Jack Atkinson

Jack Atkinson
University of Cambridge | Cam · Institute of Computing for Climate Science

About

6
Publications
650
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24
Citations
Introduction
I am a researcher in the Space Weather and Atmosphere group at the British Antarctic Survey investigating the modelling of the Earth's radiation belts. I use a numerical modelling approach for theoretical equations alongside the use of satellite datasets. See more on my website: https://www.jackatkinson.net

Publications

Publications (6)
Article
Full-text available
As the number of satellites on orbit grows it is increasingly important to understand their operating environment. Physics‐based models can simulate the behavior of the Earth's radiation belts by solving a Fokker‐Planck equation. Three‐dimensional models use diffusion coefficients to represent the interactions between electromagnetic waves and the...
Article
Full-text available
We investigate the flow within a liquid-metal battery induced by an externally imposed magnetic field, B0. An analytical model for laminar flow is proposed and this is found to be in excellent agreement with numerical simulations, not only for weakly-forced steady flow, but also for the time-averaged velocity in more strongly forced flows where the...
Article
Full-text available
We consider the life cycle of an axisymmetric laminar thermal starting from the initial condition of a Gaussian buoyant blob. We find that, as time progresses, the thermal transitions through a number of distinct stages, undergoing several morphological changes before ending up as a vortex ring. Whilst each stage is interesting in its own right, on...
Thesis
This thesis comprises a series of investigations into isolated vortices that exist within the atmosphere. It consists of numerical and experimental investigations backed up by mathematical analysis. The main thrust of the work is in using laminar analogues of complex phenomena to aid the understanding of the key physical processes involved. The fir...
Article
Full-text available
We consider axisymmetric rotating convection in a cylindrical domain, focusing on the eye that can form at the center of a cyclonic vortex. Upon increasing the thermal forcing we observe that the system undergoes a Hopf bifurcation from a state with a steady eye to one in which the eye oscillates. For an aspect ratio, Ekman number, and Prandtl numb...

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