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Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs
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Lightning Geolocation and Flash Rates From LF Radio Observations During the RELAMPAGO Field Campaign.

A Antunes de Sá1, R Marshall1, W Deierling1,2

  • 1Smead Aerospace Engineering Sciences Department University of Colorado Boulder Boulder CO USA.

Earth and Space Science (Hoboken, N.J.)
|October 25, 2021
PubMed
Summary
This summary is machine-generated.

The low-frequency (LF) radio lightning locating system (LLS) from the RELAMPAGO campaign provides valuable data on lightning evolution in severe storms. This LF LLS data offers unique insights into discharge characteristics and storm dynamics, aiding high-impact weather research.

Keywords:
GLMRELAMPAGOVLF/LFdetection efficiencylightning location systemthunderstorm research

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Area of Science:

  • Atmospheric Science
  • Meteorology
  • Geophysics

Background:

  • Convective storms producing high-impact weather are a significant research area.
  • Existing lightning detection systems have limitations in range and the type of data they collect.
  • The Remote sensing of Electrification, Lightning, and Mesoscale/Microscale Processes with Adaptive Ground Observation (RELAMPAGO) field campaign aimed to improve lightning data collection.

Purpose of the Study:

  • To describe the geolocation and data processing of LF LLS data from the RELAMPAGO field campaign.
  • To characterize the performance of the LF LLS data, including location accuracy and detection efficiency.
  • To highlight the utility of LF LLS data for studying lightning characteristics and storm evolution.

Main Methods:

  • Deployment of a low-frequency (LF) radio lightning locating system (LLS) during the RELAMPAGO field campaign in Argentina.
  • Detailed description of the geolocation and data processing techniques applied to the collected LF data.
  • Performance characterization, including location accuracy (better than 10 km) and comparison of detection efficiency (DE) with the Geostationary Lightning Mapper (GLM).

Main Results:

  • The LF LLS data set provides valuable measurements such as discharge peak current, lightning polarity, and waveform-based type classification.
  • Data analysis revealed robust flash clustering and insightful flash rate and peak current measures.
  • Comparison with GLM showed spatiotemporal DE losses in the LF data set, which can be managed.

Conclusions:

  • LF LLS data from RELAMPAGO offers unique and valuable information for mesoscale studies of lightning in severe convective storms.
  • The data's strengths, including detailed discharge characteristics and flash rates, complement other detection methods.
  • Understanding and managing the limitations, such as DE losses, is crucial for maximizing the data's utility in high-impact weather research.