*Kotaro Toyama¹, Hirochika Sumino¹, Kaori Kawana¹, Yoshihide Akiyama¹, Takeshi Ohba², Muga Yaguchi³, Akihiko Terada⁴ (1.Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 2.Department of chemistry, School of Science, Tokia University, 3.Meteorological Research Institute, 4.Volcanic Fluid Research Center, Tokyo Institute of Technology)

*Kotaro Toyama¹, Hirochika Sumino¹, Kaori Kawana¹, Yoshihide Akiyama¹, Takeshi Ohba², Muga Yaguchi³, Akihiko Terada⁴ (1.Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 2.Department of chemistry, School of Science, Tokia University, 3.Meteorological Research Institute, 4.Volcanic Fluid Research Center, Tokyo Institute of Technology)

*Takeshi Ohba¹, Muga Yaguchi², Kotaro Toyama³, Hirochika Sumino³, Urumu Tsunogai⁴, Masanori Ito⁴, Ryo Shingubara⁴ (1.Department of chemistry, School of Science, Tokia University, 2.Meteorological Research Institute, 3.The University of Tokyo Graduate School of Arts and Sciences Department of Basic Science, 4.Nagoya University Graduate School of Environmental Studies)

*Kotaro Toyama¹, Hirochika Sumino¹, Kaori Kawana¹, Takeshi Ohba², Muga Yaguchi³, Yoshihide Akiyama¹, Koki Aizawa⁴, Kaori Tsukamoto⁴ (1.Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 2.Department of chemistry, School of Science, Tokia University, 3.Meteorological Research Institute, 4.Institute of Seismology and Volcanology, Faculty of Science, Kyushu University)

*Takeshi Ohba¹, Muga Yaguchi², Nozomi Numanami¹, Kotaro Toyama³, Hirochika Sumino³, Urumu Tsunogai⁴, Masanori Ito⁴, Ryo Shingubara⁴ (1.Department of chemistry, School of Science, Tokia University, 2.Meteorological Research Institute, JMA, 3.The University of Tokyo Graduate School of Arts and Sciences Department of Basic Science, 4.Nagoya University Graduate School of Environmental Studies)

*Muga Yaguchi¹, Takeshi Ohba², Kotaro Toyama³, Fukuoka Regional Headquarters JMA⁴, Kagoshima Meteorological Office JMA⁴ (1.Meteorological Research Institute, 2.Tokai University, 3.Graduate School of the University of Tokyo, 4.Japan Meteorological Agency)