COMPARATIVE RESEARCH OF THE CLIMATIC CHANGES IN THE ARCTIC AND THE OTHER REGIONS IN THE NORTHERN HEMISPHERE DURING THE TRANSITION FROM THE LAST GLACIAL MAXIMUM TO THE PRESENT INTERGLACIAL (HOLOCENE)

The climatic changes after the last glaciation have attracted many scientists attention. In the unique geographical region, as a super air-condition, the climate changes of Arctic may influence the other regions in the world, especially the regions of the Northern Hemisphere, because they belong to the same atmospheric circulation system of the Northern Hemisphere. Many scientists are making effort to find out the relationship of climatic changes between the Arctic areas and others in the Northern Hemisphere and some achievements are gained(1 3 4). The transition from the last glacial maximum to the present interglacial (Holocene) has great importance in understanding how Earth's climate system can abruptly switch from one state to another(2). So here we select the transition as a representative period to study the climatic changes. The purpose of our research in this paper is to compare the climatic changes in the Arctic with those in other regions of the Northern Hemisphere, mainly in the Northern America, Europe and China. With the climate proxy data, including isotope of oxygen ( 18 O), paleobiology, pollen records, geochemistry element data, I will use methods of Singular Spectrum Analysis£¬Similarity Analysis£¬Cluster Analysis, Factor Analysis and Space Optimum Cutting Method to find the correlation and similarities between the Arctic and the other regions of the Northern Hemisphere and to find out which region is most sensitive to the climatic changes of the Arctic. Establishing and comparing the geographic extent, sequence, and magnitude of climate oscillations in this period is essential for understanding the mechanisms and causes of abrupt short-term climatic changes. This research was financially supported by funding from National Natural Science Foundation of China (49971078).