| Section L | L index | 191-199 of 372 terms |
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lightning damage Direct damage to property and any indirect damage (due to fire or accidents) caused by lightning.
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lightning detection networkAn integrated array of lightning direction finders that provide information for trigonometric location of cloud-to-ground lightning discharges. Timing and direction information from individual receivers are combined to provide evolving maps of lightning occurrences across vast regions that sometimes reach beyond the range of storm surveillance radars. See sferics receiver.
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lightning echoA radar echo from lightning. Lightning echoes are explained by the scattering of radar waves by the high concentration of free electrons created in the narrow channel of a lightning discharge. Because the electrons recombine quickly, lightning echoes have short durations, typically 1 s or less.
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lightning flashThe total observed lightning discharge, generally having a duration of less than 1 s. A single flash is usually composed of many distinct luminous events that often occur in such rapid succession that the human eye cannot resolve them.
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Lightning Imaging Sensor(Abbreviated LIS.) An instrument designed to detect lightning from space as part of TRMM.
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lightning mapping systemA network of lightning detection equipment for locating the electromagnetic sources of a lightning flash. The flash, both intracloud and cloud-to-ground, is mapped in three-dimensional space using equipment with a time resolution of less than 1 μs. Since cloud-to-cloud and cloud-to-air are rare lightning phenomena, mapping them has little or no importance.
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