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Nearing the doomsday: Rising sea levels drowning metropolitan cities of the world

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New Delhi: According to a report recently published which looks toward the ice sheets of Antarctica, the alarming rise in the sea levels can be responsible for the drowning of major coastal cities.

The study suggests the aftermath can manifest into an increase of a three feat rise in the sea levels by the end of this century. Though it is reported that the low-lying cites as New York and Hong Kong will be at the downside, the authors are most concerned about metropolises like that of Boston, which are vulnerable to face an over five feet extension of the sea levels at the close of the coming century.

The Climate Change Summit, which has held last year in Paris, had the prominent leaders of the world pledging to cut the carbon greenhouse gas emissions and keeping the surge of global warming under the mark of 2 degrees Celsius.

Unfortunately, Pollard and DeConte in their report write that upon the evaluation of the data, it can be said that the final conclusions are overriding the predictions made by the Intergovernmental Panel on Climate Change. And apparently, those were considered, till recently as the worst-case scenario affecting our planet.

By 2100, there can be a rise of about two meters upon melting of ice in the poles. Pollard, opines that the probable effects to follow this will be something like the hazardous form of Hurricane Sandy, one which will have the potential to contribute to future flood losses.

Both Pollard and DeCante says that the rise in the sea levels will be accounting to an estimate of nearly 50 meters in Antarctica alone, and all of these will be taking place by 2500. While the latter is of the opinion, as given in an interview, that the global warming will be trapping the coastal cities and the defense mechanisms will be proven to be ineffective then.

Still, the calling of the doomsday can be countered, as stated by DeConte by curtailing the dangerous emissions and keeping the Antarctica, well frozen.

(Inputs from huffingtonpost.com)

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Greenland’s Ice Melting Faster Than Expected: Study

Researchers say the accelerated ice loss is caused by a combination of global warming, as well as the North Atlantic oscillation.

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Greenland
The Greenland ice sheet is seen in southeastern Greenland, Aug. 3, 2017. VOA

Ice in Greenland is melting faster than previously thought, according to a new study published in the Proceedings of the National Academy of Sciences.

The study found that most of Greenland’s rapid ice depletion is from a surprising source — land that is largely devoid of glaciers.

The land in question is from Greenland’s ice sheet itself, which is 10,000 feet thick in places.

Scientists previously focused most of their studies on Greenland’s glaciers, in the southeast and northwest regions of the country, and found that the glaciers have increasingly been dislodging chucks into the ocean.

However, scientists in the newly published study say they realize there is another major source of ice melt, in the country’s southwest region, which is mostly devoid of large glaciers.

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FILE – An iceberg is seen melting off the coast of Ammasalik, Greenland, July 19, 2007. VOA

They say this suggests that the surface ice is simply melting as global temperatures rise.

“We knew we had one big problem with increasing rates of ice discharge by some large outlet glaciers,” said Michael Bevis, lead author of the paper and a professor of geodynamics at Ohio State University. “But now we recognize a second serious problem — increasingly, large amounts of ice mass are going to leave as meltwater, as rivers that flow into the sea.”

Researchers say the ice rate loss across Greenland has increased four-fold since 2003, which they say will lead to a greater sea level rise.

In the 20th century, Greenland has lost around 9,000 billion tons of ice in total, causing about 25 millimeters (1 inch) of sea level rise, according to National Geographic.

Scientists say if all of Greenland’s vast ice sheet were to melt, global sea levels would rise by 7 meters (23 feet) , flooding most coastal developments around the world.

Personnel stand aboard the Finnish icebreaker MSV Nordica as it arrives into Nuuk, Greenland, after traversing the Northwest Passage through the Canadian Arctic Archipelago, July 29, 2017.
Personnel stand aboard the Finnish icebreaker MSV Nordica as it arrives into Nuuk, Greenland, after traversing the Northwest Passage through the Canadian Arctic Archipelago, July 29, 2017. VOA

The latest study used data from NASA satellites, as well as GPS stations across Greenland, to analyze changes in ice mass.

Also Read: New Technology That Can Clean Water Twice As of Now

Researchers say the accelerated ice loss is caused by a combination of global warming, as well as the North Atlantic oscillation, a periodic weather phenomenon that brings warmer air to western Greenland.

Greenland’s much larger neighbor, the Antarctic ice sheet, is also losing ice faster than previously thought, according to a recent study in the Proceedings of the National Academy of Sciences. That study, published earlier this month, found that Antarctic melting has raised global sea levels 1.4 centimeters between 1979 and 2017. (VOA)