Stable Radiation Baroclinic Potential Vortices Under Basic Flow Zonal Shear

LIU Nan; SONG Jian

doi:10.21656/1000-0887.440168

Volume 45 Issue 1

Jan. 2024

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LIU Nan, SONG Jian. Stable Radiation Baroclinic Potential Vortices Under Basic Flow Zonal Shear[J]. Applied Mathematics and Mechanics, 2024, 45(1): 120-126. doi: 10.21656/1000-0887.440168

Citation:

LIU Nan, SONG Jian. Stable Radiation Baroclinic Potential Vortices Under Basic Flow Zonal Shear[J]. Applied Mathematics and Mechanics, 2024, 45(1): 120-126. doi: 10.21656/1000-0887.440168

Citation:

LIU Nan, SONG Jian. Stable Radiation Baroclinic Potential Vortices Under Basic Flow Zonal Shear[J]. Applied Mathematics and Mechanics, 2024, 45(1): 120-126. doi: 10.21656/1000-0887.440168

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Stable Radiation Baroclinic Potential Vortices Under Basic Flow Zonal Shear

doi: 10.21656/1000-0887.440168

LIU Nan,
SONG Jian^,

College of Science, Inner Mongolia University of Technology, Hohhot 010051, P.R.China

Received Date: 2023-06-01
Rev Recd Date: 2023-10-02
Publish Date: 2024-01-01

Abstract

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 baroclinic 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 westward 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.
- quadratic shear flow,
- stable radiation,
- baroclinic vortex

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References(25)

References

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