The Global Flash Rate Observed from Space

概要

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In this study, we developed an algorithm to produce global flash distribution by using the data from the LIS (Lightning Imaging Sensor) aboard the TRMM satellite and OTD (Optical Transient Detector). A cross-sensor comparison between LIS and OTD reveals that the relative DE (Detection Efficiency) of the OTD to the LIS is estimated at 66% on average, which is consistent with the sensitivity of the both instruments. A statistical examination of LIS/OTD lightning data reveals that an average of 47.9 flashes ±7.7 occurs around the globe per second, which is well below the traditional estimate of 100 flashes/second.
社団法人日本リモートセンシング学会の論文