Application of the CHIMERE-WRF Model Complex to Study the Radiative Effects of Siberian Smoke Aerosol in the Eastern Arctic

Abstract We describe a computational technology for studying the effects of aerosol-radiation interaction and calculating regional estimates direct (DRE) semidirect radiative (SDRE) biomass burning (BB) aerosol based on simulations with CHIMERE chemistry transport model coupled WRF meteorological model. The was applied to numerical Siberian in eastern Arctic period July 16–31, 2016. show that smokes, whole, had significant cooling effect atmosphere due DRE, value which at top was, average, −6.0 W m −2 , being minimal over snow-ice cover ocean (−1.2 ). At same time, contribution BB DRE balance is found be offset certain extent by SDRE, positive (2.0 ), average. SDRE formed as result multihour processes plays most important role covers, where it exceeds absolute value. It has been shown BBA our experiments mainly scattering (rather than absorption) radiation particles.