Felipe D. Lopez-Hilfiker

TL;DR: It is found that a direct pathway leads from several biogenic VOCs, such as monoterpenes, to the formation of large amounts of extremely low-volatility vapours, helping to explain the discrepancy between the observed atmospheric burden of secondary organic aerosol and that reported by many model studies.

TL;DR: The sampling protocol, detection limits and observations from the first aircraft deployment for an instrument of this type, which took place aboard the NOAA WP-3D aircraft during the Southeast Nexus field campaign, are presented.

TL;DR: The Filter Inlet for Gases and AEROsols (FIGAERO) as mentioned in this paper is a Teflon filter inlet that allows measurement of both gas and particle molecular composition when coupled to mass spectrometric, chromatographic or optical sensors.

TL;DR: Quantitative online measurements of five nitrated phenol compounds in ambient air show that these five NPs are potentially important contributors to absorption at 370 nm measured by an aethalometer and account for 4 ± 2% of UV light absorption by brown carbon.

TL;DR: It is found that never-before-identified low-volatility organic species, which are highly functionalized, explain a major fraction of the total particle nitrate mass measured by the traditional aerosol mass spectrometer, shows that these organic nitrates are likely derived from oxidation of biogenic hydrocarbons and persist in the particle phase for only a few hours.