L. K. Xue, T. Wang, J. Gao, A. J. Ding, X. H. Zhou, D. R. Blake, X. F. Wang, S. M. Saunders, S. J. Fan, H. C. Zuo, Q. Z. Zhang, and W. X. Wang Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hong Kong, China Environment Research Institute, Shandong University, Ji’nan, Shandong, China Chinese Research Academy of Environmental Sciences, Beijing, China Institut...

It has long been recognised that pollutant gases cause significant impacts on crops and studies conducted revealed that ground-level ozone is responsible for most of the crop-yield losses from air pollutants whereby losses from other pollutants are minimal, relative to ozone (Fuhrer et al., 1997; Pleijel et al., 1998; Ishii et al, 2004). Ozone is a secondary pollutant resulting from photochemic...

Ground-level ozone concentration is a key indicator of air quality. There may exist sudden changes in ozone concentration data over a long time horizon, which may be caused by the implementation of government regulations and policies, such as establishing exhaust emission limits for on-road vehicles. To monitor and assess the efficacy of these policies, we propose a methodology for detecting ch...

A novel approach to retrieving total ozone columns from the ERS2 GOME (Global Ozone Monitoring Experiment) spectral data has been developed. With selected GOME wavelength regions, from clear and cloudy pixels alike plus orbital and instrument data as input, a feed-forward neural network was trained to determine total ozone in a one-step inverse retrieval procedure. To achieve this training, gro...

millennium, a type of air pollution called ground-level ozone threatens future growth. Texas cities that do not meet U.S. Environmental Protection Agency (EPA) standards for this type of pollution could face sharp restrictions on new businesses and could bear significant new environmental costs. Many Texas cities are either in nonattainment with EPA guidelines for ozone or close to it. Although...

Ground-level ozone (O3) is mainly produced during daytime in the presence of ultraviolet (UV) light and later destroyed by nitrogen oxides nighttime. However, pollution caused excessive use artificial lights may disrupt chemistry night-time ground-level O3 providing enough energy to initiate nighttime production. In this study, (7 p.m. 7 a.m.) O3, oxide (NO), dioxides (NO2) concentrations were ...

The current knowledge regarding the effect of global climate change on rice-paddy methane (CH4) emissions is incomplete, partly because information is limited concerning the mechanism of the microbial response to elevated ground-level ozone (O3). A field experiment was conducted in the China Ozone Free-Air Concentration Enrichment facility in a rice-wheat rotation system to investigate the resp...