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Chlorofluorocarbons are emitted by us just like greenhouse gases, this gas is also affecting the arctic and the Antarctic because they act as a "vortex" in the sense that they suck up chlorofluorocarbons and that is forming the ozone layer on the top of Antarctica.
Hope my answer helps someone one day cheers =)
What else can I help you with?
Is Tetrafluoroethane is NON-CFC gas?
Yes. Tetrafluoroethane is a non-CFC gas. CFCs are chlorfluorocarbons which contain both chlorine and fluorine. Tetrafluoroethane does not contain chlorine.
What is the destruction in the ozone caused by chlorfluorocarbons?
Ozone depletion is the process where ozone holes are created in the ozone layer. It is caused due to the action of chloro-floro-carbons on the ozone molecule to break it down to oxygen.
Why are most countries moving towards lowering the use of chlorofluorocarbons?
Most countries are moving toward lowering the use of chlorfluorocarbons because they are working toward averting global warming. They are also working on lessening the carbon footprint they leave .
Why does pollution causes tornadoes and global warming?
Pollution does not cause tornadoes, but some forms of pollution contribute to global warming. Certain gasses, called greenhouse gasses, including carbon dioxide, methane, nitrogen oxides, and chlorfluorocarbons are released by various natural and human processes. Earth is warmed by electromagnetic radiation (light, ultraviolet, infrared etc.) from the sun. The warmed Earth then radiates some of this energy back as infrared radiation. Greenhouse gasses absorb some of this infrared radiation, preventing it from escaping back into space. A certain level of greenhouse gasses is essential; without them Earth would freeze. However, burning fossil fuels and various industrial and agricultural processes release additional greenhouse gasses. The higher concentration increases the amound of infrared absrobed, thus increasing overall temperatures. Some have proposed that global warming is causing tornadoes to become more frequent or more violent, but there is no real evidence behind this claim.
What are atmospheric contaminants and effect on atmosphere?
A contaminant would be a foreign substance that does not naturally occur without human intervention. So, for example, in the Amazon rain forest, automobile antifreeze would be a contaminant because antifreeze doesn't occur in the Amazon basin naturally. People have to bring it in and dump it there. In the atmosphere, carbon dioxide is NOT a contaminant. Carbon dioxide occurs naturally in Earth's atmosphere, as does methane. However, chlorfluorocarbons such as Freon do NOT naturally occur in the atmosphere. Many other gases are made by humans and do not occur in nature. CFC's are the most well-known example because in 1974 two atmospheric chemists, Rowland and Melina, researched where CFC's would go once they were released into the atmosphere. They concluded that CFC's will break down, but that their separate atoms would then start eating a hole in the Earth's ozone layer, and published a paper issuing a warning. The scientific community found the research solid and persuasive, but a number of chemical industry companies banded together to attack this research and its call for a ban on CFC's, which were very profitable. Despite the massive public relations campaign and many public statements that a ban on CFC's would hurt industry and the economy, President Carter banned CFC manufacture and use in the USA past a certain date. In 1985 NASA was finally able to put up satellites that could track the ozone level at the Earth's poles, and found that there was indeed a growing ozone hole that was even worse that Rowland and Molina predicted. In 1987 the Montreal protocol banned CFC use worldwide. Perhaps the nations acted quickly on ozone because there was no argument that the world without an ozone layer would quickly become hostile to human existence, with a massive drop in agricultural productivity and an equally massive rise in deaths by cancer. Some evidence says the ozone hole is now stable and even slowly closing. So humanity really dodged a bullet at the very last moment there. The effect of any contaminant on the atmosphere depends on its chemical makeup. There is no general answer, only specific answers, as given here.
