Ozone in the Arctic lower troposphere during winter and spring 2000 (ALERT2000)

摘要

A summary of the temporal and vertical characteristics of ozone in the Arctic boundary layer as observed during winter and spring 2000 near Alert, Nunavut, Canada (82°N, 62°W) is presented. The measurements were made during the Polar Sunrise Experiments ALERT2000. Particular attention is given to identifying chemical and atmospheric characteristics of short-lived (< 2 days) ozone depletion events that occur during dark and sunlit periods in the Arctic boundary layer. During these events the atmospheric boundary layer becomes turbulent and as a result atmospheric layers aloft, exceeding 100 m in depth, can become fully devoid of ozone.