This project, carried out as part of the LPHYS2163 course, explores Rossby waves: atmospheric oscillations influenced by variations in the Coriolis force. A numerical approach is used to model their behaviour and observe their evolution over time.
The project implements a numerical simulation of Rossby waves by solving the absolute vorticity equations in a barotropic fluid of constant depth. The main steps include:
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Derivation of the vorticity and current function equations
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Discretisation of the model using finite differences
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Simulation and analysis of the temporal evolution of relative vorticity
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Sensitivity tests on various parameters (wavelength, latitude, beta coefficient)
Run the main script to start the simulation: Barotropic_Rossby_waves.py
The figures produced illustrate the temporal evolution of the relative vorticity and velocity fields, highlighting the properties of Rossby waves.
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Rossby waves: http://euromet.meteo.fr/euromet/french/nwp/n2d00/n2d00009.htm
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Marshall, J., Plumb, R. A. (2016). Atmosphere, ocean and climate dynamics: an introductory text. Academic Press.