Data files for: The Urban Lightning Effect Revealed with Geostationary Lightning Mapper Observations

Warm season (June, July, August; JJA) Geostationary Lightning Mapper (GLM) observations from 2018-2021. Original processing of 20-second Level 2 GLM packets into 5-min files and quality control performed by CPTEC/INPE. Complete description provided by Oda et al. (2022). Further processing conducted locally to isolate GLM flash data for the Southeast U.S., accumulate the 5-minute files into yearly and 4-year bins, and to derive total flash count ("flash"), flash days ("fday"), and average flashes per flash day ("fpfd"). Included files: GOES-16 Full Disk Yearly files containing all GLM data classes (flash, group, and event) with 5-minute timesteps Yearly files containing only GLM flash data with 5-minute timesteps Southeast (lat-lon bounds: -96.00, -74.00, 41.00, 24.00) Final 4-year aggregate file containing derived total lightning metrics ready for analysis in GIS