Record low temperatures in Arctic ozone layer - first signs of ozone loss

The first signs of ozone loss have now been observed in the Arctic this winter, and large scale losses are expected to occur if the cold conditions persist. Overall temperatures in the ozone layer are the lowest for 50 years having been consistently low for the past two months.
Since late November large areas of polar stratospheric clouds (PSCs) - clouds in the ozone layer - have been present over the Arctic region at altitudes around 20 kilometres. They are now the largest in the last 20 years, the period when the ozone-depleting compounds have been high. These conditions could make ozone depletion very likely.

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<p><a href="http://www.physorg.com/news2860.html">Record low temperatures in Arctic ozone layer - first signs of ozone loss</a></p> <p>The first signs of ozone loss have now been observed in the Arctic this winter, and large scale losses are expected to occur if the cold conditions persist. Overall temperatures in the ozone layer are the lowest for 50 years having been consistently low for the past two months. <br>Since late November large areas of polar stratospheric clouds (PSCs) - clouds in the <a class="directory" href="http://www.physorg.com/search/ozone layer">ozone layer</a> - have been present over the Arctic region at altitudes around 20 kilometres. They are now the largest in the last 20 years, the period when the ozone-depleting compounds have been high. These conditions could make ozone depletion very likely.</p>