Journal
GEOPHYSICAL RESEARCH LETTERS
Volume 43, Issue 16, Pages 8728-8734Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1002/2016GL070154
Keywords
terrestrial gamma ray flashes; energetic in-cloud pulses; lightning; ground detection
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Funding
- National Science Foundation Dynamic and Physical Meteorology program [ATM-1047588]
- DARPA Nimbus program [HR0011-10-10059]
- Science Foundation Ireland [12/IP/1288]
- Directorate For Geosciences
- Div Atmospheric & Geospace Sciences [1205727, 1352144, 1565606] Funding Source: National Science Foundation
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Terrestrial gamma ray flashes (TGFs) are brief bursts of energetic gammy-ray photons generated during thunderstorms, which have been detected almost exclusively by satellite-based instruments. Here we present three lines of evidence which includes the three out of three simultaneously observed pairs, the same occurrence contexts, and the consistent estimated occurrence rate, which indicate a direct relationship between a subset of TGFs and a class of energetic radio signal easily detectable by ground-based sensors. This connection indicates that these gamma ray and radio emissions are two views of the same phenomenon and further enable detection of these TGFs from ground distant radio signals alone. Besides dramatically increasing the detection rate of TGFs, this ground detection approach can identify TGFs in continental and coastal areas that are at latitudes too high for present TGF-detecting satellites and will provide more insights into the mechanism of TGF production.
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