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ozone is an invisible upper atmospheric

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gas that protects all forms of life on

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earth for most of the sun's damaging

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radiation radiation that can cause skin

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cancer I damage and suppression of the

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immune system the harvesting of fish and

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plant life are also affected a vast

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amount of aquatic life has its

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beginnings in the oceans near Antarctica

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false-color imagery of the South Pole

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from NASA's Nimbus seven satellite

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provides scientists with a roadmap of

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daily changes in the ozone by tracking

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this imagery for the past nine years

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they have discovered a trend normal day

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each spring over Antarctica a hole in

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the ozone develops and it has been

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getting larger year by year to date as

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much as fifty to sixty percent of the

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ozone in this area has been lost these

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discoveries prompted a coordinated

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series of you a dark pink ozone

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experiments west VA an international

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effort including some 150 scientists and

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engineers of NASA National Oceanic and

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Atmospheric Administration National

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Science Foundation and Industry work

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for months to study this alarming

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environmental issue scientists used

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ground-based instruments and launched

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balloon born payloads to sample air

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chemistry at mcmurdo station in

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Antarctica at the same time NASA's dc-8

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flying laboratory study the lower

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atmosphere making long missions from

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Punta Arenas Chile into the area of

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ozone depletion NASA's high-flying er-2

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plane carrying a single pilot and a

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handful of sampling instruments feed

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directly into a layer of atmosphere

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where the ozone was depleted a number of

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activities contributing to ozone loss

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have been pinpointed by the scientific

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and policy community no longer Duke and

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aerosol products contain

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chlorofluorocarbons or CFCs but these

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harmful gases still get into the

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atmosphere because they are used as

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refrigerants fire retardants phone

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blowing agents and solvents as long as

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this persists ozone will continue to be

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lost initial findings from the summers

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ozone expedition verify that there is a

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complex interplay between CFCs

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chlorine-containing gases and the

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meteorology in certain parts of the

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world ice crystals in the upper

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atmosphere convert the gases into a

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byproduct that destroys ozone these ice

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crystals usually early form in the

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atmosphere the South Pole because it

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gets so cold this may explain why other

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parts of the world aren't dramatically

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affected by the depletion of science I

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still do not understand all the

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mechanisms of change but thanks to the

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work of so many we will soon have a more

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complete understanding of ozone loss and

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its threat to the world environment in

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the early 1990s a new generation of