David D. Parrish

TL;DR: The relationship between O3 and NOx (NO + NO2) which was measured during summer and winter periods at Niwot Ridge, Colorado, has been analyzed and compared to model calculations.

TL;DR: In this article, the authors report on concentrations of key trace gases measured concurrently at a rural site in the eastern USA during the summer of 1986 and a modelling study conducted to analyse these measurements.

TL;DR: In this paper, an up-to-date overview of tropospheric ozone distribution and trends is presented, along with some new and extended analyses using well-known and referenced datasets to draw connections between ozone trends and distributions in different regions of the world.

TL;DR: In this paper, measurements of photochemical trace species were made at a coordinated network of seven rural sites in the eastern United States and Canada during the summer of 1988, at six of these sites concurrent measurements of ozone and the sum of reactive nitrogen species, NOy, were made, and at four of the sites a measure for the reaction products of the NOx oxidation was obtained.

TL;DR: In this article, the initial hydrocarbon reactivity in petrochemical source plumes in the Houston, TX, metropolitan area is primarily due to routine emissions of the alkenes propene and ethene.