica is the size of Florida.
Neither land ice nor sea ice, it holds enough frozen fresh water to raise coastal water levels up to 2 feet if it all of it were to melt.
But that’s not why it’s called (for better or worse) the Doomsday Glacier. As a hybrid coastal ice shelf, the Thwaites acts as a cork that blockades the rim of the West Antarctic ice sheet. If all of the ice in the interior behind the shelf were to melt, sea levels would rise up to 10 feet. That is unlikely to happen in the near future, but the scenario is now on the table as global warming accelerates.
New research shows warming water beneath the ice shelf
A recent Dutch study indicates that Twaites is likely to contribute twice as much water to sea level rise as previously projected. The study is based on the discovery that the grounding zone where the shelf rests on the sea bed is not stable (see diagram). As it bobs under wave influence, warm water pushes pushes the glacier, creating cracks and vast channels that in turn trigger further melting.
According to the study published in Nature Communications, author Mattia Poinelli says previous simulations have not taken this scenario into account. The new study helps explain the previous variation between observed behavior and satellite images. This process is a climate feedback loop, which means there is little probability it will reverse within a human time span.


Three decades of melt felt around the world
THINK OF IT LIKE THIS: THE THWAITES ACCOUNTS FOR THE RECENT COLLAPSE OF OBX COASTAL REAL ESTATE
Thwaites contributes about 4 percent to sea level rise, which over the past three decades amounts to about 4 inches. The new model shows that Thwaites will add another inch or so of sea level rise by the end of the century. Again, that’s just the ice contained in the Thwaites formation, and it assumes warming will continue at the current rate.
That projections double the estimate from previous models. In real world terms, that quantity corresponds to the rampant sea level rise that has sent 30 homes in North Carolina crashing into the Atlantic in the past 6 years.

Yes, this really is a doomsday feedback
Thwaites acts as a brake holding back the land based ice sheet on the continent. As Thwaites deteriorates, incalculable amounts of frozen fresh water is exposed to warmer ocean waters. creating a classic feedback loop. If Thwaites were to succumb entirely, the whole interior of the sheet might follow suit, raising sea levels by as much as 10 – 15 feet over time.
“These results show that past changes in ocean-driven melting have now committed us to unavoidable future ice loss from Thwaites Glacier. This ice loss cannot be undone or prevented by simply cooling the ocean.”
Dr Rosie Williams, lead author glaciologist, British Antarctic Survey.
New research led by British Antarctic Survey (BAS) has found that Thwaites Glacier will continue losing ice for at least the next 150 years, even under the extreme ocean cooling conditions.
More to think about – It’s all about the ice
The most recent developments regarding Thwaites Glacier and its companion Pine Island are alarming in their own right. This feedback loop is already irreversible. It’s isn’t hard to grasp as far as the basic facts go: The ice loss is caused by the ocean melting the glaciers’ floating ice shelves, leading to thinning and retreat of the glacier further inland. That could add multiple feet to sea levels over the next decades. BUT IT’S JUST ONE COMPONENT. Please take the time to read this summary of how global ice in all it’s forms is the key to the global warming crisis.

AUTUMN 2026 CLIMATE EVENTS

A partial update on catastrophic floods, drought and violent weather.
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