Sentences with phrase «sulfur dioxide concentrations»

Another intriguing piece of evidence comes from measurements of sulfur dioxide concentrations in the atmosphere, which were found to drop by a factor of ten between 1978 and 1986.

First was an improvement in the computer processing that transforms raw satellite observations from the Dutch - Finnish Ozone Monitoring Instrument aboard NASA's Aura spacecraft into precise estimates of sulfur dioxide concentrations.

Krotkov and his team now are able to more accurately detect smaller sulfur dioxide concentrations, including those emitted by human - made sources such as oil - related activities and medium - size power plants.

Not exact matches

Ultimately, he found that, while volcanic eruptions would have spewed huge quantities of both sulfur dioxide and hydrogen sulfide into the atmosphere, it was the former that dissolved more easily in shallow waters, producing large concentrations of sulfidic anions, in the form of sulfites and bisulfites.

The specialized instruments onboard the aircraft sampled the plume for aerosol particle size distribution and composition as well as concentrations of pollutant gases such as sulfur dioxide, nitric oxide, nitrogen dioxide, ozone, and volatile organic compounds (VOCs).

I responded «Chris (# 50), from your reference: «Endangerment Finding: The Administrator finds that the current and projected concentrations of the six key well - mixed greenhouse gases — carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF6)-- in the atmosphere threaten the public health and welfare of current and future generations.

Increasing emissions and concentrations of carbon dioxide receive considerable attention, but our analyses identify an important change in another pathway for anthropogenic climate change — a rapid rise in anthropogenic sulfur emissions driven by large increases in coal consumption in Asia in general, and China in particular.

Concentrations of sulfate aerosols were especially high during these years before regulations like the Clean Air Act limited sulfur dioxide emissions that produce sulfate aerosols.