Congratulations to Tom O’Neill for passing his PhD viva on Monday 3rd August! Tom’s thesis is entitled “A rigorous analysis, via the Monge-Ampère equation, of the existence of classical solutions to the semigeostrophic equations with explicit Rossby number scaling“. The External Examiner was Professor Mikhail Feldman (University of Wisconsin) and the Internal was Ian Roulstone. Stephen Gourley chaired the viva. Tom‘s project was supervised by Bin Cheng. The image below shows one of the key equations from Chapter 3 of his thesis.