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Instrument

ALDF
Advanced Lightning Direction Finder

The Advanced Lightning Direction Finder (ALDF) is a ground-based lightning detection sensor. It measures the magnetic field strength and arrival time of lightning radio emissions. These measurements are used to determine the location and time of occurrence of lightning ground strikes. ALDF has a typical maximum range of 600 km. ALDFs are used in different lightning detection networks such as the United States National Lightning Detection Network (NLDN).

NASA's DC-8 flying laboratory passes Antarctica's tallest peak, Mount Vinson, on Oct. 22, 2012, during a flight over the continent to measure changes in the massive ice sheet and sea ice. Credit: NASA/Michael Studinger (Photography courtesy NASA Images)

Instrument Details

Magnetic/Electric
Earth Science > Atmosphere > Atmospheric Electricity
Earth Science > Atmosphere > Atmospheric Electricity > Lightning
Earth Science > Atmosphere > Weather Events > Lightning
Land Surface, Troposphere
N/A
600 km
N/A
Currently unavailble
  • Currently unavailable

  • Currently unavailable

  • Global Atmospherics, Lightning Location and Protection

  • Currently unavailable

  • Currently unavailable