摘要
计算发现北半球高海拔地区树轮重建的温度序列和具有温度指示意义的祁连圆柏树轮宽度年表均与南半球Quelccaya冰心δ^(18)O序列年际间显著相关,r=0.13~0.22(p<0.0001)。40年滑动平均后,序列之间相关关系大幅度提高,甚至高达0.74(p<0.0001)。树轮宽度和冰心δ^(18)O不同的记录载体传达了共同的信息:南北半球高海拔地区温度变化存在很强的高频和低频振荡遥相关关系。
By calculating, it is found that there is significant correlation between ice core δ^18O series from Quelccaya in southern hemisphere and the reconstructed temperature series by tree rings from high-altitude of Northern Hemisphere, as well as ring-width chronology of Sabina przewalskii which is temperature indicative, with r=0.13~0.22 （p〈0.0001）. After 40-year＇s moving average, the correlation coefficient improved greatly, even up to 0.74 （p〈0.0001）. Common information derived from tree-ring width and ice core δ^18O together indicates that there are strong tele-connections in both high and low frequency of temperature variations in high-latitude areas between North and South hemispheres. It may suggest there are some linkages between Asian Monsoon circulation and Asia-Pacific Oscillation （APO）, ENSO and other climate events （An and Thompson, 1998）. It also shows the representativeness of temperature variations in Tibetan Plateau of China for large region scale （Asia or hemisphere）.
出处
《地球环境学报》
2010年第2期100-104,共5页
Journal of Earth Environment
基金
国家自然科学基金项目NSFC(40890051)
中国科学院"百人计划"
知识创新工程项目(KZCX2-YW-Q1-01)
黄土与第四纪地质国家重点实验室开放基金
