点金 第四章： 中纬度的经向环流系统 Ferrel cell,baroclinic eddies and the westerly jet Reference reading: Vallis Chapter 11.7;PO Chapter 7.5第四章： 中纬度的经向环流系统 - Ferrel cell，baroclinic eddies and the westerly jet Reference reading: Vallis Chapter 11.7; PO Chapter 7.5