Why do baroclinic waves tilt poleward with height 为什么斜压波随高度向极倾斜？
2.
The trade wind cell is , on the average , confined to 30 degrees poleward of the equator 平均来说，信风圈限于离赤道（向极地方向） 30度的纬度带里。
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Instead of being forced out of tropical regions as they travelled poleward , they accumulated there 它们非但不是被迫离开热带地区，相反，它们主动向两极扩散，并在那儿发展壮大。
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At this stage sea - level westerlies are strong and zonal in character and they lie poleward of their normal position 在这一阶段海平面上西风气流很强且属纬向性的，它较正常位置偏向极地（北半球上偏北或南半球偏南） 。
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In addition , the ao index released by american climate prediction center ( cpc aoi ) fails to reflect the summer ao mode . in this paper , the time series of the leading principal component of the summertime ( june - september ) surface level pressure anomaly field over the domain poleward of 20 n is defined as the summertime ao index 此外，美国气候预测中心发布的全年北极涛动月指数不能表现夏季北极涛动型，本文将北半球热带外地区( 20 n以北)夏季( 6 - 9月)海平面气压场eof主模态的时间序列定义为夏季北极涛动指数。
