Contrasting Near-Surface Ozone Pollution in Wet and Dry Year over China.

ABSTRACT: The near-surface ozone concentration was evaluated in two typical years with contrasting climatic impacts over the China region induced by El Niño-Southern Oscillation, which had either dry conditions (drought) with intense solar radiation and higher temperatures or wet conditions with opposite meteorological conditions. Surface ozone was observed to aggravate notably by 30% over Northern China in summer and by 50% over Eastern China in autumn in the dry year compared to the wet year. The ozone aggravation was found to be mainly ascribed to the reduced precipitation (relative humidity), enhanced solar radiation and increased temperature rather than primary emission (indicated by carbon monoxide). The health impacts showed the mortality attributable to ozone sharply increased by ~55% in Gua

SUBMITTER: Ding S 

PROVIDER: S-EPMC9859381 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature