Arctic summer sea ice may disappear in the 2030s, new research warns
夏の北極圏から海氷が消えるようになる状況が、従来の予測よりも約１０年早く実現する可能性がある
The disappearance of sea ice from the Arctic in summer could come about a decade earlier than previously predicted.
Scientists are issuing such warnings
It’s another clear sign that the climate crisis is unfolding faster than expected as the world continues to emit greenhouse gases.
今回の研究は、６日刊行のネイチャー・コミュニケーションズ誌に掲載された
The study was published in the June 6 issue of Nature Communications.
Arctic sea ice could disappear completely during September as early as the 2030s
Even if the world slashed its greenhouse gas emissions today, Arctic sea ice could disappear over the summer by the 1950s, scientists report.
研究では１９７９年から２０１９年までの海氷の変化を分析
Study analyzes changes in sea ice from 1979 to 2019
Comparing different satellite data and climate models
その結果、海氷の減退は大半が人間由来の温暖化に起因することが分かった
They found that most of the decline in sea ice is due to human-induced warming.
Previous climate models also underestimated the melting trend of Arctic sea ice.
北極圏の海氷は冬の間形成され、夏に融解する
Arctic sea ice forms in winter and melts in summer
Sea ice typically reaches its lowest level in September, then repeats formation and melting
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