2011 Puyehue-Cordón Caulle Complex eruption Atmospheric movements Boundary conditions Dispersions ERA Interim reanalysis FALL3D Image reconstruction Initial and boundary conditions Los Rios [Chile] MODIS Meteorological simulations Moderate resolution imaging spectroradiometer datum NCEP-GFS analysis Puyehue Puyehue-Cordon Caulle Radiometers Reanalysis Satellite imagery Southern Volcanic Zone Volcanic ash dispersions Volcanoes WRF Weather forecasting boundary condition climate modeling dispersion satellite data volcanic ash volcanic eruption weather forecasting