Since 1992 regular ozone soundings have been performed using ECC 5A/6A sensors mounted on RS80 radiosondes. Ozone profiles up to a height of 35 km were obtained about weekly.

All the measurements contribute to a timeseries that is now more than 20 years long.

Current data from the ozone soundings at Neumayer in diagrams:

• latest vertical profile,
• dobson statistic, 
• ozone section 2009 and
• temperature section 2009 .

The overwintering team at Neumayer updates the diagrams immediately after an ozone sounding has been successfully performed. During the ozone depletion period, they try to increase the sounding rate from 1 sounding per week up to 3 soundings per week.

In the following time-height sections the annual ozone variation over Neumayer is displayed. The ozone depletion - occurring during Antarctic spring - can be recognized clearly.