冰芯记录中末次间冰期-冰期旋回气候突变事件的研究进展

冰芯记录中的气候变化是古气候研究中的重要组成部分. 极地、中低纬度和热带地区的冰芯记录表明, 在冰期间冰期旋回大尺度气候变化背景下, 全球经历了一系列数百年至千年时间尺度的快速气候突变事件, 诸如末次间冰期的干冷事件、末次冰期的DansgaardOeschger事件、 Heinrich事件和Younger Dryas事件等, 虽然这些穿插在冰阶中的暖湿气候事件、间冰阶中的干冷气候事件的成因、机制和影响范围还存在明显的不确定性. 主要介绍不同区域冰芯记录中末次间冰期冰期旋回这些气候突变事件发生的时间、过程和机制等的研究进展.

Progresses in the Studies of Abrupt Climatic Change Events Recorded in Ice Cores During the Last Glacial-Interglacial Cycle

Climate changes recorded in the ice cores are the main parts of palaeoclimatology. The palaeoclimatic records in the ice cores from polar, lower\|mid latitudes and tropical regions indicated that the global climate has experienced a series of rapid changes on the timescales of centuries to millennium against the general background of the glacial\|interglacial cycle. However, the significant uncertainties remain about the cause, mechanism and the scales of the impact of the abrupt change events, such as DansgaardOeschger events, Heinrich events and Younger Dryas event during the last glacial cycle, and cold and dry events during the last interglacial, which are a series of warmer and wetter events punctuated through the glacial period, cold and dry events among of the interglacial period. In this paper the recent study outcomes are reviewed, and the recent progress in timing, process and mechanism of these climatic change events recorded in the ice cores from different areas during the last glacial\|interglacial cycle are shown up.