地形拖曳与举力ppt.ppt

地形拖曳与举力;Xu, X., M. Xue, and Yuan Wang(2013): Gravity wave momentum flux in directional shear flows over three-dimensional mountains: Linear and nonlinear numerical solutions as compared to linear analytical solutions. J. Geophy. Res., 118,1–12, DOI: 10.1002/jgrd.50471 Xin Xu, Yuan Wang(Corresponding Author) and Ming Xue, 2012: Momentum Flux and Flux Divergence of Gravity Waves in Directional Shear Flows over Three-dimensional Mountains. J. Atmos. Sci. 69(12): 3733-3744;Scientific Motivation;McFarlane(1987);Polar Westerly Bias;引言（三）重力波拖曳参数化示意图;Surface Drag;地形重力波拖曳（TGWD）的双波参数化方法可有效解决西风偏差 (westerly bias)的问题;Scientific Question;Scientific Question;Lifting Effect;Method;Theoretical Framework(Eq.+ Perturbation);Theoretical Framework (Wave);Theoretical Framework (Wave);Observation of Mountain Waves;Theoretical Framework (Drag );Theoretical Framework (Drag );Theoretical Framework (Lifting );Example;Example;Illustration;Discussion;谢 谢！;Xin Xu, Yuan Wang(Corresponding Author) and Ming Xue, 2012: Momentum Flux and Flux Divergence of Gravity Waves in Directional Shear Flows over Three-dimensional Mountains. J. of the Atmospheric Sciences(JAS), 69(12): 3733-3744 唐锦赟：由复杂地形触发的重力波地表拖曳问题的计算及其参数化方案设计的理论研究（硕士论文） 王宛亭：中国中东部地区Pielke地形谱解析及大气重力波拖曳（硕士论文）;