Influence of Large-scale Land-sea Atmosphere Interaction on Ozone Pollution in Coastal Cities in the Northern Bohai Sea

O3_obs includes ozone observations for Qinhuangdao (QHD), Jinzhou (JZ), Yingkou (YK), Dalian (DL) from 29 August to 5 September 2017, and the information of four sites including station code, longitude and latitude. O3_sim includes ozone simulation in the four sites extracted according to location of them. Met_obs and Met_sim include the observations of 2 m temperature (℃), 2 m relative humidity (RH2) and 10 m wind speed for the 4 stations from 29 August to 5 September 2017, and the information of four stations including station code and their location. Slp_wind_9km.nc is mean sea-level pressure and wind in Phase Ⅰ and Phase Ⅱ. O3_wind_9km.nc is mean simulated surface ozone mixing ratios and wind at 10 m in 19:00-09:00 LT and 10:00-18:00 LT during Phase Ⅰ and Phase Ⅱ. Process_contribution includes mean surface O₃ mixing ratios and O₃ contribution at the bottom level in Phase Ⅰ, Phase Ⅱ, and at different heights (AGL) in Phase Ⅱ in four sites, respectively. O3_source_site includes time series of O₃ source in QHD, JZ, YK, and DL. Mean_source_base_27km.nc is the mean O­₃ contribution in Phase Ⅰ and Phase Ⅱ from five primary exogenous source regions. Mean_source_control_27km.nc is the O₃ contribution in Phase Ⅱ from the BTH and NEC emissions in Phase I, in which BTH and NEC’s emissions in Phase Ⅱ are set zero. Trjectory_conc_pa includes three trajectories analyzed in this work and vertical O₃ and NO_X mixing ratios, and the chemical generations and consumptions of O₃ within the air masses along the trajectories.