Hans-Werner Jacobi

TL;DR: In the polar regions, unique photochemistry converts inert halide salt ions (e.g. Br−) into reactive halogen species that deplete ozone in the boundary layer to near zero levels as discussed by the authors.

TL;DR: In this paper, the authors consider the nature of snow at a fundamental, physical level; photochemical processes within snow and the caveats needed for comparison to atmospheric photochemistry; our current understanding of nitrogen, oxidant, halogen and organic photochemistry within snow; the current limitations faced by the field and implications for the future.

TL;DR: In this paper, a Chemical Aqueous Phase Radical Mechanism (CAPRAM) coupled to the RADM2-mechanism is used for modeling tropospheric multiphase chemistry.

TL;DR: In this article, the potential of remote sensing methods to obtain information on some snow physical variables such as grain size, liquid water content and snow depth is discussed, and the possibilities for and difficulties of building a snow photochemistry model by adapting current snow physics models are explored.

TL;DR: A review of physical processes and chemical reactivity in surface snow with relevance to polar regions is presented in this paper, focusing on impurities in distinct compartments of surface snow, such as snow crystals, grain boundaries, crystal surfaces, and liquid parts.