中文摘要：

现在的学习验证了 AM2.1 的能力，一个模型在 NOAA 的地球物理的液体动力学实验室(GFDL ) 发展了，在复制东方亚洲副热带的西的喷气溪流(EASWJ ) 的基本特征。EASWJ 的主要行为也通过观察 NCEP/NCAR 数据的分析被调查。EASWJ 的吝啬的状态包括它的紧张，地点，结构，和季节的进化在模型通常是描绘得好的。与观察相比，模型趋于复制一个更弱的喷气中心。并且在夏天期间，模仿的喷气中心是向北方位于的。结果也证明模型在夏天期间捕获 EASWJ 的可变性很好。为观察和模拟在东亚上在 200 hPa (U200 ) 在带的风上使用的实验直角的功能(文件结束) 的结果在 1970 年代末附近显示内部十的移动。在相应原则部件之间的关联系数与在 99% 信心水平的意义象 0.42 一样大。

英文摘要：

The present study validated the capability of the AM2.1, a model developed at NOAA＇s Geophysical Fluid Dynamics Laboratory （GFDL）, in reproducing the fundamental features of the East Asian Subtropical Westerly Jet Stream （EASWJ）. The main behaviors of the EASWJ are also investigated through the reanalysis of observational NCEP/NCAR data. The mean state of the EASWJ, including its intensity, location, structure, and seasonal evolution is generally well-portrayed in the model. Compared with the observation, the model tends to reproduce a weaker jet center. And, during summer, the simulated jet center is northward-situated. Results also demonstrate the model captures the variability of EASWJ during summer well. The results of the empirical or- thogonal function （EOF） applied on the zonal wind at 200 hPa （U200） over East Asia for both the observation and simulation indicate an inter-decadal shift around the late 1970s. The correlation coefficient between the corresponding principle components is as great as 0.42 with significance at the 99% confidence level.