Thunderstorm days over Chilean territory based on WWLLN data

摘要

Based on World Wide Lightning Location Network for 2012-2017 data, we describe the spatial and temporal distribution of lightning activity over Chilean territory. The thunderstorm days per year was computed using a threshold value of the human observation of 17.5 km based on the analysis of meteorological stations in Argentina and Poland. The maximum thunderstorm days were found in northeastern Chile in the Arica region, and specific behavior for Western Patagonia was evidenced. The analysis of lightning activity for every season of the year and the distribution of lightning during the day were computed and presented. The main activity is presented in summer, and the high lighting activity occurs in the afternoon in local time due to the presence of convective activity.