Running the SILAM model comparatively with ECMWF and HIRLAM meteorological fields: A case study in Lapland

Abstract

The reproduction of an excessive aerosol event recorded during a measurement campaign carried out in April-May 2003 at the Värriö monitoring station (Finland, Eastern Lapland) was studied with the SILAM model. Both the Lagrangian and Eulerian kernels and ECMWF and HIRLAM (of FMI) meteorological fields were used. Applying adjoint modelling technique, the source of aerosol peak was identified as the Cu-Ni smelters of the Pechenganickel Enterprize (city of Nickel, Murmansk region, Russia) Nikel Metallurgy factory, Russia, about 200km north of measurement site. In forward runs, the plume from Nikel matched the measurement site, except the Lagrangian run with ECMWF fields. Differences in concentrations and duration of modeled peak were significant between the Lagrangian and Eulerian runs and different meteorological data. © 2011 Springer Berlin Heidelberg.