副热带急流 meaning in English

subtropical jet stream

In addition , in the austral winter , the westerly jet splits into two branches over the south pacific from 600 to 100hpa , with the subtropical branch located at 27 . 5 s and the polar counterpart at 60 s . the maximal speed of the former is at 200hpa while the speed of the latter increases with height
其次，在南半球冬季， 600 ? 100hpa的南太平洋上空西风急流会出现分裂，其中副热带急流中心位于27 . 5 s ，高纬度急流中心位于60 s ，前者在200hpa层风速达到极大值，后者风速随高度增加而增加。