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chapter 13 ELS

atmosphere and climate change vocab

climate the long-term prevailing weather conditions at a particular place based upon records taken
latitude the distance form the equator measured in degrees north or south of the equator
el nino the name given to the short-term (generally 6 to 18 month period), periodic change in the location of warm and cold water masses in the pacific ocean
la Nina the cool phase of the el nino- southern oscillation: a periodic occurrence in the eastern pacific ocean in which the surface-water temperature becomes usually cool
ozone layer area in the stratosphere where the ozone is highly concentrated
chlorofluorocarbons (CFC) hydrocarbons in which some or all of the hydrogen atoms are replaced by chlorine and fluorine: used in coolants for refridgerators and air conditioners and in cleaning solvents; their use is restricted because they destroy ozone molecules in the stratosph
ozone hole a thinning of the stratospheric ozone that occurs over the poles during the spring
polar stratospheric clouds a cloud that forms at altitudes of about 21,000 m during the Antarctic and antarctic winter or early spring, when air temperatures drop below -80 degrees Celsius
greenhouse gases gases that absorb and radiate heat
global warming a gradual increase in the average global temperature that is due to a higher concentration of gases such as carbon dioxide in the atmosphere
Kyoto protocol an international treat according to which developed countries that signed the treaty agree to reduce their emissions of carbon dioxide and other gases that may contribute to global warming by 2012
Created by: monyaem0106
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