Impact of a priori information on IASI ozone retrievals and trends

Brice Barret, Laboratoire d'Aérologie, Université de Toulouse, CNRS, UPS, IRD, France, Toulouse, France, Helene Peiro, CERFACS, Toulouse, France, Emanuele Emili, CERFACS European Centre for Research and Advanced Training in Scientific Computation, Toulouse Cedex 01, France and Eric Le Flocgmoën, Université de Toulouse, CNRS, Laboratoire d'Aérologie, Toulouse, France