在 200-hPa 之间的关系在东方亚洲沿海的水西方的太平洋(WPJS ) 上的西的喷气流异例,和加热的海洋的表面和摘要规模的短暂旋涡(STE ) 在在冬的北方太平洋上的活动异例被使用 ERA-40 和 NCEP/NCAR 分析数据检验。分析证明加热的表面和 STE 异例有不同模式,相应于三个 WPJS 异常模式分别地。在第一个 WPJS 异常模式, WPJS 主要部分不显示出柔韧的异例。异常的西的风,经过日期线发生在中间纬度的中央东方的太平洋上与经过日期线和北方太平洋盆的中心在热带中央东方的太平洋介绍两个的异常加热被联系。同时, STE 异例出现在异常的带的风的区域附近。在在第二个 WPJS 模式显示出的喷气力量的变化是强烈,与在自台湾东面的菲律宾海流向日本的暖流水流的加热异例有关,在喷气的区域和 STE 异例退出区域。第三个模式表明 WPJS 的 northward/southward 移动,它与在西方的诺思太平洋的加热异例的偶极的模式在 35 ° N 分开了的南方北方有一个统计连接。同时, STE 空间排水量与在一样的方向的喷气移动一起。加热异例与大气的发行量有一个靠近的连接,并且因此改变中间纬度的 baroclinicity,它然后经由内部大气的动力学增强 WPJS 异例,导致 STE 异例。
The relationships between the 200-hPa westerly jet stream anomalies over the East Asian coastal waterwestern Pacific (WPJS), and the oceanic surface heating and synoptic-scale transient eddy (STE) activity anomalies over the North Pacific in wintertime are examined by using ERA-40 and NCEP/NCAR reanalysis data. The analysis demonstrates that the surface heating and the STE anomalies have different patterns, corresponding to the three WPJS anomalous modes, respectively. In the first WPJS anomalous mode, the WPJS main part shows no robust anomaly. The anomalous westerly wind, occurring over the mid-latitude central-eastern Pacific past the date line is associated with the anomalous heating presenting both in the tropical central-eastern Pacific past the date line and the center of the North Pacific basin. Meanwhile, the STE anomaly appears around the region of the anomalous zonal wind. The fluctuation in jet strength shown in the second WPJS mode is strongly related to the heating anomaly in the Kuroshio Current region and the STE anomaly in the jet exit region. The third mode demonstrates a northward/southward shift of the WPJS, which has a statistical connection with a south-north dipolar pattern of the heating anomaly in the western North Pacific separated at 35°N. Meanwhile, the STE spatial displacement is in conjunction with jet shifts in the same direction. The heating anomaly has a close connection with the atmospheric circulation, and thus changes the mid-latitude baroclinicity, leading to the STE anomaly, which then reinforces the WPJS anomaly via internal atmospheric dynamics.