2008 ozone hole larger than last year   Ozone hole during 7 October 2008 as measured by the Scanning Imaging Absorption Spectrometer for Atmospheric Cartography (SCIAMACHY) atmospheric sensor onboard ESA’s Envisat.   Ozone hole extension during the last 10 years.   Chlorine activation and ozone hole extension early September 2007 and 2008.   Monthly averages of total ozone values for September over the South Pole for the last 10 years using measurements from the Scanning Imaging Absorption Spectrometer for Atmospheric Cartography (SCIAMACHY) sensor aboard ESA's Envisat, the Global Ozone Monitoring Experiment (GOME) aboard ESA’s ERS-2 and its follow-on instrument GOME-2 aboard EUMETSAT’s MetOp. Release date: 3 December 2009