Diurnal variation of atmospheric electric field at the summit of Mount Fuji, Japan, distinctly different from the Carnegie curve in the summertime

Masashi Kamogawa, Yuko Suzuki, Rikuma Sakai, Hironobu Fujiwara, Tatsuo Torii, Yoshihiro Kakinami, Yasuyuki Watanabe, Ryoe Sato, Satoshi Hashimoto, Hiroshi Okochi, Kazuhiko Miura, Hiroshi Yasuda, Yoshiaki Orihara, Tomoyuki Suzuki

研究成果: Article

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In fair weather, a clear diurnal variation of atmospheric electric field (AEF), which is distinctly different from the global diurnal variation, i.e., Carnegie curve, was observed during the summer time (July and August) of the year 2010 and 2011 at the summit of Mount Fuji, Japan (3776 m in altitude). The variation of the AEF at the summit showed a local time dependent feature, which means that the AEF increased at sunrise and decreased at sunset. This local diurnal variation is known as a mountain variation. The intensity of AEF in the daytime reached 1.5-3 times larger than that in the nighttime. From the multipoint observations of cloud images and AEF, the mountain variation was found to be attributable to the AEF generated by the positively charged top of a horizontally extensive sea of clouds below the summit. Since the sea of clouds grows with the temperature rise, the AEF variation follows local time.

元の言語English
ページ(範囲)3019-3023
ページ数5
ジャーナルGeophysical Research Letters
42
発行部数8
DOI
出版物ステータスPublished - 2015 4 28

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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    Kamogawa, M., Suzuki, Y., Sakai, R., Fujiwara, H., Torii, T., Kakinami, Y., Watanabe, Y., Sato, R., Hashimoto, S., Okochi, H., Miura, K., Yasuda, H., Orihara, Y., & Suzuki, T. (2015). Diurnal variation of atmospheric electric field at the summit of Mount Fuji, Japan, distinctly different from the Carnegie curve in the summertime. Geophysical Research Letters, 42(8), 3019-3023. https://doi.org/10.1002/2015GL063677