Franz Rohrer

TL;DR: In this article, the conversion efficiency of various RO2 species to HO2 is investigated and it is shown that interference from these RO2 radicals can be suppressed to values below 20 % relative to the HO2 detection sensitivity.

TL;DR: In this article, a 16-hour dark experiment was conducted with temperatures at 289-301 K, and maximum concentrations of 11 ppb isoprene, 62.4 ppb O3 and 31.1 ppb NOx.

TL;DR: In this article, the first wintertime in situ measurements of hydroxyl (OH), hydroperoxy ( HO2 ) and organic peroxy( RO2 ) radicals were presented. But, they largely underestimated HO2 and RO2 concentrations by factors up to 5 during pollution episodes, indicating a deficit in understanding of the gas phase chemistry in the high NOx regime.

TL;DR: In this article, a simple quasi-two-dimensional model is used to study the zonal distribution of NOx, which includes vertical transport in the form of eddy diffusion and deep convection, zonal transport by a vertically uniform wind, and a simplified chemistry of NO, NO2 and HNO3.

TL;DR: In a sunlit layer separated from Earth’s surface processes by temperature inversion, high HONO concentrations are found providing evidence for a strong gas-phase source of HONSO consuming nitrogen oxides and potentially hydrogen oxide radicals.