Faculty Profiles - UEMURA Ryu

Papers - UEMURA Ryu

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Multidecadal hydroclimate responses to volcanic forcing in the Mid-Holocene Reviewed International coauthorship

Syed Azharuddin, Kanako Omine, Kosuke Masaka, Ryuji Asami, Mahjoor Ahmad Lone, Yu-Chen Chou, Chuan-Chou Shen, Ryu Uemura

Communications Earth & Environment Vol. 6 page： Article number: 101 2025.2

Contrasting Responses of Ion Concentration Variations to Atmospheric Patterns in Central Himalayan Ice Cores Reviewed International journal

Tsushima, A; Esashi, N; Matoba, S; Iizuka, Y; Uemura, R; Adachi, K; Kinase, T; Hirabayashi, M; Kawakami, K; Kayastha, RB; Fujita, K

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Vol. 130 ( 2 ) 2025.1

A snapshot of the climate in the Middle Pleistocene inferred from a stalagmite from central Japan Reviewed International coauthorship International journal

Masataka Sakai, Masako Hori, Ryu Uemura, Bassam Ghaleb, Daniele Pinti, Mahiro Yumiba, Masafumi Murayama, Akihiro Kano

Geoscience Letters Vol. 11 ( 1 ) page： 41 2024.9

SE-Dome II ice core dating with half-year precision: Increasing melting events from 1799 to 2020 in southeastern Greenland Reviewed

Kaoru Kawakami, Yoshinori Iizuka, Mahiro Sasage, Mai Matsumoto, Takeshi Saito, Akira Hori, Sakiko Ishino, Shuji Fujita, Koji Fujita, Keita Takasugi, Takumi Hatakeyama, Saaya Hamamoto, Akihisa Watari, Nao Esashi, Miu Otsuka, Ryu Uemura, Kazuho Horiuchi, Masahiro Minowa, Shohei Hattori, Teruo Aoki, Motohiro Hirabayashi, Kenji Kawamura, Sumito Matoba

Journal of Geophysical Research: Atmospheres Vol. 128 page： e2023JD038874 2023.10

The noble gas and nitrogen relationship between Ryugu and carbonaceous chondrites Reviewed International coauthorship

David J. Byrne; Evelyn Füri; Laurent Zimmermann; Bernard Marty; Ryuji Okazaki; Toru Yada; Fumio Kitajima; Shogo Tachibana; Kasumi Yogata; Kanako Sakamoto; Hisayoshi Yurimoto; Tomoki Nakamura; Takaaki Noguchi; Hiroshi Naraoka; Hikaru Yabuta; Sei-ichiro Watanabe; Yuichi Tsuda; Masahiro Nishimura; Aiko Nakato; Akiko Miyazaki; Masanao Abe; Tatsuaki Okada; Tomohiro Usui; Makoto Yoshikawa; Takanao Saiki; Satoshi Tanaka; Fuyuto Terui; Satoru Nakazawa; Henner Busemann; Ko Hashizume; Jamie D. Gilmour; Alex Meshik; My E. I. Reibe; Daniela Krietsch; Colin Maden; Akizumi Ishida; Patricia L. Clay; Sarah A. Crowther; Lydia Fawcett; Thomas Lawton; Olga Pravdivtseva; Yayoi N. Miura; Jisun Park; Ken-ichi Bajo; Yoshinori Takano; Keita Yamada; Shinsuke Kawagucci; Yohei Matsui; Mizuki Yamamoto; Kevin Righter; Saburo Sakai; Naoyoshi Iwata; Naoki Shirai; Shun Sekimoto; Makoto Inagaki; Mitsuru Ebihara; Reika Yokochi; Kunihiko Nishiizumi; Keisuke Nagao; Jong Ik Lee; Akihiro Kano; Marc, W. Caffee; Ryu Uemura

Geochimica et Cosmochimica Acta Vol. 345 page： 62 - 74 2023.3

Noble gases and nitrogen in samples of asteroid Ryugu record its volatile sources and recent surface evolution Reviewed International coauthorship

Ryuji Okazaki, Bernard Marty, Henner Busemann, Ko Hashizume, Jamie D. Gilmour, Alex Meshik, Toru Yada, Fumio Kitajima, Michael W. Broadley, David Byrne, Evelyn Füri, My E. I. Riebe, Daniela Krietsch, Colin Maden, Akizumi Ishida, Patricia Clay, Sarah A. Crowther, Lydia Fawcett, Thomas Lawton, Olga Pravdivtseva, Yayoi N. Miura, Jisun Park, Ken-ichi Bajo, Yoshinori Takano, Keita Yamada, Shinsuke Kawagucci, Yohei Matsui, Mizuki Yamamoto, Kevin Righter, Saburo Sakai, Naoyoshi Iwata, Naoki Shirai, Shun Sekimoto, Makoto Inagaki, Mitsuru Ebihara, Reika Yokochi, Kunihiko Nishiizumi, Keisuke Nagao, Jong Ik Lee, Akihiro Kano, Marc W. Caffee, Ryu Uemura, Tomoki Nakamura, Hiroshi Naraoka, Takaaki Noguchi, Hikaru Yabuta, Hisayoshi Yurimoto, Shogo Tachibana, Hirotaka Sawada, Kanako Sakamoto, Masanao Abe, Masahiko Arakawa, Atsushi Fujii, Masahiko Hayakawa, Naoyuki Hirata, Naru Hirata, Rie Honda, Chikatoshi Honda, Satoshi Hosoda, Yu-ichi Iijima, Hitoshi Ikeda, Masateru Ishiguro, Yoshiaki Ishihara, Takahiro Iwata, Kosuke Kawahara, Shota Kikuchi, Kohei Kitazato, Koji Matsumoto, Moe Matsuoka, Tatsuhiro Michikami, Yuya Mimasu, Akira Miura, Tomokatsu Morota, Satoru Nakazawa, Noriyuki Namiki, Hirotomo Noda, Rina Noguchi, Naoko Ogawa, Kazunori Ogawa, Tatsuaki Okada, Chisato Okamoto, Go Ono, Masanobu Ozaki, Takanao Saiki, Naoya Sakatani, Hiroki Senshu, Yuri Shimaki, Kei Shirai, Seiji Sugita, Yuto Takei, Hiroshi Takeuchi, Satoshi Tanaka, Eri Tatsumi, Fuyuto Terui, Ryudo Tsukizaki, Koji Wada, Manabu Yamada, Tetsuya Yamada, Yukio Yamamoto, Hajime Yano, Yasuhiro Yokota, Keisuke Yoshihara, Makoto Yoshikawa, Kent Yoshikawa, Shizuho Furuya, Kentaro Hatakeda, Tasuku Hayashi, Yuya Hitomi, Kazuya Kumagai, Akiko Miyazaki, Aiko Nakato, Masahiro Nishimura, Hiromichi Soejima, Ayako Iwamae, Daiki Yamamoto, Kasumi Yogata, Miwa Yoshitake, Ryota Fukai, Tomohiro Usui, Harold C. Connolly, Dante Lauretta, Sei-ichiro Watanabe and Yuichi Tsuda

