Ozone soundings

The ozone vertical distribution at Sodankylä is measured every Wednesday by launching an ozonesonde. During special campaigns there may be additional launches.The black line is the profile from the latest sounding. For comparison, the blue line shows the average of the same month for the years 1989-2001. If the balloon reaches altitude high enough, total column ozone expressed in Dobson Units (DU) can be calculated from the profile.