ch 13 vocab

ch13 vocabulary mrs porch
the long-term prevailing weather conditions at a paritcular place based pon records taken
the distance from the equator measured in degrees north or south of the equator
El Nino
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 water in the eastern Pacific Ocean is cooler than usual
ozone layer
an area in the stratosphere where ozone is highly concentrated
human-made chemicals
ozone hole
a thinning of stratospheric ozone that occurs over the poles during the spring
polar statospheric clouds
high-altitude clouds made of water and nitric acid
greenhouse gases
the gases that do absorb and radiate heat
global warming
increase in global temperature
Kyoto Protocol
requires developed countries to decrease emissions of carbon dioxide and other greenhouse gases by an average of 5% below their 1990 levels by 2012