The present article describes a new concept of lightning-caused forest fire danger using a probabilistic criterion. The assessment of forest fire danger is made on the basis of the algorithm that classifies the forest territory by vegetation conditions. Lightning activity is processed by the MODIS spectroradiometer according to the World Wide Lightning Location Network data and remote sensing data for the Timiryazevskiy forestry in the Tomsk Region. The cluster analysis of the WWLLN and MOD06_L2 product data are used in the present paper.
The work presents the data analysis of the energy of lightning discharges recorded by WWLLN on the territory of Western Siberia. A comparison of the discharge energy distributions in four altitude zones has been performed. Altitude zones are divided into the following conditional categories: lowlands (up to 300 m above sea level), low mountains (from 300 to 1000 m above sea level), middle mountains (from 1000 to 2000 m above sea level) and high mountains (more than 2000 m above sea level). Territories with an altitude of less than 2000m above sea level are characterized by the presence of thunderstorm foci with an increased density of discharges. At altitudes over 2000m above sea level, the discharge density is minimal. The energy of 90% of the discharges for lowlands and low mountains does not exceed 10 kJ. A greater number of discharges with energies above 10 kJ are noted in the middle and high mountains. The greatest increase in the energy of lightning discharges is observed for heights over 2000 m above sea level.
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