夏季东亚副热带反气旋进退活动的非线性机理讨论  

A Discussion of Non_Linear Mechanism on Subtropical Anticyclone's Extending/Shrinking Over East_Asia in Summer

作　　者：张韧[1] 史汉生[1] 沙文钰[1] 

机构地区：[1]空军气象学院

出　　处：《应用数学和力学》1999年第4期418-426,共9页Applied Mathematics and Mechanics

基　　金：空军基础理论资助

摘　　要：采用三维强迫耗散非线性动力学模式，结合夏季东亚副热带地区实际的环流结构和天气特征，对东亚上空副热带反气旋的活动进行了研究和探讨，导出了系统稳定性的位涡拟能判据并据此进行了分析和讨论·所得判据可为分析和预报夏季东亚上空副热带高压的进退变化及相应的东亚天气提供参考依据·Based on the actual circulation structure as well as weather characters over East_Asia subtropical region in summer, by using three_dimension non_linear forced/dissipated dynamic model, the activities of subtropical anticyclone over East_Asia have been studied and discussed. The potential enstrophy criteria of system stability have been derived and also been analysed. The criterion can provide useful reference for analysing and predicting subtropical anticyclone's extending/shrinking as well as corresponding weather over East_Asia in summer.

关 键 词：副热带反气旋 位涡拟能 热带气旋 东亚 进退活动 

分 类 号：P444[天文地球—大气科学及气象学]