ESA Precursors for Aerosols and Ozone Climate Change Initiative (Precursors_cci): IASI NH3 L3 merged product, version 4R EARTH SCIENCE>OCEANS>OCEAN CHEMISTRY>AMMONIA EARTH SCIENCE>ATMOSPHERE EARTH SCIENCE>AGRICULTURE EARTH SCIENCE>AGRICULTURE>AGRICULTURAL CHEMICALS>FERTILIZERS EARTH SCIENCE>HUMAN DIMENSIONS>ENVIRONMENTAL IMPACTS>BIOMASS BURNING EARTH SCIENCE>HUMAN DIMENSIONS>ENVIRONMENTAL IMPACTS>INDUSTRIAL EMISSIONS EARTH SCIENCE>ATMOSPHERE>AIR QUALITY ESA CCI Precursors Ammonia aerosol precursors satellite observation atmosphere ammonia NH3 level 3 total column agriculture fertilizers livestock biomass burning industrial emissions air quality IASI orthoimagery This long-term dataset contains monthly Level 3 (L3) gridded ammonia (NH3) total column data derived from IASI (Infrared Atmospheric Sounding Interferometer) measurements onboard Metop-A/B/C (Meteorological operational satellite-A/B/C) data produced as part of the European Space Agency's (ESA) Climate Change Initiative (CCI) Precursors for aerosols and ozone project. The temporal range of the dataset is October 2007 to June 2025. Full documentation can be found on the project website at https://climate.esa.int/en/projects/precursors-for-aerosols-and-ozone/.The version number is 4.0.1R. Data are available in NetCDF format.This dataset forms part of the ESA Precursors Climate Change Initiative (Precursors_cci): Precursors IASI NH3 L3 data products v4R. doi:10.5285/463862326d574951bea52527f9df397d. https://dx.doi.org/10.5285/463862326d574951bea52527f9df397d series 2ec5b1fb653445bdbbd0dcd69dd223da eng -90.0 -180.0 90.0 -180.0 90.0 180.0 -90.0 180.0 -90.0 -180.0 Public data: access to these data is available to both registered and non-registered users. http://inspire.ec.europa.eu/metadata-codelist/LimitationsOnPublicAccess/noLimitations