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Global lightning flash rate climatology is derived from merged satellite sensor data. The dataset combines observations from the Optical Transient Detector (OTD) and Lightning Imaging Sensor (LIS) on a 0.5-degree grid. It is produced by the GHRC DAAC, with the most recent metadata update noted in 2026, though a source also lists a 2014 date.
License is listed as 'other-license-specified'; users must review specific terms. Data formats include HDF and netCDF-4, with ancillary files in PNG, ISO, PDF, HTML, and BIN formats.