The Tropospheric Ozone Assessment Report (TOAR) is an initiative of the International Global Atmospheric Chemistry (IGAC) project. TOAR-II is the second phase of TOAR. It builds on the successful completion of the first comprehensive assessment on tropospheric ozone and will last from 2020 to 2024. This data publication contains a summary report and slides from the TOAR-II kickoff workshop from Jan, 25th, 2021 to February, 3rd, 2021. This workshop was held globally in virtual format and attracted up to 177 participants from ?? countries. More information about TOAR-II can be found at https://igacproject.org/activities/TOAR/TOAR-II .