Analysis of Electric and Magnetic Lightning-Generated Wave Amplitudes Measured by the Van Allen Probes

J. F. Ripoll, T. Farges, D. M. Malaspina, E. H. Lay, G. S. Cunningham, G. B. Hospodarsky, C. A. Kletzing, J. R. Wygant

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4 Scopus citations

Abstract

We provide a statistical analysis of both electric and magnetic field wave amplitudes of very low frequency lightning-generated waves (LGWs) based on the equivalent of 11.5 years of observations made by the Van Allen Probes encompassing ~24.6 × 106 survey mode measurements. We complement this analysis with data from the ground-based World Wide Lightning Location Network to explore differences between satellite and ground-based measurements. LGW mean amplitudes are found to be low compared with other whistler mode waves (1 ± 1.6 pT and 19 ± 59 μV/m). Extreme events (1/5,000) can reach 100 pT and contributes strongly to the mean power below L = 2. We find excellent correlations between World Wide Lightning Location Network-based power and wave amplitudes in space at various longitudes. We reveal strong dayside ionospheric damping of the LGW electric field. LGW amplitudes drop for L < 2, contrary to the Earth's intense equatorial lightning activity. We conclude that it is difficult for equatorial LGW to propagate and remain at L < 2.

Original languageEnglish (US)
Article numbere2020GL087503
JournalGeophysical Research Letters
Volume47
Issue number6
DOIs
StatePublished - Mar 28 2020

Bibliographical note

Funding Information:
The authors wish to thank the World Wide Lightning Location Network ( http://wwlln.net ), a collaboration among over 50 universities and institutions, for providing the lightning location data used in this paper. The data used in this paper are available from any WWLLN host or may be ordered from links ( http://wwlln.net ). We thank the Satellite Situation Center Locator operated online by NASA for providing RBSP trajectories. This work was performed under the auspices of an agreement between CEA/DAM and NNSA/DP on cooperation on fundamental science. The authors acknowledge the International Space Sciences Institute (ISSI) and the participants in a 2020 ISSI workshop in Bern. Part of the research presented in this article was supported by the Laboratory Directed Research and Development program of Los Alamos National Laboratory under project number 20180449ER. The authors thank the entire Van Allen Probes team, and especially the EFW and EMFISIS teams for their support. D. M. was supported for this work by NASA Award NAS5‐01072 and NASA Grant 80NSSC18K1034. The Van Allen Probes data used in this paper are available at a publicly accessible NASA data repository. The data are available at SPDF‐CDAWeb website ( https://cdaweb.gsfc.nasa.gov ). All Van Allen Probes data used in this work are available from the EFW and EMFISIS team websites (which one can link to http://rbspgway.jhuapl.edu ).

Funding Information:
The authors wish to thank the World Wide Lightning Location Network (http://wwlln.net), a collaboration among over 50 universities and institutions, for providing the lightning location data used in this paper. The data used in this paper are available from any WWLLN host or may be ordered from links (http://wwlln.net). We thank the Satellite Situation Center Locator operated online by NASA for providing RBSP trajectories. This work was performed under the auspices of an agreement between CEA/DAM and NNSA/DP on cooperation on fundamental science. The authors acknowledge the International Space Sciences Institute (ISSI) and the participants in a 2020 ISSI workshop in Bern. Part of the research presented in this article was supported by the Laboratory Directed Research and Development program of Los Alamos National Laboratory under project number 20180449ER. The authors thank the entire Van Allen Probes team, and especially the EFW and EMFISIS teams for their support. D.?M. was supported for this work by NASA Award NAS5-01072 and NASA Grant 80NSSC18K1034. The Van Allen Probes data used in this paper are available at a publicly accessible NASA data repository. The data are available at SPDF-CDAWeb website (https://cdaweb.gsfc.nasa.gov). All Van Allen Probes data used in this work are available from the EFW and EMFISIS team websites (which one can link to http://rbspgway.jhuapl.edu).

Publisher Copyright:
©2020. American Geophysical Union. All Rights Reserved.

Keywords

  • WWLLN database
  • electric wave power
  • lightning-generated waves
  • magnetic wave power
  • radiation belts

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