Basic information about the 5 most
abundant gases in the atmosphere.
Tropospheric ozone (above) is a
pollutant and the key ingredient in photochemical smog.
Stratospheric ozone is covered below.
Thinning of the ozone layer in the
stratosphere is not the cause of climate change and global
warming. The small additional amount of UV light arriving at the
ground will not cause global warming. That UV light can cause
skin cancer and cataracts, that sort of thing, but not global warming.
Ozone is destroyed naturally when it absorbs UV light. The
chlorine in chlorofluorocarbons (CFCs) is a man-caused process that can
destory ozone. I forgot to mention
this at the review.
The review will start up again at
this point at 2 pm on Thursday afternoon in Anthropology 129.