Summer ozone variation derived from FY3/TOU satellite data and impacts of East Asian summer monsoon

Abstract

The daily dataset of coherent total column ozone were created from FY3/TOU from 2008 to 2017. Using total column ozone from FY3/TOU and tropospheric and stratospheric column ozone from AURA OMI/MLS satellite data, the seasonal variations of the climatological ozone in the region (40°E-160°E, 0-60ºN) are analyzed for the total, tropospheric and stratospheric column, respectively. Differences of ozone and circulation pattern between strong and weak East Asian summer monsoon year are also investigated. Variation of total, tropospheric and stratospheric column ozone is dominated by a low value center over the Tibetan Plateau and abnormal distribution in the monsoon region. There are significant differences of ozone concentration and circulation pattern during strong and weak monsoon in summer. The combination of the monsoon anomaly and the upper westerly jet anomaly affects obviously distribution of the tropospheric and stratospheric ozone during summer in the East Asia and the western Pacific regions.