Sergey A. Nizkorodov

TL;DR: Understanding of the climate-related properties of atmospheric OC is still incomplete and the specific ways in which OC impacts atmospheric environment and climate forcing are just beginning to be understood.

TL;DR: In short, solar radiation can provide the energy to initiate reactions while atmospherically available surfaces or condensed phases may act to reduce the required energy for a given photochemical pathway, for instance, by allowing a longer wavelength for reaction of species associated with a surface or bulk phase environment.

TL;DR: In this paper, secondary organic aerosols (SOA) generated from the ozone and hydroxyl radical (OH)-initiated oxidation of various biogenic and anthropogenic precursors were exposed to humid air containing approximately 100 ppb of gaseous ammonia (NH3), with the extent of browning ranging from no observable change (isoprene SOA) to visible change in color (limonene SOA).

TL;DR: In this paper, the authors investigated long-term chemical aging of model biogenic secondary organic aerosol (SOA) prepared from the ozonolysis of terpenes using electrospray ionization mass spectrometry (ESI-MS), UV-visible spectroscopy, Fourier transform infrared (FTIR), NMR, and three-dimensional fluorescence.

TL;DR: The effect of photolysis on the molecular composition, mass absorption coefficient, and fluorescence of secondary organic aerosol (SOA) prepared by high-NOx photooxidation of naphthalene (NAP SOA) is examined to emphasize the highly variable and dynamic nature of different types of atmospheric BrC.