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Global volcanic sulfur dioxide and ash observations are derived from the Deep Space Climate Observatory (DSCOVR) satellite's Enhanced Polychromatic Imaging Camera. The dataset applies mature retrieval algorithms from heritage instruments like TOMS and OMI to ultraviolet channels, enabling tracking of volcanic plumes. It is produced by the National Aeronautics and Space Administration, with metadata indicating an update in March 2026.
License information is unclear or unspecified; users must verify terms before use. Data files are available in formats including BIN and ISO, which may require specialized software to process.