Understanding hemisphere‐wide millennial‐scale temperature variability during past glacials in response to ice sheet dynamics and orbital forcing is one of the key targets for Quaternary climate research. While an inland propagation of abrupt temperature changes into Eurasia from the North Atlantic realm during the last glacial (Weichselian) receives increasingly broad support, much less is known regarding the penultimate glacial (Saalian) temperature variability, especially from a continental interior perspective. Here, we present a TEX₈₆‐derived lake surface temperature (LST) record from the former Black Sea “Lake” covering nearly the entire Marine Isotope Stage (MIS) 6. While orbital‐scale LST cooling likely relates to meltwater discharge from the retreating Eurasian Ice Sheet during insolation maxima, millennial‐scale LST variability suggests interstadial warming in phase with Greenland and northern Mediterranean Sea temperature records during the first half of MIS 6. Although summer insolation reached an interglacial‐like level during this period, we propose that the reduced extent of the Eurasian Ice Sheet associated with northward shifted atmospheric fronts was ultimately responsible for the inland propagation of Dansgaard‐Oeschger‐like temperature variability. During the second half of MIS 6, temperature patterns across the North Atlantic‐Eurasian corridor were more variable and less comparable with each other, likely because of the larger continental ice sheet weakening northern hemisphere atmospheric teleconnections. Temperature records across the North Atlantic‐Eurasian realm suggest a weaker atmospheric teleconnection during MIS 6 compared to MIS 3, likely related to a stronger imprint of the Eurasian Ice Sheet on the continental and regional climate.

中文翻译：

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倒数第二次冰川期间欧亚冰盖和北大西洋气候动力学对黑海温度变化的影响（MIS 6，130-184 ka BP）

第四纪气候研究的主要目标之一是了解过去冰川期间半球范围内的温度变化对冰盖动力学和轨道强迫的响应。在最后一个冰川（魏氏分布）期间，温度变化的内陆传播从北大西洋进入欧亚大陆，得到了越来越广泛的支持，但对于倒数第二个冰川（萨利）的温度变化却知之甚少，尤其是从大陆内部角度来看。在这里，我们介绍了TEX ₈₆来自前黑海“湖”的湖泊表面温度（LST）记录几乎涵盖了整个海洋同位素阶段（MIS）6。虽然轨道尺度的LST冷却可能与日照最大值期间后撤的欧亚冰盖的融水排放有关，千年级LST的变化表明在MIS 6的上半年与格陵兰岛和地中海北部的温度记录处于相间变暖。尽管在此期间夏季的日照量达到了类似冰川间的水平，但我们建议减少欧亚冰盖的范围与北移的大气锋相关的最终归因于Dansgaard-Oeschger样的温度变化向内陆传播。在MIS 6的下半年，整个北大西洋—欧亚走廊的温度模式变化较大，彼此之间的可比性较差，这可能是由于较大的大陆冰原削弱了北半球的大气遥相关性。整个北大西洋-欧亚大陆的温度记录表明，与MIS 3相比，MIS 6期间的大气遥相关性较弱，这可能与欧亚冰原在大陆和区域气候上的印记更强有关。