Arctic sea ice, ocean, and climate evolution.
Arctic sea ice, ocean, and climate evolution.
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北极海冰、海洋和气候演变。
DOI：
10.1126/science.adj8469
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Bacon S
中科院分区：
文献类型：
--
作者：
Bacon S
北极海冰的减少是全球变暖造成的，冰雪吸收和反射热量的变化等过程造成的区域反馈加速了海冰的减少。到世纪末，北极海冰预计将在夏季消失，尽管这可能会更快发生。北极海冰面积的减少进一步增加了全球变暖的速度，因为反射率的减少意味着地球吸收了更多的热量。北极海冰变化本身令人担忧，但遥远的大气和海洋联系也迫使低纬度地区的天气，气候和极端事件发生变化。在本期的第972页，Polyakovet al.show认为，区域大气环流的中期变化可以控制海冰下降速度的十年变化。
Arctic sea ice decline is caused by global warming and is accelerated by regional feedbacks resulting from changes in absorption and reflection of heat by ice and snow (albedo), among other processes. By the end of the century, Arctic sea ice is confidently expected to disappear in summertime, although this will probably happen sooner . The Arctic sea ice area decline further increases global warming rates because the albedo reduction means that more heat is absorbed by Earth. The Arctic sea ice changes by themselves are concerning, but remote atmospheric and oceanic linkages also force changes in weather, climate, and extreme events at lower latitudes . On page 972 of this issue, Polyakovet al.show that mid-term variability in the regional atmospheric circulation can control decadal changes in the rate of sea ice decline.