BRITISH CROWN COPYRIGHT, THE MET OFFICE / SCIENCE PHOTO LIBRARY BRITISH CROWN COPYRIGHT, THE MET OFFICE / SCIENCE PHOTO LIBRARY
Thunderstorm detection. Met Office employee plotting a map used to detect thunderstorms. These are detected by the radio noise (sferics) produced by lightning in the atmosphere. The radio noise and direction is obtained using cathode ray direction-finding systems. The map shows how the intersection of bearings from four of these stations are used to indicate the location of the lightning discharge. Here, the detector stations are located in the UK, and the lightning is off France's Mediterranean coast. Photographed in 1962, at the Met Office's headquarters in Bracknell.
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