Comparison between the interannual and decadal components of the Silk Road pattern

作     者：HONG Xiao-Wei XUE Shu-Hang LU Ri-Yu LIU Yu-Yun HONG Xiao-Wei;XUE Shu-Hang;LU Ri-Yu;LIU Yu-Yun

作者机构：Climate Change Research CenterChinese Academy of Sciences College of Atmospheric ScienceNanjing University of Information Science & Technology State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid DynamicsInstitute of Atmospheric PhysicsChinese Academy of Sciences College of Earth SciencesUniversity of the Chinese Academy of Sciences Center for Monsoon System ResearchInstitute of Atmospheric PhysicsChinese Academy of Sciences 

出 版 物：《Atmospheric and Oceanic Science Letters》 (大气和海洋科学快报（英文版）)

年 卷 期：2018年第11卷第3期

页      面：270-274页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

基　　金：supported jointly by the National Natural Science Foundation of China[Grant numbers 41705044 and 41405053] 

主　　题：Silk Road pattern interannual variability decadal variation temperature 

摘      要：The Silk Road pattern（SRP）, which is a teleconnection pattern along the Asian upper-tropospheric westerly jet in summer, exhibits both interannual and decadal variabilities. Through the nineyear Gaussian filtering method and regression analyses, this study compares the interannual and decadal components of the SRP. The results indicate that the interannual SRP corresponds to a well-organized wave train of alternate cyclonic and anticyclonic anomalies across the Eurasian continent along the Asian westerly jet, resulting in a similar wave-like pattern of cold and warm surface temperature anomalies. This pattern of temperature anomalies differs from that associated with the original SRP, which is characterized by warmer or cooler temperatures mainly over Europe–West Asia and Northeast Asia, depending on the phase of the SRP. On the other hand, the decadal SRP shows a similar pattern to the interannual one from Europe to Central Asia, but the meridional wind anomalies tend to be weak over East Asia. These circulation anomalies are responsible for the significant temperature anomalies over Europe–West Asia and Northeast Asia but weak anomalies between these two domains.