Lightning Interferometry with the Long Wavelength Array

Stock, Michael; Tilles, Julia; Taylor, Greg; Dowell, Jayce; Liu, Ningyu

doi:10.3390/rs15143657

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The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

i

Lightning Interferometry with the Long Wavelength Array

2023
By Stock, Michael ; Tilles, Julia ; Taylor, Greg ; ...
Source: Remote Sensing, 15(14), 3657

[PDF-1.56 MB]

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Details:

Journal Title:

Remote Sensing
Personal Author:

Stock, Michael ; Tilles, Julia ; Taylor, Greg ; Dowell, Jayce ; Liu, Ningyu

Stock, Michael ; Tilles, Julia ; Taylor, Greg ; Dowell, Jayce ; Liu, Ningyu Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CIWRO (Cooperative Institute for Severe and High-Impact Weather Research and Operations) ; NSSL (National Severe Storms Laboratory)

OAR (Oceanic and Atmospheric Research) ; CIWRO (Cooperative Institute for Severe and High-Impact Weather Research and Operations) ; NSSL (National Severe Storms Laboratory) Less -
Description:

The Long Wavelength Array is a radio telescope array located at the Sevilleta National Wildlife Refuge in La Joya, New Mexico, well suited and situated for the observation of lightning. The array consists of 256 high-sensitivity dual polarization antennas arranged in a 100 m diameter. This paper demonstrates some of the capabilities that the array brings to the study of lightning. Once 32 or more antennas are used to image lightning radio sources, virtually every integration period longer than the impulse response of the array includes at least one identifiable lightning emitter, independent of the integration period used. The use of many antennas also allows multiple simultaneous lightning radio sources to be imaged at sub-microsecond timescales; for the flash examined, 51% of the images contained more than one lightning source. Finally, by using many antennas to image lightning sources, the array is capable of locating sources fainter than the galactic background radio noise level, yielding possibly the most sensitive radio maps of lightning to date. This incredible sensitivity enables, for the first time, the emissions originating from the positive leader tips of natural in-cloud lightning to be detected and located. The tip emission is distinctly different from needle emission and is most likely due to positive breakdown.
Keywords:

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General Earth and Planetary Sciences
Source:

Remote Sensing, 15(14), 3657
DOI:

https://doi.org/10.3390/rs15143657
ISSN:

2072-4292
Format:

PDF
Publisher:

MDPI AG
Document Type:

Journal Article
Funding:

Grant no. NA21OAR4320204
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:ee4e8d8ea617ab87eebffd66f4028ebede445662181211a1819bc4d69443c7e5
Download URL:

https://repository.library.noaa.gov/view/noaa/52253/noaa_52253_DS1.pdf
File Type:

Machine readable version (XML)

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