The Plume Volume Molar Ratio Method for Determining NO2/NOx Ratios in Modelingpart 11: Evaluation Studies

摘要

A previous paper` discusses the methodology for a new method for deriving the nitrogen dioxideitrogen oxide (NO2/NOx) ratio in plumes that originally are composed mainly of (NOx). It is called the Plume Volume Molar Ra- tio Method (PVMRM). This paper documents its perfor- mance against six different data sets. These performance evaluations show that the PVMRM can realistically pre- dict the NO2 fraction at close-in receptors yet still provide conservative estimates so that the air quality standards can be protected.