Local well-posedness of strong solutions to the non-isentropic compressible primitive equations with vertical diffusion
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866911462992117760 |
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| author | Klein, Rupert Li, Jinkai Liu, Xin Titi, Edriss S. |
| author_facet | Klein, Rupert Li, Jinkai Liu, Xin Titi, Edriss S. |
| contents | Due to the absence of dynamical equation in the vertical momentum component of the primitive equations (PEs) of atmospheric dynamics, the vertical component of the velocity can be recovered only from the information on the other physical quantities, while utilizing the hydrostatic balance. This causes one spatial derivative loss while leads to a stronger nonlinearity, comparing to the classic compressible Navier-Stokes equations. As a result, the mathematical analysis on the compressible primitive equations is mathematically more challenging than that on the compressible Navier-Stokes equations. In this paper, we consider the initial-boundary value problem to the non-isentropic compressible primitive equations with only vertical diffusion for the temperature, but without gravity. Local existence and uniqueness as well as the continuous dependence on the initial data of strong solutions are established for any suitably regular initial data. The initial velocity and pressure are assumed here to be of one order derivative higher regularity than that of the initial density. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_19801 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Local well-posedness of strong solutions to the non-isentropic compressible primitive equations with vertical diffusion Klein, Rupert Li, Jinkai Liu, Xin Titi, Edriss S. Analysis of PDEs Atmospheric and Oceanic Physics 76N10, 35D35, 76N06 Due to the absence of dynamical equation in the vertical momentum component of the primitive equations (PEs) of atmospheric dynamics, the vertical component of the velocity can be recovered only from the information on the other physical quantities, while utilizing the hydrostatic balance. This causes one spatial derivative loss while leads to a stronger nonlinearity, comparing to the classic compressible Navier-Stokes equations. As a result, the mathematical analysis on the compressible primitive equations is mathematically more challenging than that on the compressible Navier-Stokes equations. In this paper, we consider the initial-boundary value problem to the non-isentropic compressible primitive equations with only vertical diffusion for the temperature, but without gravity. Local existence and uniqueness as well as the continuous dependence on the initial data of strong solutions are established for any suitably regular initial data. The initial velocity and pressure are assumed here to be of one order derivative higher regularity than that of the initial density. |
| title | Local well-posedness of strong solutions to the non-isentropic compressible primitive equations with vertical diffusion |
| topic | Analysis of PDEs Atmospheric and Oceanic Physics 76N10, 35D35, 76N06 |
| url | https://arxiv.org/abs/2602.19801 |