Definition of Arctic and Antarctic Sea Ice Variation Index

作     者：陈红霞 刘娜 潘增弟 张庆华 

作者机构：Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China Graduate School of the Chinese Academy of Sciences Beijing China Key Lab of Marine Science and Numerical Modeling First Institute of Oceanography SOA Qingdao 266061 China Key Lab of Marine Science and Numerical Modeling First Institute of Oceanography SOA Qingdao 266061 ChinaCollege of Physical and Environmental Oceanography Chinese Ocean University Qingdao 266003 China Polar Research Institute of China Shanghai 200136 China 

出 版 物：《Chinese Journal of Polar Science》 (极地研究（英文版）)

年 卷 期：2004年第15卷第2期

页      面：137-142页

学科分类：07[理学] 0707[理学-海洋科学] 

基　　金：supported by the National Natural Science Foundation of China(Grant No:40231013) 

主　　题：Arctic sea ice Antarctic sea ice variation index. 

摘      要：It is well known that varying of the sea ice not only in the Antarctic but also in the Arctic has an active influence on the globe atmosphere and ocean. In order to understand the sea ice variation in detail, for the first time, an objective index of the Arctic and Antarctic sea ice variation is defined by projecting the monthly sea ice concentration anomalies poleward of 20°N or 20°S onto the EOF (empirical orthogonal function)-1 spatial pattern. Comparing with some work in former studies of polar sea ice, the index has the potential for clarifying the variability of sea ice in northern and southern high latitudes.