%A ZHANG Xiao, ZHANG Xu %T Two types of millennial-scale climate oscillations during the last Quaternary and their triggering mechanism %0 Journal Article %D 2022 %J Earth Science Frontiers %R 10.13745/j.esf.sf.2021.9.56 %P 322-333 %V 29 %N 5 %U {https://www.earthsciencefrontiers.net.cn/CN/abstract/article_6386.shtml} %8 2022-09-25 %X

Dansgaard-Oeschger events (DO) and Heinrich Stadial (HS) are the most pronounced millennial-scale climate oscillations during the Quaternary. HS, also called HS-DO event, is considered a special DO type in some occasions. Massive ice sheet melting associated with HS occurs during the cold phase of DO cycles, in contradiction to the expectation that ice sheets expand in colder climates and shrink in warmer climates. These events have global climate impacts and thus have been the focus of paleoclimate community for the past several decades, but their triggering mechanism are still under debate. This work summarizes all current available proxy records that contain fingerprints of these abrupt climate oscillations, and discusses limitations in the mechanistic explanations for DO and HS-DO based on current available modeling results, as well as future prospects especially the prospects of modeling these events.