Negative Excursion of Surface Electric Fields During Gamma‐Ray Glows in Winter Thunderstorms
Y. Wada,
M. Kamogawa,
M. Kubo
et al.
Abstract:During the 2020–2021 winter season, we detected 6 gamma‐ray glows at Kanazawa University, Japan. Negative surface electric fields (E‐fields; in the sign convention of atmospheric electricity) were observed by a field mill during all the glow cases. In five of the six cases, the peak E‐field reached around −12 kV m−1, and the E‐field during the glow detection was the strongest in the interval including 3 hr before and after the detection time. Therefore, negative charges should have been dominant in the thunder… Show more
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