Interactive comment on “Chemical analysis of refractory stratospheric aerosol particles

Interactive comment on “ Chemical analysis of refractory stratospheric aerosol particles collected within the arctic vortex and inside polar

Interactive comment on “Chemical analysis of refractory stratospheric aerosol particles collected within the arctic vortex and inside polar stratospheric clouds” by Martin Ebert et al

This is a very interesting paper that presents nice results on the detection of solid particles in the stratosphere. We have two short comments: 1) Page 15 line 19 (part 4.1;7 Soot): the author proposed possible sources for soot particles in the stratosphere. The (transient) presence of soot in the middle stratosphere and their possible origins, including meteoritic material, were also obtained...

Interactive comment on “Chemical analysis of refractory stratospheric aerosol particles collected within the arctic vortex and inside polar stratospheric clouds” by Martin Ebert et al

To point 2: The deduction of number distributions/mass mixing ratios from single particle data is linked with rather large uncertainties. Nevertheless, we have added the results of our calculation and the discussion of these values (see end of comment). The mass mixing ratio will be around 0.1 ppbm for all nonvolatile particles and the dN/dlogDP for a particle diameter of 0.75 μm is around 10ˆ-...

Size distribution and scattering phase function of aerosol particles retrieved from sky brightness measurements

Ground-based measurements of the solar transmission and sky radiance in a horizontal plane through the Sun are taken in several geographical regions and aerosol types: dust in a desert transition zone in Israel, sulfate particles in Eastern and Western Europe, tropical aerosol in Brazil, and mixed continental/maritime aerosol in California. Stratospheric aerosol was introduced after the eruptio...

Mathematical analysis of the stratospheric photochemical system

[1] The impact of odd chlorine (Cly) and odd nitrogen (NOy) perturbations (resulting from human activities) and of enhanced H2O-H2SO4 aerosol load (associated with volcanic activity) on stratospheric ozone (25 km altitude, midlatitudes) is assessed by using a chemical box model in which key heterogeneous reactions on the surface of sulfate aerosol particles are taken into account. The model sho...