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Subscriber: null; date: 25 February 2017

solar flare

Source:
A Dictionary of Weather
Author(s):

Storm Dunlop

solar flare 

A sudden release of energy in the Sun's corona (3) that emits radiation over the whole electromagnetic spectrum. Flares also eject high-speed charged particles (mainly electrons and protons, but also some atomic nuclei), with velocities that may reach as much as 70 per cent of the speed of light, reaching Earth within 15–20 minutes. The radiation and particles interact in various ways with the Earth's geomagnetic field, giving rise to aurorae, geomagnetic storms, sudden enhancement of atmospherics, and sudden ionospheric disturbances.

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