The 3rd PEEX Science Conference & 7th Meeting was held in Moscow on 19-22.Sep.2017 at MSU. Best Poster Award was given to Yuro Shtabkin on Regional sources of near-surface ozone in the Northern Eurasia. Conference Proceeding 2017. Conference Program, Participants and memo. The 8th PEEX meeting including working groups will take place on October 2018 and the 4th Science Conference in spring 2019 in Helsinki.