Surface ozone depletion episodes in the Arctic and Antarctic from historical ozonesonde records

• Published in: Atmospheric Chemistry and Physics
• Main Authors: Tarasick, D. W., Bottenheim, J. W.
• Format: Text
• Language: English
• Published: 2018
• Subjects: Antarctic; Arctic; Canada; Eureka; Antarc*
• Online Access: https://doi.org/10.5194/acp-2-197-2002; https://www.atmos-chem-phys.net/2/197/2002/

Episodes of ozone depletion in the lowermost Arctic atmosphere (0--2 km) at polar sunrise have been intensively studied at Alert, Canada, and are thought to result from catalytic reactions involving bromine. Recent observations of high concentrations of tropospheric BrO over large areas of the Arcti...