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The Catatumbo Lightning is likely to be caused by ionised gases - specifically the methane created by the decomposition of organic matter in the marshes - rising from a swamp to meet cooler air descending from the Andes Mountains. The meeting of the two currents creates an electrical charge that is discharged as lightening. The lightning is seen most often in the afternoons, when evaporation is greatest.
This phenomenon, also known with the popular name of the Lighthouse of Maracaibo, is easy to be seen from hundreds of miles away. These thunderstorms have a beneficial effect on the earth’s ecosystem too because they produce a high percentage of all the ozone production worldwide. The Catatumbo lightning can be considered a major regenerator of the planet's ozone layer, as it produces approximately 1,176,000 kW of atmospheric electricity.
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