作为Arctic sea -冰驱动器的Sea-level和夏季轨道日射
Sea-level and summer season orbital insolation as drivers of Arctic sea-ice
摘要：
北冰洋的海冰覆盖是北半球气候和海洋系统的一个重要因素，因为它影响着赤道、大气压力状况、海洋/大气界面的CO2交换以及北大西洋淡水收支和热盐环流[1]。由于全球变暖，北极海冰覆盖目前正以前所未有的速度在夏季完全融化，推动了所谓的“北极放大”[2]。然而，北极海冰也经历了大幅度的变化，从季节到轨道（米兰科维奇）的时间尺度，在过去。最近的研究表明，尽管日照是北极海冰随时间变化的主要驱动因素，但海平面变化控制着冰架上“海冰工厂”的发展（图1），从而微调了北冰洋对冰川/间冰期振荡的响应，与低纬度地区相比，这种振荡的相位略有不同[3，4]。我们将在下面讨论在过去温暖时期，太阳辐射和海平面变化如何相互作用并控制北冰洋的海冰覆盖，以及它们在未来如何仍然会产生干扰。
英文摘要：
The sea-ice cover of the Arctic Ocean is an important element of the climate and ocean system in the Northern Hemisphere as it impacts albedo, atmospheric pressure regimes, CO2-exchange at the ocean/atmosphere interface as well as the North Atlantic freshwater budget and thermohaline circulation [1]. Due to global warming, the Arctic sea-ice cover is presently evolving at an unprecedent rate towards full melt during the summer season, driving the so-called "Arctic amplification" [2]. However, the Arctic sea-ice has also experienced large amplitude variations, from seasonal to orbital (Milankovitch) time scales, in the past. Recent studies led to suggest that whereas insolation has been a major driver of Arctic sea-ice variability through time, sea-level changes governed the development of "sea-ice factories" over shelves (Figure 1), thus fine-tuning the response of the Arctic Ocean to glacial/interglacial oscillations that is slightly out of phase compared to lower latitudes [3,4]. We discuss below how insolation and sea-level changes may have interacted and controlled the sea-ice cover of the Arctic Ocean during warm past intervals and how they could still interfere in the future.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
