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In June to August, photochemical ozone production causes very high concentrations over the East Coast of the US and China. Ground-level ozone (O 3), also known as surface-level ozone and tropospheric ozone, is a trace gas in the troposphere (the lowest level of the Earth's atmosphere), with an average concentration of 20–30 parts per billion ...
Ozone-oxygen cycle in the ozone layer. The photochemical mechanisms that give rise to the ozone layer were discovered by the British physicist Sydney Chapman in 1930. Ozone in the Earth's stratosphere is created by ultraviolet light striking ordinary oxygen molecules containing two oxygen atoms (O 2), splitting them into individual oxygen atoms (atomic oxygen); the atomic oxygen then combines ...
The Ozone Transport Commission (OTC) is a multi-state organization founded in 1991 and created under the Clean Air Act. [1] It is responsible for advising EPA on air pollution transport issues and for developing and implementing regional solutions to the ground-level ozone problem in the Northeast and Mid-Atlantic regions, collectively called the Ozone Transport Region (OTR).
More than four in 10 people that live in the United States live in counties that have unhealthful levels of either ozone or particle pollution.
U.S. Non-Attainment Areas for ozone pollution in June 2007. In United States environmental law, a non-attainment area is an area that exceeds pollution limits for one or more criteria pollutants: ozone (O 3), atmospheric particulate matter (PM 2.5 /PM 10), lead (Pb), carbon monoxide (CO), sulfur oxides (SO x), and nitrogen oxides (NO x). [1]
Ozone Mapping and Profiler Suite (OMPS), is a suite of instruments built by Ball Aerospace that measure the global distribution of ozone and, less frequently, how it is distributed vertically within the stratosphere. [1] The suite flies on the Suomi NPP and NOAA-20 (formerly JPSS-1) satellites along with several other instruments.
In the United States, cardiovascular disease kills a person every 40 seconds. [33] While the effects of air pollution on the respiratory diseases are well understood, air pollution also affects the cardiovascular system at the same level as or higher level than the respiratory system, [ 34 ] and the adverse cardiovascular health outcomes in ...
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