Data for "Lightning Interferometry Uncertainty, 'Focused Interferometry', and Evidence of Lightning being Ignited by a Cosmic-ray Shower" by Shao et al.

Shao, Xuan-Min

doi:10.6084/m9.figshare.12098562

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“…The data for the uncertainty analysis are presented in the paper. The BIMAP data used for this paper can be found at https://doi.org/10.6084/m9.figshare.12098562 (Bowers, 2020).…”

Section: Appendix A: Overlap Of Consecutive Correlation Windows In In...mentioning

confidence: 99%

Lightning Interferometry Uncertainty, Beam Steering Interferometry, and Evidence of Lightning Being Ignited by a Cosmic Ray Shower

Shao

Bowers

et al. 2020

JGR Atmospheres

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We present an uncertainty analysis on correlation-based time delay estimate, the basis for broadband lightning interferometry. A normal interferometry would yield much higher uncertainties than the theoretically predicted lower bound due to finite correlation window lengths. However, if the signals are aligned in time, the uncertainties approach the lower bound and can be used to indicate the interferometric uncertainties. Based on this, we introduce a beam steering interferometry technique. It first estimates a direction centroid for the lightning sources with a normal interferometry and computes the time delays among the signals. It then shifts the raw data with the time delays to align the signals roughly in time and reprocess the aligned signals. It finally pushes the reprocessed results to their correct positions, based on the time delays estimated in the first step. We apply this technique on a fast positive breakdown (FPB) process that started a normal intracloud lightning. The FPB process is shown to have a much more complex structure and development than a normal interferometry would provide. More importantly, from both interferometric and polarization analyses, the FPB appears to be ignited by a cosmic ray shower (CRS). We estimate the radio frequency strength and frequency content related to a presumed CRS in a thunderstorm electric field and find that they are in agreement with the observations. We examine the electric field effect of the CRS front and find that it could raise the field above the threshold for positive breakdown and is capable of igniting the FPB (and the lightning).

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“…The data for the uncertainty analysis are presented in the paper. The BIMAP data used for this paper can be found at https://doi.org/10.6084/m9.figshare.12098562 (Bowers, 2020).…”

Section: Appendix A: Overlap Of Consecutive Correlation Windows In In...mentioning

confidence: 99%

Lightning Interferometry Uncertainty, Beam Steering Interferometry, and Evidence of Lightning Being Ignited by a Cosmic Ray Shower

Shao

Bowers

et al. 2020

JGR Atmospheres

Self Cite

View full text Add to dashboard Cite

show abstract

Data for "Lightning Interferometry Uncertainty, 'Focused Interferometry', and Evidence of Lightning being Ignited by a Cosmic-ray Shower" by Shao et al.

Cited by 1 publication

References 0 publications

Lightning Interferometry Uncertainty, Beam Steering Interferometry, and Evidence of Lightning Being Ignited by a Cosmic Ray Shower

Lightning Interferometry Uncertainty, Beam Steering Interferometry, and Evidence of Lightning Being Ignited by a Cosmic Ray Shower

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