Large scale ozone losses

Scientists from the EU SCOUT-O3 Integrated Project, which is co-ordinated by the University of Cambridge's Chemistry Department, have been studying the links between stratospheric ozone and climate change in the Arctic since May 2004. This recent finding was announced during a meeting of the European Geophysical Union in Vienna on Monday, 25 April.
Overall temperatures in the ozone layer were the lowest for 50 years and were consistently low for over three months. From late November to late February, large areas of polar stratospheric clouds (PSCs) - clouds in the ozone layer- were present over the Arctic region at altitudes between 14 and 26 km.