Replication Data for: Airborne Observation of CO2 and CH4 in the Urban Atmospheric Boundary Layer in Eastern Chinahttps://doi.org/10.7910/DVN/ZPVSVUJun, WangHonghui, XuWei, XiaoYuting, PangNing, HuJiaping, XuYibo, LiuLingbing, BuChang, CaoZhonghao, YangTianhao, WangLei, JiaJinhui, WuMi, ZhangXuhui, LeeHarvard Dataverse2026-02-122026-02-12T21:08:52ZThis dataset contains airborne vertical profile measurements of atmospheric CO₂ and CH₄ concentrations over four cities in Eastern China: Beijing, Nanjing, Hengshui, and Shangqiu. The dataset includes full vertical profiles (from ground level to 2 km) over Beijing and Nanjing, as well as partial profiles over Hengshiu and Shangqiu. Data were collected on 14 May, 2023, with the primary objective of characterizing the vertical distribution of CO₂ and CH₄ within the urban atmospheric boundary layer.Earth and Environmental Sciences2026-02-12Jun, Wang2026-02-10CC0 1.0