The sea ice is rapidly losing mass due to global warming. “Rapid Arctic warming and sea ice loss are attracting a lot of attention in the media, public and scientific community. Our study links the two together and suggests that the sea ice loss is causing the rapid warming in the Arctic,” said the lead author, Aiguo Dai.
Both recent model simulations and observational investigations with greenhouse gases (GHGs) emissions increasing, north of 67°N Latitude, are talking about enhanced warming in the Arctic. In the Arctic, global warming is happening twice as fast than in any other place on Earth. However, it is still under considerable debate why the largest the Arctic amplification (AA) only occurs in certain periods and over areas that lose sea-ice significantly.
Scientists from the State University of New York, Albany and Institute of Atmospheric Physics, Chinese Academy of Sciences found the answers employing historical data analyzation and climate model simulations. Their analyses indicated that AA would not slow down until the 22nd and 23rd centuries, after almost all of the Arctic’s sea ice has melted away with GHGs emissions increasing.
Sea ice loss is accelerating more and more due to global warming
There are some answers found by scientists from the Chinese Academy of Sciences, the State University of New York, Albany and Institute of Atmospheric Physics, utilizing climate model simulations and historical data analyzation.
Only during the cold season which lasts from October to April, according to this research, the large AA occurs, and it just happens over the area of prominent sea-ice loss. Because the seasonal sea ice melting causes more extensive upper seawater from May to September and more sunlight is absorbed during the warm season, the heat energy is stored in sea-surface Arctic waters.
Through longwave radiation, most of this energy is released into the atmosphere and during the cold season when the Arctic Ocean becomes a heat source latent and sensible heat fluxes to heating the atmosphere which leads to large AA.
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