Modelling the influence of meteoric smoke particles on artificial heating in the D-region

Abstract. We investigate if the presence of meteoric smoke particles (MSPs) influences electron temperature during artificial heating in D-region. By transferring energy powerful high-frequency radio waves into thermal electrons, increases temperature. Artificial depends on height variation density. The MSPs can influence density through charging by which reduce number free electrons and even result regions with strongly reduced density, so-called bite-outs. simulate calculating intensity upward-propagating wave. at each is derived from balance wave absorption cooling elastic inelastic collisions neutral species. investigated including results a one-dimensional height-dependent ionospheric model that includes positively negatively charged ions, MSPs, singly photochemistry such as photoionization photodetachment. apply typical conditions find both magnitude profile heated above 80 km; however, this conditions. During night, leads to more efficient thus higher altitudes km. found differences up 1000 K for calculations without MSPs. When are present, decreases slowly. does not much affect below km night For day conditions, difference between less than 25 K. also runs using MSP profiles autumn, summer winter. night-time expected be 280 hotter autumn winter while sunlit D-region 8 cooler case, depending altitude. Finally, an investigation attachment efficiency shows significant impact amount chargeable dust consequently