应用数学和力学2024，Vol.45Issue(1)：120-126,7.DOI:10.21656/1000-0887.440168
基本流纬向切变下的稳定辐射斜压位涡
Stable Radiation Baroclinic Potential Vortices Under Basic Flow Zonal Shear
摘要
Abstract
In large-scale vertical shear,a new type of stably propagating baroclinic vortex was embedded,to radiate Rossby waves without attenuation.Numerical simulations were carried out based on the 2-layer model in the beta-effect plane,by means of the variation of the dispersion relation between the zonal quadratic shear flow and the stable radiation of the baroclinic fluid.The effect of the zonal quadratic shear flow on the baroclin-ic potential vortex instability of steady radiation,was derived.At the same time,the Rossby waves generated by the vortices cause the propagation of the meridional vortices and other coherent heat flows.For the west-ward flow of the subtropical ocean,with the latitude change,the approximate solution of the trigonometric function gives the numerical solution of the relevant Bessel function.The results show that,the quadratic shear flow reduces the PV gradient in the upper layer and continues to extend the life of the vortex.关键词
二次剪切流/稳定辐射/斜压涡旋Key words
quadratic shear flow/stable radiation/baroclinic vortex分类
数理科学引用本文复制引用
刘楠,宋健..基本流纬向切变下的稳定辐射斜压位涡[J].应用数学和力学,2024,45(1):120-126,7.基金项目
国家自然科学基金(42275052) （42275052）
内蒙古自治区高等学校科学研究重点项目(NJZZ23087) （NJZZ23087）
内蒙古自治区研究生科研创新项目(JY20220388) （JY20220388）
