Late Pleistocene and Holocene ground ice are common throughout the Arctic. Some forms of relict ground ice preserve local meteoric water, and their stable oxygen‐ and hydrogen‐isotope ratios can be used to reconstruct past air temperatures. In this paper, we review the formation and sampling of two forms of relict ground ice—wedge ice and pore ice—and recent (2010–2019) advances in paleoclimatological studies of ground‐ice stable isotope records in the Arctic. Recent advances are attributed to better chronological constraints and refined understandings of the systematics and seasonality of relict wedge ice and pore ice. A rich network of ice‐wedge records has emerged, primarily from the Siberian Arctic, whereas pore‐ice records are less common. The ice‐wedge network depicts a robust pattern of late Pleistocene cooling, and remarkably similar temperature depressions during Marine Isotope Stages 3 and 2. Very high‐resolution wedge‐ and pore‐ice stable isotope chronologies have been established recently and used to reconstruct winter and summer climate histories and to assess seasonal dependencies in insolation‐forced climate. Reports of ancient (>125 ka BP) ground ice demonstrate its long‐term persistence, and its potential to expand our knowledge of Quaternary climate dynamics in the terrestrial Arctic.

中文翻译：

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北极楔形和孔隙冰稳定水同位素记录古气候学研究的最新进展

晚更新世和全新世地冰在整个北极都很常见。某些形式的残冰保留了当地的大气水，它们稳定的氧和氢同位素比可用于重建过去的气温。在本文中，我们回顾了两种形式的残冰——楔形冰和孔隙冰——的形成和采样，以及最近（2010-2019 年）北极地冰稳定同位素记录古气候学研究的进展。最近的进展归功于更好的时间限制和对残余楔形冰和孔隙冰的系统性和季节性的更好理解。已经出现了丰富的冰楔记录网络，主要来自西伯利亚北极，而孔隙冰记录不太常见。冰楔网络描绘了晚更新世冷却的强大模式，海洋同位素第 3 和第 2 阶段期间的温度下降非常相似。 最近建立了非常高分辨率的楔形和孔隙冰稳定同位素年表，用于重建冬季和夏季气候历史，并评估日晒强迫气候的季节性依赖性。古代（> 125 ka BP）地冰的报告证明了它的长期持久性，以及它有可能扩大我们对北极陆地第四纪气候动力学的认识。