Abstract Deglacial sea surface conditions in the subarctic North Pacific and marginal seas are the subject of increasing interest in paleoceanography. However, a cohesive picture of near-surface oceanography from which to compare inter and intra-regional variability through the last deglaciation is lacking. We present a synthesis of sea surface temperature covering the open North Pacific and its marginal seas, spanning the past 20 ka using proxy records from foraminiferal calcite (δ18O and Mg/Ca) and coccolithophore alkenones (Uk’37). Sea surface temperature proxies tend to be in agreement through the Holocene, though Uk’37 records are often interpreted as warmer than adjacent δ18O or Mg/Ca records during the Last Glacial Maximum and early deglaciation. In the Sea of Okhotsk, Holocene discrepancies between δ18O and Uk’37 may be the result of changes in near-surface stratification. We find that sea-surface warming occurred prior to the onset of the Bolling-Allerod (14.7 ka) and coincident with the onset of the Holocene (11.7 ka) in much of the North Pacific and Bering Sea. Proxy records also show a cold reversal roughly synchronous with the Younger Dryas (12.9–11.7 ka). After the onset of the Holocene, the influence of an intensified warm Kuroshio Current is evident at higher latitudes in the Western Pacific, and an east-west seesaw in sea surface temperature, likely driven by changes in the strength of the North Pacific Gyre, characterizes the open interglacial North Pacific.

中文翻译：

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过去 20,000 年中亚北极北太平洋和边缘海的海面温度：古海洋学综合

摘要 亚北极北太平洋和边缘海的冰消期海面条件是古海洋学越来越感兴趣的主题。然而，缺乏近地表海洋学的连贯性图片，从中可以比较最后一次冰消期的区域间和区域内变化。我们使用来自有孔虫方解石（δ18O 和 Mg/Ca）和颗石藻烯酮（Uk'37）的代理记录，对覆盖开放的北太平洋及其边缘海的海面温度进行了综合，跨越了过去 20 ka。在全新世期间，海面温度代理趋于一致，尽管 Uk'37 记录通常被解释为在末次盛冰期和早期冰消期期间比相邻的 δ18O 或 Mg/Ca 记录更温暖。在鄂霍次克海，δ18O 和 Uk'37 之间的全新世差异可能是近地表分层变化的结果。我们发现海面变暖发生在 Bolling-Allerod (14.7 ka) 开始之前，与北太平洋和白令海大部分地区的全新世 (11.7 ka) 开始一致。代理记录还显示了与新仙女木 (12.9–11.7 ka) 大致同步的冷反转。全新世开始后，西太平洋高纬度地区明显受到暖黑潮暖流的影响，海面温度呈东西向跷跷板，这可能是由北太平洋环流强度的变化驱动的。开放的间冰期北太平洋。7 ka) 并与北太平洋和白令海大部分地区的全新世 (11.7 ka) 的开始相吻合。代理记录还显示了与新仙女木 (12.9–11.7 ka) 大致同步的冷反转。全新世开始后，西太平洋高纬度地区明显受到暖黑潮暖流的影响，海面温度呈东西向跷跷板，这可能是由北太平洋环流强度的变化驱动的。开放的间冰期北太平洋。7 ka) 并与北太平洋和白令海大部分地区的全新世 (11.7 ka) 的开始相吻合。代理记录还显示了与新仙女木 (12.9–11.7 ka) 大致同步的冷反转。全新世开始后，西太平洋高纬度地区明显受到暖黑潮暖流的影响，海面温度呈东西向跷跷板，这可能是由北太平洋环流强度的变化驱动的。开放的间冰期北太平洋。