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Button that takes you back to the home page. Button that takes you to the teacher pages. Button that takes you to the modules and activities page. Button that takes you to the glossary page. Button that takes you to the related links page. Button that takes you to the references page. Button that takes you to the Problem Based Learning model page. Image map of some Global Climate Change puzzle pieces. Please have someone assist you with this.

Button that takes you to the Overview page.
Button that takes you to the Human Influences page. Button that takes you to The Chemistry page. Button that takes you to the Atmospheric Nitrous Oxide page. Button that takes you to the Atmospheric Methane page. Button that takes you to the Atmospheric CFCs page. Image that says Tropospheric Ozone.
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Go to the "Carbon Dioxide" puzzle piece for more information about Human Influences on this gas.

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Image showing traffic on the Bay Bridge in San Francisco, CA.Global Climate Change: Human Influences-- Tropospheric Ozone
Ozone (O3), in addition to nitrogen oxides (NOx) and hydrocarbons (-CH-), is a by-product of the combustion, or burning, of fossil fuels. Fossil fuels include oil, natural gas, and coal. These fuels are burned in automobile engines, as well as many power plants and industrial factories.

Ozone occurs naturally in the upper layer of the atmosphere called the stratosphere. There, O3 protects the earth from the sun's damaging ultraviolet rays. However, O3 produced by humans in the lower layer of the atmosphere, the troposphere, is harmful. Tropospheric ozone is a major component of smog. Smog is the thick, brown haze that is often seen over cities and industrial regions. Besides being a powerful greenhouse gas, tropospheric ozone irritates the eyes and lungs, may cause lung cancer, and kills plant tissue. Photo: Traffic on the Bay Bridge in San Francisco, CA . Photo courtesy Phil Greenspun.

 

Overview ..|.. Human Influences ..|.. Impacts
Atmospheric CFCs / Atmospheric Methane / Atmospheric Nitrous Oxide / Tropospheric Ozone / The Chemistry
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