The chemical processing of pollutants emitted into the atmosphere leads to a variety of
oxidised products, which are commonly referred to as secondary pollutants. Such pollutants …

The techniques currently available to measure the ambient atmospheric concentrations of
O3, O3-precursors (including the odd-hydrogen free radicals), the oxidation products of …

Tropospheric O3 concentrations are functions of the chain lengths of NOx (NOx≡ NO+ NO2)
and HOx (HOx≡ OH+ HO2+ RO2) radical catalytic cycles. For a fixed HOx source at low …

Some of the approaches that have been developed in the Aeronomy Laboratory and used to
determine the rate and amount of ozone that is photochemically produced in the atmosphere …

We used a simple trajectory model and a three‐dimensional grid model to evaluate several
indicators that can be used to predict the sensitivity of odd oxygen production (P (Ox)) to …

The development, applications and intercomparisons of instrumentation and measurement
techniques for ground-based and airborne field studies of gas-phase tropospheric chemistry …

Laboratory characterizations of the peroxy radical chemical ionization mass spectrometer
(PerCIMS) instrument have been performed. The instrument functions by drawing ambient …

The free radicals OH, HO 2, RO 2, and NO 3 are known to be the driving force for most
chemical processes in the atmosphere. Since the low concentration of the above radicals …

In this study air masses are characterized in terms of their total OH reactivity which is a
robust measure of the" reactive air pollutant loading". The measurements were performed …

In this review article, recent understandings of the urban atmosphere are briefly presented,
focusing on NOx (NO and NO2), NO3 and HOx (OH and HO2), which are the key species for …