A new study suggests the loss of the Pacific Ocean’s glaciers could bring a sea level rise of 20 metres by 2100.
It suggests the Philippines could be one of the most vulnerable areas in the world to sea level rises of more than five metres.
The study, by researchers from the University of New South Wales, Australia, and the Australian National University, found that in 2080, the Antarctic ice sheet would be gone, leaving just a small patch of ocean.
This patch of water, the study said, would have a minimum thickness of around 1.5 metres, meaning the ice would be at least three times thinner than the Antarctic land mass.
That would leave only a few metres of sea-level rise, about half of which would be felt by the densely populated coastal areas, which would become submerged by rising sea levels, said lead author David Schlosser.
In this picture from a NASA satellite image, the Greenland ice sheet in summer.
The study, published in the journal Nature Climate Change, found the loss could result in an increase in sea level of 10 metres by the end of the century.
But the researchers also found there could be an offsetting effect, with a decline in the ice sheet, but no sea level change.
They said there could also be some benefits to the oceans, including a reduction in the amount of heat absorbed by the ocean, which in turn could reduce sea level.
For example, a warmer sea could lead to more rain and runoff, the researchers said.
The researchers analysed the data from satellite data from 1995 to 2021 and found the Antarctic Peninsula was a hotspot for ice loss.
Its ice was already starting to melt from the surface, they said, and had a cumulative loss of nearly five million square kilometres in that time.
This meant that its area would be about three times larger by the time the ice melted.
By 2100, the area would have shrunk to just 1.4 million square kilometers, meaning that by the year 2100, there would be just one square kilometre of ocean to cover.
This is the first study to analyse the cumulative loss in the Antarctic and found that the average loss rate was only a little less than one metre per decade, with only a small, but significant, contribution from the Greenland melt.
“It’s not surprising that when we look at the ocean the ice is melting,” said study co-author Professor Christopher Taggart, who works at the University.
There’s no evidence for that happening elsewhere in the planet, and that’s a problem.
It’s very important to understand why this is happening in the ocean.
It’s going to be a very interesting time,” he said.”
What is happening is really dramatic and it’s a challenge to predict what will happen.
“Scientists also said it was important to keep an eye on the sea level in the Pacific, where the ice sheets are melting rapidly, as it could play a role in triggering more rapid sea level changes.”
If there is a lot of melt and we’re seeing a lot more sea level going up in the future, then the Antarctic is a very good place to look for sea level,” said Taggard.
More:A similar study by the Australian and New Zealand governments found the Pacific would see an increase of 2.8 metres by 2080 if sea levels rise as predicted by the Intergovernmental Panel on Climate Change (IPCC).
But the authors said the impacts could be even more severe in the tropical Pacific, which is warming much faster than the rest of the world.
If it happened there, it would be worse than if it happened elsewhere, and could bring the entire Pacific to a rapid sea-rise, they wrote.