The role of the Arctic Ocean in the global climate system during the last climatic cycles remains conjectural, but radiocarbon-based chronologies and proxy data provide reliable information about the present interglacial. In the western Arctic, paleoceanographic data demonstrate a linkage between increasing Pacific water fluxes, resulting from the postglacial submergence of the Bering Strait, and the progressive warming, until climate conditions stabilized when sea level reached its present-day limit during the late Holocene. Meanwhile, the southeastern Arctic Ocean evolved from optimal conditions toward a perennial sea ice cover with cooling. We hypothesize that sea level, which determines the depth of Bering Strait and the submergence of the Arctic shelves, has led to enhanced production of seasonal sea ice and an increased freshwater export to the North Atlantic Ocean, since the onset of the present interglacial until preindustrial time.

中文翻译：

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当前间冰期期间北冰洋东西向气候的对立响应


在上一个气候周期中，北冰洋在全球气候系统中的作用仍然是推测，但基于放射性碳的年代学和代理数据提供了关于当前间冰期的可靠信息。在北极西部，古海洋学数据表明，由于冰期后白令海峡被淹没而导致的太平洋水通量增加与逐渐变暖之间存在联系，直到全新世晚期海平面达到今天的极限时气候条件稳定下来。与此同时，北冰洋东南部从最佳条件演变为常年海冰覆盖并伴有冷却。我们假设，从目前的间冰期开始到工业化前时期，决定白令海峡深度和北极大陆架淹没的海平面导致季节性海冰产量增加，并向北大西洋出口淡水增加。