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Looking for an ozone layer in the Arctic.

Looking for an ozone hole in the Arctic

thule, a lonesome outpost above the Arctic Circle on the northwest coast of Greenland, may not seem like an ideal place to visit in the middle of winter. Nonetheless, a team of researchers, having previously studied the loss of ozone over Antarctica, arrived last week in Thule to measure the chemical compounds floating in the stratosphere over the Arctic.

Satellite and balloon measurements over the past several years have suggested that Arctic ozone concentrations drop during the winter months (SN: 10/4/86, p.215), in a pattern reminiscent of but slightly different from the dramatic ozone fluctuations over Antarctica. However, scientists are still debating whether these observations indicate that the ARctic has an ozone "hole" of its own. To help resolve the debate, the team of scientists from the National Atmospheric and Oceanic Administration will be using remote-sensing equipment to make ground-based measurements of ozone levels. In addition, they will measure compounds of reactive nitrogen, chlorine and bromine. In the Antarctic, scientists have demonstrated that human-made chlorine chemicals play a key role in the destruction of ozone (SN: 10/10/87, p.230).
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Publication:Science News
Date:Feb 6, 1988
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