... The air–sea exchange and oceanic cycling of greenhouse gases (GHG), including carbon dioxide (CO 2 ), nitrous oxide (N 2 O), methane (CH 4 ), carbon monoxide (CO), and nitrogen oxides (NO x = NO + NO 2 ), are fundamental in controlling the evolution of the Earth’s atmospheric chemistry and climate...

... of this policy on nitrogen oxides (NO x ) emissions, a minor waste by-product from combustion. A meta-analysis of changes in NO x emissions from hydrogen/natural gas blends used in gas burners is undertaken, with focus on mixtures between 5% and 20% v/v. Literature reports are highly variable: for a 5% hydrogen...

... and NO 2 formation. Volatile organic compounds, nitrogen oxides (NO x ), and fine particulate matter (PM 2.5 ) decreased significantly due to motorized trip reductions. In situ nitrogen oxide median surface mixing ratios declined by 70%, 67%, and 67% in Bogotá, Santiago, and São Paulo, respectively. NO 2...

... are contrasted with the full month’s record from this site. The loss of irradiance caused cooling of the surface air by ~3°C, and weakened convective and turbulent mixing. This resulted in a buildup of slow photoreactive gases (methane, short-chain non-methane hydrocarbons), as well as total nitrogen oxides...

... oxides, nitrogen oxides, particulate matter, organic matter and metals. The reduction of sulphur oxide emissions into the atmosphere using scrubber technology adds another dimension to the discussion, as this approach results in focused discharge of some pollutants to the surface water. A scoping...

... ± s.e. from the soil at UMBS was 0.54 ± 0.037 µmol m -2 s -1 using the gradient diffusion method and 0.71 ± 0.012 µmol m -2 s -1 using the eddy covariance method, and in a similar range as found for NWT. Observed snowpack-O 3 exchange was also similar to NWT. However, nitrogen oxides (NO x ) fluxes from...