Harald Saathoff

TL;DR: In this article, aethalometry (black carbon, BC), photoacoustic soot detection (BC), photoelectron emission, and extinction measurement at 473 nm were used to determine particle mass concentrations.

TL;DR: In this paper, a controlled expansion cooling run with airborne, ternary solution droplets composed of, (i), sodium chloride, oxalic acid, and water (NaCl/OA/H2O) and, (ii), sulphuric acid and oxal acid diyhdrate was conducted in the AIDA aerosol and cloud chamber at initial temperatures of 244 and 235 K.

TL;DR: In situ Fourier transform infrared (FTIR) extinction spectra of airborne alpha-NAD microparticles generated by two different methods were recorded in the large coolable aerosol chamber AIDA of Forschungszentrum Karlsruhe and indicate that strongly aspherical alpha- NAD crystals are obtained when supercooled nitric acid solution droplets freeze and grow slowly.

TL;DR: In this paper, a pore condensation and freezing (PCF) mechanism was proposed to allow formation and stabilization of ice germs in a coal fly ash particle without the formation of macroscopic ice.

TL;DR: The interaction of laser-generated plasma channels with water and ice clouds observed in a large cloud simulation chamber induced a surprisingly strong effect of ice multiplication, which might open new perspectives for remote sensing of water vapor and ice in the upper troposphere.