What happens in the Arctic doesn’t stay in the Arctic.
It’s no secret that the Arctic is rising faster than the rest of the world, but new study suggests that the problem may have been overstated. According to a recent study, the Arctic has been rising at least four times faster than the world average, and maybe twice as fast as some prior projections.
The new study was published today in the journal Nature Communications Earth & Environment.
The Arctic is generally recognized to be one of the places of the globe that has been most severely impacted by climate change, a process known as Arctic amplification or polar amplification.
One of the primary causes of this is feedback from melting sea ice and snow cover. As the Arctic heats, it loses its snow and ice cover, becoming darker and less reflecting, allowing more solar energy to be absorbed. The Arctic then warms, perpetuating the problem in a vicious spiral.
Due to polar amplification, it was often assumed that the Arctic was warming twice, if not three times, faster than the rest of the earth. However, new study from the Finnish Meteorological Institute indicates that this is most likely an overestimate.
Between 1979 and 2021, a substantial portion of the Arctic Ocean warmed at a pace of 0.75°C (1.35°F) every decade, which was at least four times faster than the world average.
The temperature rise was far more extreme elsewhere. Warming was found to be as high as 1.25°C (2.25°F) each decade in the Eurasian section of the Arctic Ocean, in the Svalbard and Novaya Zemlya archipelagos above Norway and Russia – seven times faster than the world average.
“While the magnitude of Arctic amplification is dependent to some extent on how the Arctic region is defined and the period of time used in the calculation, climate models were found to underestimate Arctic amplification almost independent of the definition,” said Mika Rantanen, lead study author and researcher at the Finnish Meteorological Institute, in a statement obtained by IFLScience.
The researchers highlighted that while some Arctic amplification is likely due to natural long-term climatic changes, it is obviously detachable from climate change induced by human activities.
Scientists have previously warned that temperatures near the North Pole have risen so quickly that we should now consider the Arctic to be in a new climatic condition. In comparison to the “old Arctic,” the “new Arctic” has significantly different sea ice volume, temperatures, rainy seasons, and snowfall.
With more warming, we may expect significant changes in the region’s biodiversity and natural ecosystem. However, the misery of the arctic areas will have an influence on other parts of the planet in the form of increasing sea levels and the emission of methane from thawing permafrost. What occurs in the Arctic, after all, does not remain in the Arctic.
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