Paul J. Crutzen

TL;DR: In this article, the authors used a fast Proton Transfer Reaction Mass Spectrometry (PTR-MS) instrument for analysis of the Mediterranean holm oak (Quercus ilex L).

TL;DR: An average tropospheric OH concentration in the Northern Hemisphere of about 3 × 105 cm −3 is not in disagreement with present photokinetic information as mentioned in this paper, implying an increase in H 2O concentrations and a decrease in ozone concentrations in the upper stratosphere.

TL;DR: In this paper, a global three-dimensional model for studies of the tropospheric chemistry of H ox, ozone, and their precursors is thoroughly evaluated with available observations of 15 species from surface stations and/or aircraft campaigns.

TL;DR: The occurrence of mass-independent fractionation in the reaction of CO with OH raises fundamental questions about kinetic processes and is a useful marker for the degree to which CO in the atmosphere has been reacting with OH.

TL;DR: In this paper, an aircraft measurement program was undertaken in the savanna regions of central South America in the dry season of 1980 to investigate the atmospheric effects of large-scale biomass burning, and smoke from the fires was found to be largely confined within an approximately 3-km-deep boundary layer capped by a subsidence inversion or a stable layer.