Sentences with phrase «nitrogen dioxide fell»

Not exact matches

By 2035, nitrogen dioxide levels in the city center's most polluted street were expected to fall by 74 percent, the proposal said.

Scientists estimate that one - third of the world's acid rain falls near the coasts, carrying some 100 million tons of nitrogen oxide, ammonia, and sulfur dioxide into the ocean each year.

As levels of ozone, nitrogen dioxide and particulate matter fell over time, so did the number of children who reported a daily cough, persistent congestion and other symptoms of irritated lungs.

Newland says that a fall in nitric oxide and nitrogen dioxide from clean air regulations could have slowed the production of OH.

Emissions of nitrogen dioxide and sulfur dioxide, the main sources of acid rain pollution, also fell by 38 percent and 14 percent, respectively.

According to the US Environmental Protection Agency, levels of lead, carbon monoxide, nitrogen dioxide, sulphur dioxide and particulates all fell between 1991 and 1992.

The models suggested that levels of air pollution would fall without the government having to do much as older diesel vehicles are replaced by newer ones that emit less nitrogen dioxide.

Now that it has been revealed German carmakers BMW, Volkswagen and Daimler had an organization test the effects of diesel fumes on monkeys, and in a separate test nitrogen dioxide on humans, Germany's politicians and media are all falling over themselves feigning outrage and moral indignation.

A new report evaluating air pollution trends at the nation's 100 largest electric power producers shows that emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) have fallen markedly in recent years, but carbon dioxide (CO2) emissions increased and will likely spike in coming years.

In freshwater systems, acidifying depositions occur following the release of nitrogen oxides (NOx) and sulfur dioxide (SO2) into the atmosphere, mainly from the combustion of fossil fuels, which then may fall in dry or wet form.