Section: New Results
Adjoint modelling and sensitivities computations for the Chernobyl accident
Adjoint modelling and sensitivities computations have benn carried out for the Chernobyl accident. This work has been carried out as a research training period (IMI department of ENPC) for three of the ENPC students (advisor: Marc Bocquet.) This work aimed at building and validating several tools dedicated to sensitivity analysis of activity measurements with respect to many forcing fields, especially sources. A similar work had been carried out in 2004-2005 on the dispersion of mercury [Roustan, Bocquet]. The goal is to demonstrate that such an approach could also be applied on a radionuclide dispersion episode. Most of the work has focused on the computation of adjoint solutions related to wet deposition (the wet scavenging using a Belot or relative humidity parameterization.) In addition to the results obtained for the sensitivity analysis of the Chernobyl accident, this work can be understood as a prelude to inverse modelling of deposited activity.