Study on time-spatial changes and sudden characteristic of Winter Mongolia High  

作　　者：LiQunWang ChongYin Li YanKe Tan WeiMin Ma 

机构地区：[1]China Satellite Maritime Tracking & Control Department, Jiangyin, Jiangsu 214431, China [2]Institute of Meteorology, PLA University of Science and Technology, Nanjing, Jiangsu 211101, China [3]Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China

出　　处：《Research in Cold and Arid Regions》2010年第5期427-435,共9页寒旱区科学（英文版）

基　　金：supported by the National 973 project (No.2007CB411805);partly supported by the Lab for Applied Geophysics at Institute of Meteorology, PLA University of Science and Technology

摘　　要：Based on the 155 years global monthly mean sea surface pressure data （Jan. 1850-Dec. 2004） from Hadley Centre, the time spatial change and sudden characteristics of the Winter Mongolia High are studied. First, the winter SLP distribution in Asia and the North Pacific are analyzed by the EOF method. Second, main cycle sequences of the Winter Mongolia High are reconstructed by the Singular Spectrum Analysis method, with special emphasis on the interdecadal periodic changes. Finally, the abrupt climate change is examined by the Mann-Kendall method. Results show that the Winter Mongolia High has quasi-biennial oscillation and a 3-4-year cycle of interannual change, also has a decadal variation for the 13-14-year cycle and interdecadal cycles for 20-21 years and 35-36 years. The 20-21-year cycle of WMHI is of the opposite phase to Aleutian Low, while the 35-36-year cycle is of the same phase. Otherwise, a significant abrupt climate change point in 1927 has been detected.Based on the 155 years global monthly mean sea surface pressure data （Jan. 1850-Dec. 2004） from Hadley Centre, the time spatial change and sudden characteristics of the Winter Mongolia High are studied. First, the winter SLP distribution in Asia and the North Pacific are analyzed by the EOF method. Second, main cycle sequences of the Winter Mongolia High are reconstructed by the Singular Spectrum Analysis method, with special emphasis on the interdecadal periodic changes. Finally, the abrupt climate change is examined by the Mann-Kendall method. Results show that the Winter Mongolia High has quasi-biennial oscillation and a 3-4-year cycle of interannual change, also has a decadal variation for the 13-14-year cycle and interdecadal cycles for 20-21 years and 35-36 years. The 20-21-year cycle of WMHI is of the opposite phase to Aleutian Low, while the 35-36-year cycle is of the same phase. Otherwise, a significant abrupt climate change point in 1927 has been detected.

关 键 词：the Mongolia High Aleutian Low EOF SSA Mann-Kendall 

分 类 号：P467[天文地球—大气科学及气象学] TN918.1[电子电信—通信与信息系统]