也谈Rossby长波理论及其“悖论”  

Discussion on the Issue of Rossby Waves Theory and Its “Paradox”

作　　者：陶祖钰[1] 费海燕[2] Tao Zuyu Fei Haiyan(Department of Science of Atmosphere and Ocean, School of Physics, Peking University, Beijing 100871 China Meteorological Administration Training Centre, Beijing 100081)

机构地区：[1]北京大学物理学院,北京100871 [2]中国气象局气象干部培训学院,北京100081

出　　处：《气象科技进展》2017年第5期27-31,共5页Advances in Meteorological Science and Technology

基　　金：中国气象局预报员专项(CMAYBY2017-092);国家自然科学基金(41475042)

摘　　要：鉴于罗斯贝长波理论无辐散假定与物理学波动概念之间的矛盾,文章讨论了牵连涡度和相对涡度之间的相互转换实际上都需要通过散度才能实现。从地转适应理论的角度看,罗斯贝无辐散的假定实际上是假定地转适应过程无限快,和物理学的波动概念并不抵触。最后从流线和轨迹的区别分析了长波中散度的分布特征及其与长波移速在物理上的关联。Since the contradiction between the nondivergent assumption of Rossby waves theory and the concept of physics fluctuation, this paper discusses that the mutual conversion between implicated vorticity and relative vorticity is practically required by divergence. From the view of the geostrophic adaptation theory, the nondivergent assumption of Rossby is actually assumed that the process of the geostrophic adaptation is infinitely fast, which does not contradict the concept of physics fluctuation. Finally, the distribution characteristics of divergence in long wave and its physical correlation with long wave velocity are analyzed based on the difference between streamline and trajectory.

关 键 词：罗斯贝长波 地转适应 散度 涡度 

分 类 号：P433[天文地球—大气科学及气象学]