2011年“8.20”雅安暴雨过程的波能特征研究

针对雅安暴雨发生的机制问题，利用NCEPANCAR再分析资料，通过波包传播的诊断方法，对2011年8月20日～8月21日雅安地区暴雨过程期间波包传播和积累进行了分析与研究。结果表明，波包的分布及传播能明显反映出降水过程的发生、维持和结束特征。波包的大值区域与强降水区域基本一致，强降水过程基本上产生于波包扰动能量积累的高值时段或处于高位相阶段。波包值的经向和纬向传播特征表明，“8．20”雅安地区暴雨过程主要是高原地区的冷空气和孟加拉湾向盆地输送的暖湿空气的共同作用。

Perturbation Analysis of Moore–Penrose Quasi-linear Projection Generalized Inverse of Closed Linear Operators in Banach Spaces

In this paper, we investigate the perturbation problem for the Moore-Penrose bounded quasi-linear projection generalized inverses of a closed linear operaters in Banach space. By the method of the perturbation analysis of bounded quasi-linear operators, we obtain an explicit perturbation theorem and error estimates for the Moore-Penrose bounded quasi-linear generalized inverse of closed linear operator under the T-bounded perturbation, which not only extend some known results on the perturbation of the oblique projection generalized inverse of closed linear operators, but also extend some known results on the perturbation of the Moore-Penrose metric generalized inverse of bounded linear operators in Banach spaces.