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Updated: Nov 19, 2025

Surface Renewal: An Advanced Micrometeorological Method for Measuring and Processing Field-Scale Energy Flux Density Data
Published on: December 12, 2013
Periodic oscillations of atmospheric electric field during snowfall in the Tokyo metropolitan area
Hiroyo Ohya1, Kota Nakamori2, Toshiaki Takano2
1Graduate School of Engineering, Chiba University, Chiba, 263-8522, Japan. ohya@faculty.chiba-u.jp.
Abstract:
We report the first observations of periodic oscillations of an atmospheric electric field simultaneously derived by field mills at four observation sites at a distance of 50-65 km in metropolitan Tokyo. Oscillations were detected during a snowfall event on 23-24 November, 2016. The main period of the oscillations of the atmospheric electric field at CHB was 78 min, which was similar to those at other sites. The periods of 39.0, 54.6, and 78.0 min observed at Chiba (CHB) were similar to those observed by W-band cloud radar (FALCON-I) reflectivity below a height of 5 km. High coherence of the 78-min period between the atmospheric electric field at CHB and the X-band phased array weather radar reflectivity suggest that the periodic oscillations of the atmospheric electric field during snowfall were caused by vertically convective cells in snow clouds with a radius of 60 km centered on CHB.
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