Accueil > Actualités > Séminaires > Séminaire de Masayuki Takigawa au LISA


Titre : A review of the model comparison of transport and deposition of radioactive materials released to the environment by the Tokyo Electric Power Company’s Fukushima Daiichi Nuclear Power Plant
Nom du conférencier : Masayuki Takigawa
Son affiliation : Department of Environmental Geochemical Cycle Research (DEGCR) / JAMSTEC, Yokohama, Japan
Laboratoire organisateur : LISA
Date et heure : 21-11-2014 11h40
Lieu : UPMC/Jussieu - Salle de réunion du LATMOS - Tour 45-46, 4e étage
Résumé :

This review summarizes the current activity of the regional atmospheric model groups. The 9 members of the Science Council of Japan Working Group for regional models provided 9 simulations. The model domain, horizontal and vertical resolution, meteorological fields, and source terms were different in each model, and a portion of the differences in the models might have been caused by differences in the model configurations. For more detailed analyses, a series of sensitivity tests with the same configuration (source term, meteorological fields, etc.) should be performed.
The results are summarized as follows:
1) meteorological fields play an important role in radionuclide deposition, and the differences in the model treatments of deposition and in the configuration of meteorological models, such as in their microphysics and convection parameters, might cause a large difference in the horizontal distribution of accumulated deposition;
2) the wet deposition process has a strong impact on the reproducibility of deposition, especially on March 15;
3) ensemble means might be useful for the estimation of accumulated deposition.

Contact :

Juan Cuesta, LISA/IPSL,