In the stratosphere, the ozone (O3) plays a role of natural and beneficial screen in relation to the harmful effects of ultraviolet (UV) for the organic matter (= good ozone). In the troposphere, O3 is a pollutant that is produced during the atmospheric photo-oxidation of ozone precursors: Volatile Organic Compounds (VOCs) and nitrogen oxides (NOx) mainly emitted by anthropogenic activities (= ...

China's twelfth Five-Year Plan included pollution control measures with a goal of reducing national emissions of nitrogen oxides (NOx) by 10% by 2015 compared with 2010. Multiple linear regression analysis was used on 11-year time series of all nitrogen dioxide (NO2) pixels from the Ozone Monitoring Instrument (OMI) over 18 NO2 hotspots in China. The regression analysis accounted for variations...

Investigations of perovskite oxides triggered by the discovery of high-temperature and unconventional superconductors have had crucial roles in stimulating and guiding the development of modern condensed-matter physics. Antiperovskite oxides are charge-inverted counterpart materials to perovskite oxides, with unusual negative ionic states of a constituent metal. No superconductivity was reporte...

Fossil fuel combustion and fertilizer application in the United States have substantially altered the nitrogen cycle, with serious effects on climate change. The climate effects can be short-lived, by impacting the chemistry of the atmosphere, or long-lived, by altering ecosystem greenhouse gas fluxes. Here we develop a coherent framework for assessing the climate change impacts of US reactive ...

This paper studies the application of radial basis functions to predict nitrogen oxides 24 hours in advance. The forecast interval was chosen for practical regulatory reasons. The two study areas are in Valencia (Spain), where these pollutants have reached critical levels, and there has been a significant connection between them and several health problems. The models use nitrogen oxide concent...

The reversible gas phase reaction dinitrogen tetroxide to nitrogen dioxide is very suitable for an integrated physical chemistry project incorporating thermodynamics, statistical mechanics, spectroscopy, and kinetics. Furthermore, nitrogen oxides are molecules of current interest given their important role in atmospheric chemistry. Only relatively common equipment and chemicals are required for...