Author(s)

C.-H. Lu & J.S. Chang

Abstract

Previous model studies suggested that indicator species could be used to assess the sensitivities of ozone to reductions in precursors emissions and proposed threshold criteria to distinguish VOC- and NOx-sensitive regimes. Other studies have assumed the universality of these threshold criteria and have compared local observed indicator species with previously established criteria to assess ozone sensitivities. In this study, the results of SARMAP Air Quality Model (SAQM) simulations in the San Joaquin Valley, California, USA, are used to investigate the applicability of indicator species to assess ozone sensitivities. Threshold criteria of indicator species (NOy, Og/NOz, HCHO

Keywords