The world’s ice sheets just got a dire prognosis, and coastlines are going to pay the price

The ice sheets in the world are on their way Meluan fleeingWhich leads to Multiple feet from sea level rise The “catastrophic” migration is far from the coasts, even if the world starts from the miracle and keeps global warming within 1.5 degrees, according to a new research.

A group of international scientists has begun to determine the “safe limit” of global warming for the ice sheets in Greenland and the Southern Pole staying. They distributed studies that took data from satellites, climate models and evidence from the past, from things such as ice cores, depths of the seas and even the DNA of octopus.

What they found drew a terrible picture.

The world pledged to restrict global warming to 1.5 degrees above pre -industrial levels to avoid the most catastrophic climate change.

However, not only this limit Speed ​​out of reach – The world is currently on the right track for up to 2.9 degrees of warming by 2100. But the most anxious result of TicketIt was published on Tuesday in the Communications Earth and Environment magazine, that 1.5 may not be good enough to save ice sheets.

Even if the world maintains the warming level today, at 1.2 degrees, it may still be due to the decline in the rapid ice cover and the catastrophic level of the catastrophic level.

Greenland ice sheets and the southern pole are committed to enough fresh water to raise the levels of the global sea surface by about 213 feet – an unlikely scenario but must be recognized to completely understand the risks.

Since the 1990s, the amount of ice they lost was quadruple; They are currently losing about 370 billion tons annually. The melting of the ice is the dominant contributor to the rise in the seas and the increase in the annual sea level level has doubled over the past thirty years.

It is scheduled to get worse.

Multiple studies indicate that 1.5 degrees of warming are “very high” to prevent the irreversible ice cover that is irreversible on human time domains, and the world must prepare for several feet of sea level rise over the coming centuries, according to the study.

“Do not slow down the sea level at 1.5, in fact, you see a very rapid acceleration,” said Chris Stokes, a study author and an ice cream specialist at Durham University.

It is an existential threat to the coastal population in the world. About 230 million people live less than 1 meters (3.2 feet) above sea level. The study found that the small changes in the amount of ice preserved in the ice sheets will lead to “changing the global coast”, which replaces hundreds of millions of people and causes the limits of adaptation.

Scientists have found that the seas could rise by 0.4 inches annually by the end of the century, within the life of young people now.

At this level, which is equivalent to 40 inches in the century, “you will see huge land migration on the standards that we have never seen since modern civilization,” said Jonathan Pamper, author of the study and ice specialist at the University of Bristol.

There are still huge uncertainty about where the turning points lie. The way climate change is not written, and it is not clear when warming may lead to a rapid decline and even collapse.

The authors of the study says that what raises great attention is that the best “safe” temperature sills estimates to provide ice sheets continue to decrease as scientists understand their weakness in climate change.

Early modeling suggested temperatures to reach about 3 degrees of warming to destabilize the ice cover in Greenland, for example, but recent estimates indicate that it will take about 1.5 degrees.

To avoid the rapid collapse of one more than the ice leaves means reducing global warming to one degree higher than pre -industrial levels, and the authors of the study concluded.

This will require radical discounts for the amount of fossil fuels that humans are burning, which seems unlikely exceptionally as countries continuing, including the United States Embrace oil, coal and gas.

Stoxus said that the world has already begun to see some of the worst scenarios they play in terms of ice loss.

“There is very little, we notice that this gives us hope here,” he said. He added: “The best absolute scenario is that sea level rise is slow and fixed.”

Stoxus said that the results do not mean that the world should abandon climate goals, because each part of a degree of warming translates into worse effects.

“Reducing warming to 1.5 will be a big achievement. Our goal must be at all, but in no way slows or stops sea level rise and melts ice sheets.”

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