青藏高原地形重力波拖曳影响东亚春季降水的概念模型 (IMAGE) Science China Press Caption 青藏高原对流层中层的纬向地形重力波拖曳能够破坏大尺度西风气流的地转平衡,形成跨越高原的非地转次级经向环流。经向环流的上升支将低层空气垂直向上抽吸,使得高原南侧的气压降低、经向气压梯度增强,因此西南季风气流增强,将更多水汽输送至下游地区,最终导致东亚春季降水的增多。 Credit ©《中国科学》杂志社 Usage Restrictions Use with credit. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.