Antarctica’s ‘Doomsday Glacier’ Is Melting at an Alarming Rate: Who’s Most at Risk?

A glacier known as Thwaites, or as scientists ominously call it, the “Doomsday Glacier,” ¹ threatens to submerge us in water.

If Thwaites retreats completely, we’re not just looking at a minor change in sea levels; we’re facing an increase of at least 60 centimeters globally.

But the real fear is that this could trigger a domino effect, leading to several meters of sea level rise, putting vast regions underwater.

Miami’s King Tides

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Image Credit: Felix Mizioznikov/Shutterstock.

In the sun-soaked streets of Miami, the future is lapping at residents’ doorstep. The city, known for its vibrant life and picturesque beaches, is now becoming a case study for the impacts of rising sea levels.

Scientists like Tiffany Troxler ² are on the front lines, measuring the effects of king tides ³, exceptionally high tides that have become four times more common in the last 15 years. These tides are not just a nuisance; they’re a harbinger of what’s to come, with projections showing city blocks inundated by 2040 ⁴ and entire neighborhoods underwater by 2065.

The recent king tide, one of the highest in years, left parts of South Florida impassable, signaling a more significant event than previously observed.

As sea levels rise, these tides, predicted years in advance, are supercharged, turning today’s extreme tides into tomorrow’s norm.

The Silent Crisis of Climate Gentrification

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Image Credit: Felix Mizioznikov/Shutterstock.

While the wealthy can easily escape the rising tides, residents of Miami’s Little Haiti are confronting a different storm: climate gentrification ⁵. This once-affordable enclave is now a magnet for high-income investors seeking refuge from flood risks due to being positioned ten feet above sea level.

As a result, property values have soared by about 19% ⁶ since 2016, displacing long-standing community members.

This shift isn’t merely a change of address; it’s an erosion of a vibrant cultural heritage built over decades by Haitian immigrants who overcame racial and economic barriers.

Now, as sea levels threaten to reshape the city, Little Haiti’s unique character and the very fabric of its community are at risk, echoing a broader narrative of climate-induced displacement seen in places like New Orleans post-Katrina.

Understanding the Urgency

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Image Credit: fizkes/Shutterstock.

Scientific evidence is unequivocal: glaciers like Antarctica’s Thwaites ⁷ are melting at an alarming rate ⁸, potentially precipitating a catastrophic rise in sea levels.

Researchers have unveiled that while overall melting is slower than anticipated, the rapid disintegration in the glacier’s cracks and crevasses is a grave concern ⁹.

These vulnerable points, where warm, salty water acts as a blowtorch, melt swiftly, threatening to destabilize the entire ice mass. The Thwaites Glacier’s grounding zone has already retreated significantly, and the discovery of terraces, areas of accelerated melting, underscores the urgent need for action.

This isn’t merely a distant threat; it’s a present-day crisis demanding an immediate global response.

What Happens If Sea Levels Rise 60 Centimeters?

If the world faces an increase in sea levels of at least 60 centimeters globally, a wide range of regions and populations would be at risk. Here are some of the key groups and areas that would be most affected:

  1. Coastal Cities and Communities: Cities on coastlines around the world would be at a high risk of flooding. This includes major global cities like Miami, New York, Bangkok, Jakarta, Tokyo, and Amsterdam, where rising sea levels could inundate parts of these cities.
  2. Small Island Nations: Nations such as the Maldives, Tuvalu, the Marshall Islands, and other low-lying island countries could face existential threats, with some of their land potentially becoming uninhabitable or completely submerged.
  3. Low-Lying Regions and Deltas: Areas like the Ganges-Brahmaputra Delta in Bangladesh, the Nile Delta in Egypt, and the Mekong Delta in Vietnam would be particularly vulnerable to flooding and erosion, affecting millions of people.
  4. Agricultural Lands: Coastal agricultural lands, particularly in low-lying delta regions, could be ruined by saltwater intrusion, impacting food production and local economies.
  5. Ecosystems and Wildlife: Coastal and marine ecosystems, including mangroves, coral reefs, and wetlands, would be adversely affected. This would have cascading effects on wildlife, fisheries, and biodiversity.
  6. Economic Impact: The economic consequences would be significant, affecting industries like tourism, fisheries, and real estate. Infrastructure such as ports, airports, and road networks in coastal areas would also be at risk.
  7. Displacement and Migration: There would be a significant human toll, with potentially millions of people being displaced from their homes, leading to issues related to climate refugees and increased pressure on urban areas further inland.
  8. Public Health Risks: Increased flooding and changes in environmental conditions could lead to ¹⁰ higher risks of waterborne diseases and other health issues.
  9. Cultural Heritage: Cultural heritage sites located in coastal regions would be at risk of damage or destruction.

A Choice Between Action & Apathy

The question now is not whether climate change is happening but how bad we will let it get. Limiting global warming to 1.5 degrees Celsius ¹¹ is not just ideal but essential to avoid catastrophic changes.

Our current trajectory and decisions are pivotal; they will dictate whether our future is managed adaptation or a spiral into relentless and severe climate emergencies.

The urgency is underscored by the fact that even half a degree beyond this threshold could significantly increase the frequency and intensity of extreme weather events, impacting millions more people. The path we choose now is critical to safeguarding our planet’s future.

Your Voice In the Climate Conversation

As the seas rise, so does the need for a global conversation and action.

Whether you’re living in an area already feeling the effects of climate change or one that’s yet to see the impacts, your voice matters.

The challenge is immense, but the opportunity for change is even greater. Can we unite to keep warming under the critical threshold, or are we destined for a warmer, more volatile world? The time to decide and get involved is now.


Martha A. Lavallie
Martha A. Lavallie
Author & Editor | + posts

Martha is a journalist with close to a decade of experience in uncovering and reporting on the most compelling stories of our time. Passionate about staying ahead of the curve, she specializes in shedding light on trending topics and captivating global narratives. Her insightful articles have garnered acclaim, making her a trusted voice in today's dynamic media landscape.