Geneva: World Meteorologiczl Organization. - 75 p. The average temperature over the 60-90°S region was quite close to or below the long-term mean until the middle of August. During the latter half of August a minor warming led to a temperature increase of approx. 5 K. Towards the end of August the temperature decreased again, but during September the polar cap mean temperature...
Geneva: World Meteorologiczl Organization. - 72 p. The area of the ozone hole reached a maximum of 24.0 million km2 on 16 September according to OMI data from NASA. This is more than in 2012 and 2010, but less than in 2011. Data from KNMI, based on GOME-2, show that the ozone hole area averaged over the ten last days of September was 20.9 million km 2. This is more than in 2012...
Geneva: World Meteorologiczl Organization. - 89 p. After being displaced towards the Antarctic Peninsula for a long period, the vortex moved, during the last part of October and first part of November, towards the Indian Ocean and Pacific Ocean sectors. A station as far away from Antarctica as Kerguelen Islands (49°S, 70°E) was under the ozone hole on 1-3 November, and then...
Geneva: World Meteorologiczl Organization. - 40 p. Satellite observations show that the area where total ozone is less than 220 DU (ozone hole area) has been significantly above zero since 6 August. The ozone hole area reached a maximum so far this year on 11 September with 24.1 million square kilometres. A second maximum on 1 October showed an ozone hole area of 23.9 million...
Geneva: World Meteorologiczl Organization. — 33 p. Stratospheric temperatures over Antarctica have been below the PSC type I threshold of 194.6 K since 11 May and below the PSC type II threshold of 187.8 K since 3 June. The daily minimum temperatures at the 50 hPa level have been below the 1979-2014 average since mid April. On several days in April, May, July and August the 50...
Geneva: World Meteorologiczl Organization. — 38 p. Stratospheric temperatures over Antarctica have been below the PSC type I threshold of 194.6 K since 11 May and below the PSC type II threshold of 187.8 K since 3 June. The daily minimum temperatures at the 50 hPa level have been below the 1979-2014 average since mid April. On several days in April, May, July and August the 50...
Geneva: World Meteorologiczl Organization. - 47 p. The area of the region where total ozone is less than 220 DU, the so-called ozone hole area, averaged over the last ten days of September 2015, reached 25.4 million km 2. One has to go back to 2006 to find a larger ozone hole area for this time period. A stable and large vortex, concentric around the south pole and...
Geneva: World Meteorologiczl Organization. — 51 p. The area of the region where total ozone is less than 220 DU, the so-called ozone hole area, averaged over the 30 worst consecutive days has reached 26.9 million square kilometres according to data from NASA. This places 2015 as the third largest ozone hole on record according to this criterion. One has to go back to 2006 and...
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