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深海氧同位素(MIS)5e阶段的环境要素可与现代暖期对比,研究其气候特征和持续时间,有助于更好地理解现代暖期过程和未来气候发展趋势,是第四纪研究的一个重要问题。很多学者开展了相关研究,但对MIS 5e时期气候特征存在不同见解。通过对全球典型地区的35个具有可靠年代和可信代用指标古气候记录综合分析,初步认为:1MIS 5e起止时间为(128±2)~(116±2)ka,该时期全球范围内的气候存在小幅度波动,但对于是否存在冷事件及其变化幅度和起止时间,区域间的差异明显,如北大西洋区海洋气候记录指示MIS 5e阶段气候比较稳定,而挪威海区的气候记录显示MIS 5e早期气候有2个明显的变化,在中期存在一个冷事件;南极洲和格陵兰的δ18O,δD和CH4记录说明两区MIS 5e时期的气候都呈相对稳定状态;欧洲地区Eemian间冰期从南到北持续时间变短,气候波动幅度变大;中国地区MIS 5e气候特征研究分歧较大。2在亚轨道尺度上,MIS 5e时期全球气候具较好的一致性,太阳辐射可能是统一的驱动因子;在千年/百年尺度上,各个地区气候变化存在一定的差异性,可能受区域局地因子的控制。3在全球MIS 5e气候变化的研究中,还有很多方面有待提高,如关于全球性和区域性气候事件的联系、差异和机制问题、代用指标的指代意义及机理和MIS 5e阶段高分辨率的气候变化及古气候模拟研究等。
The environmental elements of MIS Stage 5e can be compared with the modern warm period to study its climatic characteristics and duration and help to better understand the modern warm-season process and future climate trends. It is one of the Quaternary studies important question. Many scholars have carried out relevant research, but there are different opinions on the climatic characteristics of MIS 5e. Through the comprehensive analysis of 35 reliable paleo-climatic records in the typical regions of the world and credible proxy indicators, preliminary estimates suggest that the beginning and ending time of 1MIS 5e is (128 ± 2) ~ (116 ± 2) ka, and the global climate There is a slight fluctuation. However, there are obvious differences between the cold events and the scope of change and the beginning and ending time. For example, the North Atlantic Ocean climate record indicates relatively stable climate in MIS 5e stage, while the Norwegian sea area climate record shows the early MIS 5e stage There are two obvious changes in climate and a cold event in the middle. The records of δ18O, δD and CH4 in Antarctica and Greenland indicate that the climate in MIS 5e in both areas was relatively stable. The Eemian interglacial in Europe extended from south to north for a long time Become shorter and the climate fluctuates more greatly. There is great divergence in the research on climatic characteristics of MIS 5e in China. 2 On the sub-orbital scale, the global climate in MIS 5e has good consistency and solar radiation may be the driving force of unity. At the millenium / centennial scale, there are some differences in climate change in various regions, which may be affected by regional bureaux Control of factors. 3 In the global MIS 5e study on climate change, there are still many aspects to be improved, such as the linkages, differences and mechanisms on global and regional climate events, the meaning and mechanism of proxy indicators and the MIS 5e phase high resolution Climate change and paleoclimate simulation studies.