中文摘要：

在有大气的 intraseasonal (3060 天) 的低频率的风地模式的西方的太平洋上的台风轨道的协会在 850 hPa 的摆动被使用观察数据分析进一步学习。比较级在 850 hPa 合成的风领域分析，对比有原来的发行量的大气的 intraseasonal 摆动(ISO ) ，台风追踪的表演是仔细与 ISO 的风模式有关但是不显然与原来的风领域有关。在 2006 的二台风的案例研究也证明低频率的风地模式，特别地在 850 hPa 的低频率的气旋的涡度的最大值的线(带) ，仔细与台风轨道有关。因此，低频率的发行量模式和 lowfrequency 的最大值的线(带) 在 850hPa 的气旋的涡度能被用来在西北的太平洋上预言台风轨道。

英文摘要：

The association of typhoon tracks over the western Pacific with the low-frequency wind-field pattern of atmospheric intraseasonal （30-60 days） oscillation at 850 hPa is further studied by using observational data analyses. Comparative analyses of the composite wind fields at 850 hPa, contrasting the atmospheric intraseasonal oscillation （ISO） with the original circulation, show that the typhoon tracks are closely related to the wind pattern of the ISO but are not obviously related to the original wind fields. Case studies of two typhoons in 2006 also show that the low-frequency wind-field pattern, particularly the maximum-value line （belt） of low-frequency cyclonic vorticity at 850 hPa, is closely related to the typhoon track. Therefore, the low-frequency circulation pattern and the maximum-value line （belt） of lowfrequency cyclonic vorticity at 850hPa can be used to predict typhoon tracks over the northwestern Pacific.