FengYun-4B/GIIRS FYGeoAIR NH3 retrievals from July 2022 to June 2025
收藏资源简介：
This dataset contains tropospheric ammonia retrieval data observed by the Geostationary Interferometric Infrared Sounder (GIIRS) on board China’s FengYun-4B satellite, which was launched in 2021. The datasets include NH3 column estimates, the uncertainty, and the column averaging kernel (AK) information. The spatial resolution is 2km and temporal resolution 2-hour covering both day and night. The data have been pre-filtered to ensure the high data quality. The nighttime data should be used with caution due to their low thermal contrast, which may lead to high retrieval uncertainty. Prior to using this dataset, please reach out to the project lead Zhao-Cheng Zeng (zczeng@pku.edu.cn) for more detailed information. A Python code for reading and plotting the data is also available. Algorithm reference: Zeng, Z.-C., Lee, L., Qi, C., Clarisse, L., and Van Damme, M.: Optimal estimation retrieval of tropospheric ammonia from the Geostationary Interferometric Infrared Sounder on board FengYun-4B, Atmos. Meas. Tech., 16, 3693–3713, https://doi.org/10.5194/amt-16-3693-2023, 2023. Please visit project website for updates: https://fengyunair.github.io/
