School of Earth Sciences, University of Bristol, Queen's Road, Bristol BS8 1RJ, United Kingdom
Atmospheric, Oceanic and Planetary Physics, University of Oxford, Oxford, United Kingdom
Laboratoire de Météorologie Dynamique (LMD) ; CNRS - INSU - Polytechnique - X - École normale supérieure - Paris (ENS Paris) - Université Pierre et Marie Curie - Paris 6 (UPMC)