The chemistry of the atmosphere encompasses a vast number of reactions acting on a
plethora of intermediates. These reactions, occurring sequentially and in parallel, give rise to …

The review of major 3-D global and regional real-time air quality forecasting (RT-AQF)
models in Part I identifies several areas of improvement in meteorological forecasts …

Satellite-based retrievals of tropospheric NO 2 columns are widely used to infer NO x (≡
NO+ NO 2) emissions. These retrievals rely on model information for the vertical distribution …

Nitric acid (HNO3) synthesis is an important industrial process but typically requires multiple
energy-intensive steps, including the synthesis and subsequent oxidation of ammonia. Here …

Nitrous acid (HONO) is the major precursor of hydroxyl (OH) radicals to initiate tropospheric
chemistry leading to formation of secondary pollutants. The sources of atmospheric HONO …

We use in situ observations from the Interagency Monitoring of PROtected Visual
Environments (IMPROVE) network, the Midwest Ammonia Monitoring Project, 11 surface site …

Measurements of ambient OH and HO 2 radicals were performed by laser induced
fluorescence (LIF) during CAREBei**g2006 (Campaigns of Air Quality Research in Bei**g …

Triggered by recent developments from laboratory and field studies regarding major NO x
sink pathways in the troposphere, this study evaluates the influence of chemical …

We demonstrate time-resolved frequency comb spectroscopy (TRFCS), a new broadband
absorption spectroscopy technique for the study of trace free radicals on the microsecond …

The smog chamber/Fourier-transform infrared spectroscopy (FTIR) technique was used to
measure the rate coefficients k (Cl+ CF3CHClOCHF2, isoflurane)=(4.5±0.8)× 10–15, k (Cl+ …