Christopher D. Cappa

TL;DR: It is shown that the rate of particle emission during normal human speech is positively correlated with the loudness (amplitude) of vocalization, and the phenomenon of speech superemission cannot be fully explained either by the phonic structures or the amplitude of the speech.

TL;DR: It is shown that human exposure to carbonaceous aerosols of fossil origin is transitioning away from transportation-related sources and toward VCPs, and the focus of efforts to mitigate ozone formation and toxic chemical burdens need to be adjusted.

TL;DR: Direct measurements show that ambient atmospheric particulate black carbon absorbs less solar radiation than theory suggested, suggesting that many climate models may be overestimating the amount of warming caused by black carbon emissions.

TL;DR: In this paper, a review summarizes some of the important developments during the past decade in understanding secondary organic aerosol (SOA) formation, including formation of extremely low volatility organics in the gas phase, acid-catalyzed multiphase chemistry of isoprene epoxydiols, particle-phase oligomerization, and physical properties such as volatility and viscosity.

TL;DR: In this article, a strong temperature dependence of oxygen K-edge x-ray absorption fine structure features was observed for supercooled and normal liquid water droplets prepared from the breakup of a liquid microjet.