[M-IS27] Atmospheric electricity: Atmospheric electricity and climate change

[MIS27-02] Long-term variation in atmospheric aerosol particles over the central Tokyo and the summit of Mt. Fuji

★Invited Papers

*Kazuhiko Miura^1,2, Tatsuhiro Mori^1,3, Yoko Iwamoto^1,4, Sayako Ueda^1,5, Hiroki Igarashi¹, Masahiro Momoi^1,6, Kazuma Aoki^1,7, Temma Saito^1,3, Yoshiki Ito^1,8, Hiroshi Okochi⁹, Shungo Kato¹⁰, Ryuichi Wada¹¹ (1.Faculty of Science, Tokyo University of Science, 2.Laboratory for Environmental Research at Mount Fuji, 3.Graduate School of Science, The University of Tokyo, 4.Graduate School of Integrated Sciences for Life, Hiroshima University, 5.Graduate School of Environmental Studies, Nagoya University, 6.Center for Environ. Remote Sensing, Chiba University, 7.Faculty of Science, University of Toyama, 8.Graduate School of Environmental Science, Hokkaido University, 9.Faculty of Science and Engineering, School of Creative Science and Engineering, Waseda University, 10.Faculty of Urban Environmental Sciences, Tokyo Metropolitan University, 11.Faculty of Life and Environmental Sciences, Teikyo University of Science)

Keywords:Tokyo Skytree, summit of Mt. Fuji, long term variation, size distribution, optical thickness, new particle formation

Abstract
Atmospheric aerosols have been observed at Kagurazaka since 1980, at the height of 458m at Tokyo Skytree Tower since 2016, and at the summit of Mt. Fuji since 2006. Aerosol reduction has been observed near the ground and in the free troposphere regardless of particle size. This reduction is pleasing given its health implications, but not only pleasing given its role in cooling the climate. It is necessary to understand what is decreasing and how much it is decreasing, and to connect it to global warming countermeasures.
Acknowledgments
The observations at the summit of Mt. Fuji were carried out during the period when the certified NPO "Mt. Fuji Weather Station Utilization Association" borrowed and managed a part of the weather station facilities at the summit of Mt. Fuji from the Japan Meteorological Agency. Observations at the Tokyo Sky Tree 458m were carried out in collaboration with Tokyo University of Science, National Research Institute for Earth Science and Disaster Resilience, and the National Institute of Polar Research.