Emma Suckling and Hailiang Du presented at the 2013 SIAM Conference on Mathematical and Computational Issues in the Geosciences, 17-20 June 2013, Padova, Italy.  Hailiang Du’s talk was entitled ‘Pseudo-Orbit Data Assimilation for Atmospheric GCMs’, Abstract. Emma Suckling’s talk was entitled ‘Pseudo-Orbit Gradient Descent for Lagrangian Data Assimilation’, Abstract.