Ground-based and airborne measurements of the Arctic ozone hole

The Arctic winter ozone layer is studied using ozone profile data obtained in April 1986 and March 1987. Ozonesondes, ground based measurements, and balloon flights were utilized to collect the data. The 1986 ozonesonde measurements reveal depleted ozones at 100 mb and 160 mb in the profiles, and based on the 1986 TOMS data, it is noted that a large crater existed in the ozone field from mid-January to April. The 1987 TOMS imagery displayed no ozone hole or crater in the spring, but depleted layers were detected in the ozone profiles. Based on the observations, it is concluded that the Arctic spring layer has many of the same characteristics as the Antarctic ozone phenomenon, though the hole may not be present every year.