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New study finds the green ice sheet that loses ice at a worrying pace

Since 1972, green ice has lost the equivalent of a trillion tonnes of fresh water from its ice cream shops, increasing global sea levels by a quarter inch in just eight years and accelerating the rate of ice loss Trillion tonnes of ice lost from threatened Greenland ice [19659003] According to research published this week in the journal The Proceedings of the National Academy of Sciences ice sheets are even worse and more frightening than previously understood.RELATED: GLOBAL REPORT IS LESS IS 12 YEARS TO APPLY CLIMATE CHANGES Use of data going back to another 20 years than included in our current models, Amount of fresh water ice lost by Greenland disc since 1 972 amounts to trillion tons ice melting to the sea. Specifically, it has lost 4,976 gigatons of water since 1972. A gigaton corresponds to 1 billion tonnes, which means that on average enough water has melted out of Greenland's ice sheet every year to be able to deliver the current water needs of New York City or Los Angeles for a century. Unfortunately, the ice loss has not been evenly spread during this period. Instead, the rate of loss has accelerated, with half the ice loss occurring in the last decade. The speed at which glaciers move the mass of ice into the oceans is almost double that of the 2000s. Greenland's ice sheet shows how serious the crisis we are facing Robinson Meyer's latest report in the Atlantic on the recently released research provides an…

Since 1972, green ice has lost the equivalent of a trillion tonnes of fresh water from its ice cream shops, increasing global sea levels by a quarter inch in just eight years and accelerating the rate of ice loss

Trillion tonnes of ice lost from threatened Greenland ice [19659003] According to research published this week in the journal The Proceedings of the National Academy of Sciences ice sheets are even worse and more frightening than previously understood.

RELATED: GLOBAL REPORT IS LESS IS 12 YEARS TO APPLY CLIMATE CHANGES

Use of data going back to another 20 years than included in our current models, Amount of fresh water ice lost by Greenland disc since 1

972 amounts to trillion tons ice melting to the sea.

Specifically, it has lost 4,976 gigatons of water since 1972. A gigaton corresponds to 1 billion tonnes, which means that on average enough water has melted out of Greenland’s ice sheet every year to be able to deliver the current water needs of New York City or Los Angeles for a century.

Unfortunately, the ice loss has not been evenly spread during this period. Instead, the rate of loss has accelerated, with half the ice loss occurring in the last decade. The speed at which glaciers move the mass of ice into the oceans is almost double that of the 2000s.

Greenland’s ice sheet shows how serious the crisis we are facing

Robinson Meyer’s latest report in the Atlantic on the recently released research provides an adequate understanding of the size of the green Icelandic sheet and what we risk to release if we do not reverse the ice loss .

If Greenland’s southernmost tip covered the southernmost city of Texas, Brownsville, the northern tithe of the ice would reach all the way into the province of Manitoba, Canada, with its eastern reach extending to St. Louis, Missouri and its northwestern reach into Montana.

The midpoint would be near Des Moines, Iowa and would be nearly two miles thick. 65 million people would be crushed under, about one fifth of the American population, but it is largely a function of the state’s inner regions that are less populated than the coastal cities, where large population centers live.

With enough fresh water to fill the North American large lakes more than 100 times, the entire melting of the Greenland disc would add 24 meters to the global sea level. Even ten meters of sea water rise threatens New York City, much of Florida, and hundreds of other US cities alone.

Miami gives a preview of our climate future

Here in the US, there is a growing awareness that the city of Miami may have to be abandoned within the century. Sitting on a limestone bedrock, efforts to build sea walls around threatened areas will nothing to stop the water, which simply sucks through the limestone like a sponge and comes up on the other side.

Right now, Miami is already experiencing flooding when it experiences a great rain and the city is competing to lift the roads at least two meters above the high water course and requires that new construction rests at least one foot above this row. Existing construction will need to be connected to a pumping net to regulate the flooding that creases over these higher bulwarks towards the seas. All of this comes at the expense of hundreds of millions of dollars for the city of Miami Beach alone.

“There are only 3 percent of Miami-Dade County greater than 12 feet above sea level,” said Harold Wanless, director of the University of Miami’s Geological Department and an expert on rising sea levels and its implications. “With sea levels rising over a foot per decade, it’s over.” At the end of the century, the entire county that includes Miami will be functionally unsaved, and they are not alone.

Of the 40 large cities where more than half of their area is located ten meters above sea level or less, 27 of them are in Florida alone. In New York City, 700,000 current residents will be underwater at a ten foot sea level rise. Hundreds of cities in the United States alone will be directly affected by an increase in sea level of ten meters, which is now guaranteed due to the collapse of the West Antarctic ice. The only question now is how quickly we will experience that upswing.

With the acceleration that exists in Greenland, the same is likely to happen in Antarctica, which together holds about 200 meters of seawater elevation between them. As the melting rate of these two endangered water ice stores accelerates, it ensures that the consequences of human-induced climate change will no longer be a crisis for the distant future, but place that crisis entirely into the lifespan of those currently living. It makes it a problem that only the current generation can solve.

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