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Last Updated: Friday, 5 October 2007, 10:14 GMT 11:14 UK
Metop sees Antarctic ozone 'hole'
On 3 October: Cool colours trace the thinning

Europe's new Metop satellite has revealed the extent of ozone thinning over Antarctica this year.

At its worst in late September, the hole was twice as big as Europe.

Nearly 200 governments recently agreed a faster timetable for phasing out the chemicals thought to be depleting the protective layer in the stratosphere.

This has been the first opportunity for Metop, Europe's most sophisticated weather and climate observer, to study the hole since its launch last year.

Scientists at the German Aerospace Center (DLR) analysed data from the Global Ozone Monitoring Experiment 2 (GOME-2) instrument on the satellite.

They say some unusual meteorological conditions this year drove extensive thinning over the South Atlantic and South America and a build-up of ozone over Australia.

However, the thinning this year has been well short of last year's record hole, which at times was bigger than North America.

Metop is one of three identical spacecraft that will be flown by Europe in a polar orbit over the coming decades to gather continuous data.

It is a joint project between the European Space Agency (Esa) and Eumetsat, the intergovernmental organisation charged by European member states with operating a series of orbiting weather observatories.

Other satellites also monitor ozone, including Europe's main Earth-observation platform, Envisat.

SEE ALSO
Deal on ozone and climate relief
24 Sep 07 |  Science/Nature
Unfinished business of ozone protection
17 Sep 07 |  Science/Nature
More progress urged on ozone hole
17 Sep 07 |  Science/Nature
'Green eye' tech centre launched
02 May 07 |  Science/Nature
Metop weather satellite lifts off
19 Oct 06 |  Science/Nature
Weather observer ready for flight
16 Oct 06 |  Science/Nature



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