M. T. Baeza-Romero

TL;DR: In this paper, it has been shown that combustion ashes (coal fly ash, wood bottom ash, domestic bottom ash and coal bottom ash) nucleate ice in the immersion mode at conditions relevant to mixed-phase clouds.

TL;DR: In this paper, the authors present results from a comprehensive instrument comparison effort at two simulation chamber facilities in the US and Europe that included nine instruments, and seven different measurement techniques: broadband cavity enhanced absorption spectroscopy (BBCEAS), cavity-enhanced differential optical absorption spectrography (CE-DOAS), white-cell DOAS, Fourier transform infrared spectrographic (FTIR), laser-induced phosphorescence (LIP), solid phase micro extraction (SPME), and two separate instruments; for methyl glyoxal only because no significant response was observed

TL;DR: It is concluded that I 2O4 is the most plausible candidate to initiate nucleation, while the contribution of I2O5 in the initial steps is likely to be marginal and the high stability of the I2 O4-I2O4 dimer indicate that dimerisation of I3Oy is the key step in iodine oxide particle nucleation.

TL;DR: A strong dependence upon relative humidity was observed for uptake onto humic acid, with larger uptake coefficients seen at higher humidities, possible hypotheses for the humidity dependence include the changing liquid water content of the aerosol, a change in the mass accommodation coefficient or in the Henry's law constant.

TL;DR: A global aerosol model is used to estimate a range of values for the density of active sites that BC particles must have to be relevant for ice nucleation in the atmosphere, and shows that BC contributes at least several orders of magnitude less INP than feldspar and marine organic aerosol.