edu.ucar.opensky::articles:43526 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T17:50:26.908233 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.net/ark:/85065/d7r215sd Challenges and opportunities offered by geostationary space observations for air quality research and emission monitoring 2025-05-01T00:00:00Z publication https://n2t.net/ark:/85065/d7r215sd https://doi.org/10.1175/BAMS-D-23-0145.1 He, T. author Oomen, G. author Tang, Wenfu author Bouarar, I. author Chance, K. author Clerbaux, C. author Edwards, David P. author Eskes, H. author Gaubert, Benjamin author Granier, C. author Guevara, M. author Jacob, D. J. author Kaiser, J. author Kim, J. author Kondragunta, S. author Liu, X. author Marais, E. A. author Miyazaki, K. author Park, R. author Peuch, V. author Pfister, Gabriele author Richter, A. author Stavrakou, T. author Suleiman, R. author Turner, A. J. author Veihelmann, B. author Zeng, Z. author Brasseur, Guy author UCAR/NCAR - Library publisher Space-borne remote sensing of atmospheric chemical constituents is crucial for monitoring and better understanding global and regional air quality. Since the 1990s, the continuous development of instruments onboard low-Earth orbiting (LEO) satellites has led to major advances in air quality research by providing daily global measurements of atmospheric chemical species. The next generation of atmospheric composition satellites measures from the geostationary Earth orbit (GEO) with hourly temporal resolution, allowing the observation of diurnal variations of air pollutants. The first two instruments of the GEO constellation coordinated by the Committee on Earth Observation Satellites (CEOS), the Geostationary Environment Monitoring Spectrometer (GEMS) for Asia and the Tropospheric Emissions: Monitoring of Pollution (TEMPO) for North America, were successfully launched in 2020 and 2023, respectively. The European component, Sentinel-4, is planned for launch in 2025. This work provides an overview of satellite missions for atmospheric composition monitoring and the state of the science in air quality research. We cover recent advances in retrieval algorithms, the modeling of emissions and atmospheric chemistry, data assimilation, and the application of machine learning based on satellite data. We discuss the challenges and opportunities in air quality research in the era of GEO satellites and provide recommendations on research priorities for the near future. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication <style type="text/css"></style><span style="font-family:Arial;font-size:10pt;font-style:normal;" data-sheets-root="1">Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.</span> None eng geoscientificInformation