The world faces total collapse; The consequences will be catastrophic PHOTO/VIDEO

The world’s largest glacier is melting significantly faster than scientists had predicted, and a new study suggests that its contribution to global sea-level rise could be twice as great as previously estimated.

According to CNN, scientists have now developed a more accurate model, based on new findings, that describes the processes taking place beneath the ice.

As Index reports, the Thwaites Glacier, located in West Antarctica, remains a major uncertainty in forecasts of sea-level rise.

Due to the catastrophic consequences its collapse could trigger, it has earned the nickname “the Doomsday Glacier.”

The glacier is roughly the size of Florida and is located in one of the most inaccessible places on Earth. However, it has been shrinking for decades, and its melting is already responsible for around 4% of global sea-level rise.

If it were to collapse completely, the Thwaites Glacier contains enough ice to raise sea levels by more than 60 centimeters (approximately 2 feet).

Because it also acts as a natural barrier holding back a vast Antarctic ice sheet, its disappearance could eventually lead to a sea-level rise of approximately three meters.

Such a scenario would have devastating consequences for coastal communities around the world, from Miami to Manila.

The crucial role of the Grounding Zone

Glaciologists from the University of California and NASA’s Jet Propulsion Laboratory (JPL) have developed a new model that, they say, more accurately reflects the actual conditions beneath this ice giant.

The rapid retreat of the Thwaites Glacier is driven by processes occurring at its grounding line—the point where the ice detaches from the seabed and begins to float.

Previous models generally treated this grounding line as fixed and stable.

Satellite data now reveal that the “grounding line” is not actually a line, but rather a grounding zone that can extend for several kilometers. Seawater continuously flows into and out of this zone with the tides.

This process, known as “tidal pumping,” causes the thick layer of ice to rise and fall. In turn, this allows relatively warm ocean water to penetrate deep beneath the ice shelves, causing substantial melting.

The consequences may have been underestimated

When scientists adjusted their models to incorporate the concept of a grounding zone, they found that the Thwaites Glacier could contribute up to three centimeters to global sea-level rise by 2100.

That is twice as much as previous estimates, even without further global warming, according to a study published in the journal Nature Communications.

The report further states that the bedrock beneath the Thwaites Glacier slopes downward toward the interior of the continent, meaning that melting exposes an increasingly large area of ice to warm water.

The situation is somewhat stabilized by two underwater ridges that slow the flow of ice into the ocean.

However, the study found that processes in the grounding zone are accelerating the detachment of ice from the larger Mouginot Ridge.

There is now a 60% chance that the ice will become completely detached from the ridge by the end of the century, after which the glacier could retreat rapidly.

The findings also indicate that the risk of coastal flooding in the coming decades is greater than previously expected.