DATABASE: A Whole Lot About Ozone

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Science  16 Jul 2004:
Vol. 305, Issue 5682, pp. 317
DOI: 10.1126/science.305.5682.317b

Nearly 20 years ago, British researchers discovered a gaping ozone hole over Antarctica, which fueled concerns that humanmade chemicals were gnawing away at Earth's shield against harmful UV radiation. You can gather information on the continuing problem of dwindling stratospheric ozone at this pair of sites. The Ozone Depletion page from the U.S. Environmental Protection Agency offers everything from animations of the ozone hole to measurements of UV radiation reaching the ground in different parts of the United States. Teachers will find backgrounders on the causes and possible consequences of ozone depletion. Visitors can also read up on chlorofluorocarbons and other ozone-destroying chemicals and peruse schedules to phase them out.

Aimed at researchers, this growing portal from NASA's Goddard Space Flight Center links to projects around the globe that are gauging ozone depletion. You can download data gathered by satellite, balloons, aircraft, and other means. One day last year, the hole was the second largest on record.

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