Sentences with phrase «different ozone levels»

They found that elevated CO2 of 800 ppm, increased pollen production per flower by 53 percent while the different ozone levels had no effect on the amount of pollen produced.

Not exact matches

Dr Iarla Kilbane - Dawe from the Department for Transport said: «Ozone was always going to be easy to fix; improving air quality has a whole different level of complexity».

In a forthcoming paper in Physical Review Letters, they report a strong correlation between cosmic ray intensity and ozone depletion across different levels of the atmosphere and different latitudes.

Also, the researchers referred to the US Environmental Protection Agency's Air Quality System which monitors air pollution levels at different sites across the US, and levels of ozone and fine particulate matter on a given day.

Present - day ozone levels (section 5.1) and trends (section 6) in different regions may be associated with very different population densities.

Federoff's team is studying Arabidopsis to find out which genes are turned on or off by different levels of ozone.

(Sec. 340) Requires the EPA Administrator to report to Congress on an analysis of the effects of different carbon dioxide reduction strategies and technologies on the emissions of mercury, sulfur dioxide, and nitrogen oxide, which cause acid rain, particulate matter, ground level ozone, mercury contamination, and other environmental problems.

Not later than 18 months after the date of enactment of this Act, the Administrator shall submit to Congress a report that analyzes the effects of different carbon dioxide reduction strategies and technologies on the emissions of mercury, sulfur dioxide, and nitrogen oxide, which cause acid rain, particulate matter, ground level ozone, mercury contamination, and other environmental problems.

At the higher energy level, different mechanisms kick in, like Sudden Stratospheric Warming (energy relief mainly in the NH) and deep convection driven tropical ozone depletion.