FengYun-3E/HIRAS-II FYLeoAIR NH3 retrievals from January 2023 to December 2024

This dataset contains tropospheric ammonia retrieval data observed by the Hyperspectral Infrared Atmospheric Sounder-II on board China’s FengYun-3E satellite, which was launched in 2021. The datasets include NH3 column estimates, the uncertainty, and the column averaging kernel (AVK) information. The dataset features a spatial resolution of 14 km and provides two global observations daily, acquired at dawn (~05:30 local solar time) and dusk (~17:30 local solar time), respectively. Pre-filtering has been applied to guarantee high data quality. Prior to using this dataset, please reach out to Zhao-Cheng Zeng ([e-mail]) or Jiancong Hua ([e-mail]) for more detailed information. A Python code for reading and plotting the data is also available. Please visit project website for updates: https://fengyunair.github.io/