The most significant deposits of the Arctic sea-ice is fast disappearing. (Credit: NOAA)
After the climate change is melting the Arctic Ocean’s year-round ice-cover, only the region’s oldest, thickest ice and will continue to be … or is it? In a new study with a dire warning that even the ice cream is in danger.
Known as the “Last Ice Area” in this frozen zone that extends for more than 1,200 miles (2,000 kilometers) of Greenland’s northern coast in the western part of the Canadian Arctic Archipelago. The perennial ice is here for at least 5 years older than in the neighboring regions, and measures about 13 feet (4 meters) thick.
However, the older, more robust, sea-ice, it is not as stable as once thought, and it’s disappearing much faster than expected. In fact, in the Last ice age, the Area fades about twice as fast as in the Arctic, the younger and thinner ice at the sea, the researchers reported in a new study.
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A lot of the ice in the western Arctic is a first-year ice ” — ice that is no more than a 1-year-old, said lead study author Kent Moore is a physics professor at the University of Toronto Mississauga.
“The ice in the central Arctic is between 2-and 3-year-old, and the old ice in the Last ice Area,” Moore told Live Science.
The sea-ice cover in the Arctic grows and shrinks with the seasons, but in the last few years, more and more the spread of ice, both in winter and in the summer months. By 2019, the Arctic sea ice reached its maximum on March 13, spanning some 6 million square miles (15 million square miles). To that extent, it is even lower than that of the majority of the 40 in the previous year, according to the National Snow and Ice Data Center (NSIDC).
The arctic sea-ice coverage by 2019 is achieved, the lowest on the 18th of September. A 1.6-million-square-kilometer (4-million-square-km) coverage by 2007 and 2016, with the second lowest since the 1970’s, NASA reported.
The forecast is for ice in the Arctic is in a warming world, it is grim. Climate models predict that most of the ice of the Last ice age, the Area was to disappear for good in the next couple of decades, with the leave of the Last ice age, the Area, as the only refuge for the marine life that depend on ice, such as seals, polar bears, and blue green algae, Moore said.
“By the year 2060, the north Pole will be what other people define it as being ice-free, which is a region of eternal ice, with less than 1 million square kilometers [386,102 square miles. And a lot of ice in the Last ice Area,” he said.
This is ice cream, it was thought for a long time, to be idle, to collect, without a loss and locked up in a location where it will not be disturbed by the wind and ocean currents. For the first time, scientists have watched in the Last ice age, the Area, with a model that has taken over the local ice cream life-cycle, using satellite and atmospheric data from 1979 up to and including 2018. The authors of the study found that the region is much more dynamic than previously assumed, and the immense quantities of ice were carried in the ocean.
“What we’ve found is from year to year, the ice thickness can change by about 1 meter [3 feet],” Moore said. The average ice thickness is about 10 to 13 feet (3-4 m), although in some years it was less than 10 feet (3 m), and in other years it was more than 16 feet (5 m). And when the ice is thinner, that is done more often — it is very easy for the wind to carry it away, the scientists reported in the study.
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They also learned that this area has been thinning at an accelerated pace in comparison to the rest of the field. Since the late 1970’s, two of the sites have a view of their ice thickness reduction of about 5 feet (2 meters), the researchers wrote.
“We still don’t know exactly why, but that’s probably because the ice is more mobile and is therefore in a position to make this area more so than in the past,” Moore said.
Climate change is heating things up in the Arctic at a rate that is unparalleled anywhere else in the world. In June, the average temperature in the Arctic was warmer than the normal average by nearly 10 degrees Fahrenheit (5.5 degrees Celsius). Because the climate models have probably underestimated the ice loss from the ice-age Area, it is possible that the Arctic will reach an ice-free state faster than predicted, the study’s authors warned. And as the Earth continues to warm, even to the Last ice age, the Area won’t stay frozen for much longer, Moore said.
“In the end, we will lose the ice in this area, and, if we do not have to use the carbon control in the next few years,” he said. “We’re going down to a point where we will not be able to sustain these ecosystems, and if the ice loss continues through the latter half of the century.”
The findings were published online Jan. 15 in the journal Geophysical Research Letters.
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Originally published on Live Science.