| Popis: |
Long continuing current (LCC) lightning flashes contain a discharge in which a continuing electrical current flows for more than 40 ms. They represent about 10% of the total cloud-to-ground lightning flashes and have been associated with lightning-ignited wildfires. LCC flashes can be detected by different terrestrial- and space-based instruments. However, those instruments simultaneously detect all kinds of lightning across the globe, including those with long continuing current, which hinders the analysis of LCC-only events.We present a method to match every single flash from the Geostationary Lightning Mapper (GLM), the Atmosphere-Space Interactions Monitor (ASIM) and the Earth Networks Total Lightning Network (ENTLN) by using a proximity index. In turn, we analyze the optical signal of LCC flashes simultaneously detected by GLM and ASIM.According to preliminary results, we found an average of 15 LCC events per month in the continental United States simultaneously detected by the three mentioned sensors (GLM, ASIM and ENTLN). Moreover, this method can be used to match other atmospheric electricity phenomena simultaneously detected by different ground and/or space-based instruments. |
