";s:4:"text";s:5069:" “Our study shows that the changes in the jet stream are at least partly due to the loss of Arctic sea ice. Study finds loss of Arctic sea ice may not be the cause of cold winters elsewhere The pattern bringing the snow and cold to places such as D.C., New York and …
Arctic ice loss is worrying, but the giant stirring in the South could be even worse July 11, 2019 4.16pm EDT Nerilie Abram , Australian National University , Matthew England , UNSW , … Researchers were astounded when, in the fall of 2007, they discovered that the year-round ice pack in the Arctic Ocean had lost some 20 percent … The Arctic Oscillation’s strongly positive mode through the mid-1990s flushed thicker, older ice out of the Arctic, replacing multiyear ice with first-year ice that is more prone to melting. Here the authors present climate change simulations to show that sea-ice loss is essential for the existence of Arctic amplification.
Arctic and Antarctic sea-ice extent are both projected to dramatically decline over the coming century. The effects of Arctic sea-ice loss are not …
Arctic sea ice moves continually. September Arctic sea ice is now declining at a rate of 12.85 percent per decade, relative to the 1981 to 2010 average. Sea ice is frozen water that forms, expands, and melts in the ocean. Loss of ice and melting permafrost spells trouble for polar bears, walruses, arctic foxes, snowy owls, reindeer, and many other species. Arctic sea ice loss affects the jet stream. Arctic sea ice reaches its minimum each September. East of Greenland, the Fram Strait is an exit ramp for ice drifting out of the Arctic Ocean. After the mid-1990s, the AO was often neutral or negative, but sea ice failed to recover. It is different from icebergs, glaciers, ice sheets, and ice shelves, which originate on land.
The cause of Arctic amplification is still heavily debated. This graph shows the average monthly Arctic sea ice extent each September since 1979, derived from satellite observations. We will have to wait to see if 2019 continues to break ice-melt records, but in the rapidly warming Arctic the long-term trends of ice loss are clear.. … It was the 11 th-lowest maximum in the 42-year satellite record. If the ice cover continues to dwindle, we believe that both the frequency and intensity of the extreme weather events previously observed in the middle latitudes will increase,” said Markus Rex, who heads atmospheric research at the Alfred Wegener Institute in Potsdam, Germany. Mid-Holocene climate was characterized by strong summer solar heating that decreased Arctic sea ice cover.
The effects of Arctic sea-ice loss are not limited to the northern high latitudes, and reach deep into the tropics. Located in the Arctic region, the Greenland Ice Sheet is the second largest ice mass on Earth, next only to the Antarctic Ice Sheet. The five Arctic regions accounted for the greatest share of ice loss. Declining sea ice will lead to a loss of habitat for seals and polar bears; it also should increase encounters between polar bears and humans. Prepare for yet more extremes of seasonal weather. Arctic sea ice is part of a complex global system, and as a result it affects communities at all latitudes. Arctic sea ice extent—the area where ice concentration is at least 15 percent—reached its apparent annual maximum on March 5, 2020. The five Arctic regions accounted for the greatest share of ice loss.
Arctic sea ice loss unprecedented in 1,450 years The recent loss of sea ice in the Arctic is greater than any natural variation in the past 1½ millennia, a Canadian study shows. On March 24, the National Snow and Ice Data Center (NSIDC) reported that the 2019–2020 growth season had an unexceptional finish: 5.81 million square miles (15.05 million square kilometers). As they are affected, so too are the other species that depend on them, in addition to people.