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California portal; This article is within the scope of WikiProject California, a collaborative effort to improve the coverage of the U.S. state of California on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
The website displays ozone levels via a map of Europe. Background information on ozone and its health impacts are also provided. Users can monitor ozone levels in a neighbouring country or a holiday destination, check recent trends and track the spread of ozone across Europe. The website now includes a module to display exceedances in countries.
In air at sea level pressure of 101 kPa, the critical value is roughly 30 kV/cm, [1] but this decreases with pressure, therefore, corona discharge is more of a problem at high altitudes. [4] Corona discharge usually forms at highly curved regions on electrodes, such as sharp corners, projecting points, edges of metal surfaces, or small diameter ...
The HFC-227ea fire suppression agent was the first non-ozone-depleting replacement for Halon 1301. [citation needed] In addition, HFC-227ea leaves no residue on valuable equipment after discharge. [2] HFC-227ea contains no chlorine or bromine atoms, presenting no ozone depletion effect. Its atmospheric lifetime is approximated between 31 and 42 ...
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).
Cracks can be formed in many different elastomers by ozone attack, and the characteristic form of attack of vulnerable rubbers is known as ozone cracking. The problem was formerly very common, especially in tires , but is now rarely seen in those products owing to preventive measures.
Dobson spectrophotometers can be used to measure both total column ozone and profiles of ozone in the atmosphere. [5] [6] Ozone is tri-atomic oxygen, O 3; ozone molecules absorb harmful UV light in the atmosphere before it reaches the surface of the earth. No UVC radiation penetrates to the ground as it is absorbed in the ozone-oxygen cycle.
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 by volume (ppbv), with close to 100 ppbv in polluted areas.