Replication Data for: Airborne Observation of CO2 and CH4 in the Urban Atmospheric Boundary Layer in Eastern China

This 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.

本数据集包含中国东部四座城市（北京、南京、衡水、商丘）的大气二氧化碳（CO₂）与甲烷（CH₄）浓度机载垂直廓线观测数据。其中北京、南京两地的观测覆盖从地面至2千米的完整垂直廓线，衡水与商丘则仅获取部分垂直廓线数据。本次观测数据采集于2023年5月14日，核心研究目标为表征城市大气边界层内二氧化碳与甲烷的垂直分布特征。