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Abstract: A Decline in Summertime Lower Tropospheric Ozone across Northern Hemisphere Midlatitudes during the 1980s–1990s: Insights from Trajectory-mapped Ozonesonde dataset for the Stratosphere and Troposphere (TOST) (AGU25)

A Decline in Summertime Lower Tropospheric Ozone across Northern Hemisphere Midlatitudes during the 1980s–1990s: Insights from Trajectory-mapped Ozonesonde dataset for the Stratosphere and Troposphere (TOST)

Zhou Zang1, Jane Liu1, David Walter Tarasick2 and Jingming Chen1, (1)University of Toronto, Department of Geography and Planning, Toronto, ON, Canada, (2)Environment and Climate Change Canada, Air Quality Research Division, Toronto, ON, Canada