CFC - see chlorofluorocarbons.
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chamber - as regards the U.S. government, either the House of Representatives or the Senate.
CFC - see chlorofluorocarbons.
Chlorination byproducts - cancer-causing chemicals created when chlorine used for water disinfection combines with dirt and organic matter in water.
Central Group 11 (negotiating coalition of Central European Annex I parties).
The compounds CFC-11 and CFC-12 were first measured in the oceans in the late 1970s. Concentrations generally decrease as the ocean depth increases.
CFC See Chlorofluorocarbons. CFL See Crown Forest Licence. CG-11 Central Group 11 (negotiating coalition of Central European Annex I parties). CGE Consultative Group of Experts on National Communications from Parties not included in Annex I to the Convention. CH4 See Methane.
A family of compounds of chlorine, fluorine, and carbon, entirely of industrial origin.
That is why the planet was able to get together back in 1987 and sign he Montréal Protocol to agree to cut ~ production in half. ~s are chemicals that destroy the ozone layer. In 1996 the Copenhagen agreement instituted a complete ban.
N2O concentrations continue to rise while those of ~-12, the third largest WMGHG contributor to RF for several decades, are decreasing due to phase-out of emissions of this chemical under the Montreal Protocol. N2O is now likely the third largest WMGHG contributor to RF.
ChloroFluroCarbons (~'s) A common industrial product, used in refrigeration systems, air conditioners, aerosols, solvents and in the production of some types of packaging.
They are often known as ~, Du Pont's trading name. Among other things, ~ is used to transfer heat or cold in freezers, refrigerators, air-conditioning systems and so on, in the production of foam plastic and to clean electronic equipment.
A chemical compound made up of carbon, fluorine, and chlorine. ~s have been used as propellants in spray cans, coolants in refrigerators and air conditioners, and in foam, plastics, and cleaning solvents.
Greenhouse gases include carbon dioxide, methane, nitrous oxide, chlorofluorocarbons (~'s) and water vapour. Carbon dioxide, methane and nitrous oxide have significant natural and human sources while only industries produce ~'s.
An example is ~-12 (CCl2F2, used as a refrigerant in refrigerators and air conditioners and as a foam blowing agent.
The reference level of 1 is the potential of ~-11 and ~-12 to cause ozone depletion. If a product has an ozone depletion potential of 0.5, a given weight of the product in the atmosphere would, in time, deplete half the ozone that the same weight of ~-11 would deplete.
"Of the four species identified, ~-113a seems the most worrying as there is a very small but growing emission source somewhere", the University of Leeds' Professor Piers Forster told The BBC. "We should find it and take it out of production." ...
The ratio of the warming caused by a substance to the warming caused by a similar mass of carbon dioxide. ~-12, for example, has a GWP of 8,500, while water has a GWP of zero. (See Class I Substance and Class II Substance.)
Source: Terms of the Environment
The integrated change in total ozone per unit mass emission of a specific compound, relative to the integrated change in the total ozone per unit mass of ~-11.
EEA. 1999. Environment in the European Union at the turn of the century. Page 101. Environmental assessment report No 2 ...
Global Warming Potential: The ratio of the warming caused by a substance to the warming caused by a similar mass of carbon dioxide. ~-12, for example, has a GWP of 8,500, while water has a GWP of zero. (see Class I Substance and Class II Substance) ...
Ozone Depletion Potential is a measure of the relative potency of different chemicals in terms of ozone destruction. ODPs are generally measured relative to the refrigerant gas, ~-11, which is defined to have an ODP of 1.0. Use of high-ODP gasses has been largely phased out.
CFR- Code of Federal Regulations
CHABA- Committee on Hearing and Bio-Acoustics
CHAMP- Community Health Air Monitoring Program
CHEMNET- Chemical Industry Emergency Mutual Aid Network ...
See also: What is the meaning of Water, Environmental, Gas, Air, Environment?