摘要
利用 IAP- GCM数值模式模拟了南极冰消退时大气响应的候平均时间序列场 ,经带通滤波研究了大气季节内振荡的特征。得到了大气对南极冰消退的响应是一种具有 30～ 60天周期的低频遥响应。它在南半球高纬的传播基本上为西传 ,而在赤道附近有东传趋势 ,南半球中纬地区呈明显的东传现象。在纬向季节内振荡最大动能区位于大洋内 ,其扰动能量在波列路径上的传播具有很明显的一致性和系统性。
This article presents the results of numerical simulation of the atmospheric response to the Antarctic ice decrease of pentad average time series fields. The characteristics of seasonal atmospheric oscillation are studied by using band pass filtered data, and some conclusions are revealed that the atmospheric response to the ice decrease in Antarctic area is just a 30～60 day low frequency remote response; While its propagation is basically westwards in high latitudes in the Southern Hemisphere, it tends to propagete eastwards near the equator, and it travel eastwards in mid latitudes in the Southern Hemisphere; The maximum kinetic energy of the seasonal oscillation lies over the open ocean, and the propagation of its disturbance energy along the moving train path is to a great extent systematic and consistent.
出处
《解放军理工大学学报（自然科学版）》
EI
2000年第6期7-14,共8页
Journal of PLA University of Science and Technology(Natural Science Edition)
基金
国家重点基础研究专项经费资助项目!(G19980 40 90 0 )
