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Global map of lightning frequency--strikes/km 2 /yr. The high lightning areas are on land located in the tropics. Areas with almost no lightning are the Arctic and Antarctic, closely followed by the oceans which have only 0.1 to 1 strikes/km 2 /yr. The map on the right shows that lightning is not distributed evenly around the planet. [5]
The second most lightning density is near the village of Kifuka in the mountains of the eastern Democratic Republic of the Congo, [84] where the elevation is around 975 m (3,200 ft). On average, this region receives 158 lightning strikes per square kilometre per year (410/sq mi/yr). [85]
Sheet lightning is cloud-to-cloud lightning that exhibits a diffuse brightening of the surface of a cloud, caused by the actual discharge path being hidden or too far away. The lightning itself cannot be seen by the spectator, so it appears as only a flash, or a sheet of light. The lightning may be too far away to discern individual flashes.
Lightning currents have a very fast rise time, on the order of 40 kA per microsecond. Hence, although lightning is a form of direct current, conductors of such currents exhibit marked skin effect as with an alternating current, causing most of the currents to flow through the outer surface of the conductor. [32]
These electrical discharges can be up to a thousand times more powerful than lightning on the Earth. [109] The water clouds can form thunderstorms driven by the heat rising from the interior. [110] The clouds of Venus may also be capable of producing lightning; some observations suggest that the lightning rate is at least half of that on Earth ...
A new study suggests that cloud-to-ground lightning likely provided the necessary material for the first organisms on Earth to form. All Life on Earth Might Have Started From Lightning, Scientists Say
It occurs over and around Lake Maracaibo, typically over a bog area formed where the Catatumbo River flows into the lake. [4] The phenomenon sees the highest density of lightning in the world, at 250 per km 2. [5] In summers, the phenomenon may even occur as dry lightning without rainfall. [6]
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