Instability characteristics of the East Asian Monsoon recorded by high-resolution loess sections from the last interglacial (MIS5)

摘要

The selection of high-resolution loess sections is needed in order to determine the climatic variability of the East Asian Monsoon during the last interglacial. Two sequences of S1 on the eastern and western sides of the Liupan Mountain were both composed of five paleosol layers and four loess layers, indicating that there were five strong summer monsoon events and four strong winter monsoon events in MIS5. This corresponds with other records of the East Asian Monsoon, along with NGRIP and the North Atlantic records, implying that the climate of the Northern Hemisphere was very instable during the last interglacial. Two layers of paleosols and one layer of loess had developed during MIS5a and MIS5c. Compared with MIS5e, the climate in MIS5a and MIS5c fluctuated more intensively on a millennial scale, whereas the climate was relatively stable in MIS5e.