Fumio Nakazawa^1,2, *Naoko Nagatsuka¹, Kumiko Goto-Azuma^1,2, Dorthe Dahl-Jensen³, Jørgen Peder Steffensen³ (1.National Institute of Polar Research, 2.SOKENDAI (The Graduate University of Advanced Studies), 3.Niels Bohr Institute, University of Copenhagen)

*Sergey Bulat¹, Maxim Doronin¹, Georgy Pavlov¹, Denis Karlov¹, Dominique Marie², Jean-Robert Petit³ (1.Petersburg Nuclear Physics Institute, NRC KI, St Petersburg, Russia, 2.Station Biologique de Roscoff, CNRS, Roscoff, France, 3.Institut des Géosciences de l’Environnement, CNRS/G-INP/IRD/UGA, Grenoble, France)

*Ryu Uemura¹, Dome Fuji ice core Research Group² (1.University of the Ryukyus, 2.National Instititute of Polar Research)

*Shuji Fujita^1,2, Frédéric Parrenin Parrenin^3,4, Ayako Abe-Ouchi^5,6, Kenji Kawamura^1,2, V. MASSON-DELMOTTE⁷, Hideaki Motoyama^1,2, Fuyuki Saito SAITO⁶, M. Fujita SEVERI⁸, B. STENNI⁹, Ryu Uemura¹⁰, E. W. Wolff¹¹ (1.National Institute of Polar Research, Research Organization of Information and Systems(ROIS), 2.Department of Polar Science, The Graduate University for Advanced Studies (SOKENDAI), 3.CNRS, LGGE, F-38041 Grenoble, France, 4.University Grenoble Alpes, LGGE, F-38041 Grenoble, France, 5.Atmosphere and Ocean Research Institute (AORI), University of Tokyo, Chiba, Japan, 6.Japan Agency for Marine–Earth Science and Technology, Yokohama, Japan, 7.Laboratoire des Sciences du Climat et de l’Environnement, Institut Pierre Simon Laplace, UMR CEA-CNRS-UVSQ-UPS 8212, Gif-sur-Yvette, France, 8.Department of Chemistry, University of Florence, Florence, Italy, 9.Department of Environmental Sciences, Informatics and Statistics, Ca’ Foscari University Venice, 30123 Venice, Italy, 10.Department Chemistry, Biology and Marine Science, Faculty of Science, University of the Ryukyus, Okinawa, Japan, 11.Department of Earth Sciences, University of Cambridge, UK)

*Ikumi Oyabu¹, Kenji Kawamura^1,2,3, Kyotaro Kitamura¹ (1.National Institute of Polar Research, Research Organization of Information and Systems, 2.SOKENDAI (The Graduate University of Advanced Studies), 3.Japan Agency for Marine Science and Technology)

*Kenji Kawamura^1,2,3, Ice Core Consortium (1.National Institute of Polar Research, Research Organization of Information and Systems, 2.SOKENDAI, 3.JAMSTEC)

*Hiroko Miyahara¹, Kazuho Horiuchi², Fuyuki Tokanai³, Toru Moriya³, Yusuke Yokoyama⁴, Hiroyuki Matsuzaki⁴, Hideaki Motoyama⁵ (1.Musashino Art University, 2.Hirosaki Univ., 3.Yamagata Univ., 4.The Univ. of Tokyo, 5.National Institute of Polar Research)

Ryoto Furukawa¹, *Ryu Uemura², Koji Fujita³, Jesper Sjolte⁴, Kei Yoshimura⁵, Sumito Matoba¹, Iizuka Yoshinori¹ (1.Institite of Low Temperature Science, Hokkaido University, 2.Department of Chemistry, Biology, and Marine Science, Faculty of Science, University of the Ryukyus, 3.Graduate School of Environmental Studies, Nagoya University, 4.Department of Geology, Quaternary Science, Lund University, 5.Institute of Industrial Science, the University of Tokyo)

*Iizuka Yoshinori¹, Koji Fujita², Shohei Hattori³, Ryu Uemura⁴, Osamu Seki¹, Chihiro Miyamoto⁵, Toshitaka Suzuki⁶, Naohiro Yoshida^3,7, Hideaki Motoyama⁸, Sumito Matoba¹ (1.Institite of Low Temperature Science, Hokkaido University, 2.Graduate School of Environmental Studies, Nagoya University, 3.Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4.Department of Chemistry, Biology, and Marine Science, Faculty of Science, University of the Ryukyus, 5.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 6.Department of Earth and Environmental Sciences, Faculty of Science, Yamagata University, 7.Earth-Life Science Institute, Tokyo Institute of Technology, 8.National Institute of Polar Research)

*Akane Tsushima¹, Vasileios Gkinis², Kumiko Goto-Azuma³, Sumito Matoba⁴, Hideaki Motoyama³ (1.Research Institute for Humanity and Nature, 2.Niels Bohr Institute, University of Copenhagen, 3.National Institute of Polar Research, 4.Institute of Low Temperature Science, Hokkaido University)