The paper “On the geometry arising in some meteorological models in two and three dimensions“, co-authored by Bertrand Banos (University of Betagne Sud, France), Volodya Roubtsov (University of Angiers, France), and Ian Roulstone, has been published as a chapter in “Nonlinear PDEs, Their Geometry, and Applications“.  This volume is the proceedings of the Wisla 18 Summer School which was held in Wisla Poland in August 2018 at which Ian was also a lecturer.  A link to the published volume is here.