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LOFAR Lightning Imaging: Mapping Lightning With Nanosecond Precision.

B M Hare1, O Scholten1,2, A Bonardi3

  • 1KVI-Center for Advanced Radiation Technology University of Groningen Groningen Netherlands.

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|June 26, 2018
PubMed
Summary
This summary is machine-generated.

The LOw-Frequency ARray (LOFAR) radio telescope precisely maps lightning in 3-D, revealing intricate electrical current structures. This advancement offers meter-level accuracy for distant lightning events, enhancing our understanding of thunderstorms.

Keywords:
LOFARleader propagationlightninglightning mappingtime of arrival

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Area of Science:

  • Atmospheric physics
  • Radio astronomy
  • Electromagnetism

Background:

  • Understanding lightning phenomena is crucial for atmospheric science.
  • Existing lightning mapping technologies have limitations in precision and scope.
  • The LOw-Frequency ARray (LOFAR) offers a unique capability for radio astronomical observations.

Purpose of the Study:

  • To develop and present a pipeline for 3-D lightning mapping using LOFAR data.
  • To demonstrate LOFAR's precision and capabilities in lightning detection and localization.
  • To investigate the spatial structure of electrical currents within lightning flashes.

Main Methods:

  • Utilizing data from the LOFAR radio telescope to observe lightning events.
  • Developing a computational pipeline to process radio signals and construct 3-D lightning maps.
  • Analyzing the spatial and temporal characteristics of radio sources associated with lightning.

Main Results:

  • LOFAR achieves meter-level precision in mapping lightning, even for flashes over 20 km away.
  • The system can potentially locate over 10,000 sources per lightning flash.
  • LOFAR is the first system capable of resolving the spatial structure of electrical currents during individual lightning leader steps.

Conclusions:

  • LOFAR provides unprecedented precision for 3-D lightning mapping.
  • This technology enhances the study of electrical processes within lightning.
  • LOFAR's capabilities open new avenues for lightning research and atmospheric studies.