Science Vol. 379 ( 6634 ) page： eabo0431 2023.2

Development of Cavity Ring-down Spectrometer for Tritiated/Heavy Water Samples

Kazuki Iwamoto, Keisuke Saito, Yuta Suzuki, Ryu Uemura, Osamu Abe, Hisashi Abe, Norihiko Nishizawa, and Hideki Tomita

Proceedings of Optica Advanced Photonics Congress 2022 2022.12

First asteroid gas sample delivered by the Hayabusa2 mission: A treasure box from Ryugu Reviewed International coauthorship

Ryuji Okazaki, Yayoi N. Miura, Yoshinori Takano, Hirotaka Sawada, Kanako Sakamoto, Toru Yada, Keita Yamada, Shinsuke Kawagucci, Yohei Matsui, Ko Hashizume, Akizumi Ishida, Michael W. Broadley, Bernard Marty, David Byrne, Evelyn Füri, Alex Meshik, Olga Pravdivtseva, Henner Busemann, My E.I. Riebe, Jamie Gilmour, Jisun Park, Ken-ichi Bajo, Kevin Righter, Saburo Sakai, Shun Sekimoto, Fumio Kitajima, Sarah A. Crowther, Naoyoshi Iwata, Naoki Shirai, Mitsuru Ebihara, Reika Yokochi, Kunihiko Nishiizumi, Keisuke Nagao, Jong Ik Lee, Patricia Clay, Akihiro Kano, Marc W. Caffee, Ryu Uemura, Makoto Inagaki, Daniela Krietsch, Colin Maden, Mizuki Yamamoto, Lydia Fawcett, Thomas Lawton, Tomoki Nakamura, Hiroshi Naraoka, Takaaki Noguchi, Hikaru Yabuta, Hisayoshi Yurimoto, Yuichi Tsuda, Sei-ichiro Watanabe, Masanao Abe, Masahiko Arakawa, Atsushi Fujii, Masahiko Hayakawa, Naoyuki Hirata, Naru Hirata, Rie Honda, Chikatoshi Honda, Satoshi Hosoda, Yu-ichi Iijima, Hitoshi Ikeda, Masateru Ishiguro, Yoshiaki Ishihara, Takahiro Iwata, Kosuke Kawahara, Shota Kikuchi, Kohei Kitazato, Koji Matsumoto, Moe Matsuoka, Tatsuhiro Michikami, Yuya Mimasu, Akira Miura, Tomokatsu Morota, Satoru Nakazawa, Noriyuki Namiki, Hirotomo Noda, Rina Noguchi, Naoko Ogawa, Kazunori Ogawa, Tatsuaki Okada, Chisato Okamoto, Go Ono, Masanobu Ozaki, Takanao Saiki, Naoya Sakatani, Hiroki Senshu, Yuri Shimaki, Kei Shirai, Seiji Sugita, Yuto Takei, Hiroshi Takeuchi, Satoshi Tanaka, Eri Tatsumi, Fuyuto Terui, Ryudo Tsukizaki, Koji Wada, Manabu Yamada, Tetsuya Yamada, Yukio Yamamoto, Hajime Yano, Yasuhiro Yokota, Keisuke Yoshihara, Makoto Yoshikawa, Kent Yoshikawa, Shizuho Furuya, Kentaro Hatakeda, Tasuku Hayashi, Yuya Hitomi, Kazuya Kumagai, Akiko Miyazaki, Aiko Nakato, Masahiro Nishimura, Hiromichi Soejima, Ayako Iwamae, Daiki Yamamoto, Kasumi Yogata, Miwa Yoshitake, Ryota Fukai, Tomohiro Usui, Trevor Ireland, Harold C. Connolly Jr., Dante S. Lauretta, and Shogo Tachibana

Science Advances Vol. 8 page： eabo7239 2022.10

High Flux of Small Sulfate Aerosols During the 1970s Reconstructed From the SE-Dome Ice Core in Greenland Reviewed

Y. Iizuka, R. Uemura, H. Matsui, N. Oshima, K. Kawakami, S. Hattori, H. Ohno, S. Matoba

Journal of Geophysical Research-Atmospheres Vol. 127 ( 17 ) page： e2022JD036880 2022.8

Soluble salts in deserts as a source of sulfate aerosols in an Antarctic ice core during the last glacial period Reviewed

Ryu Uemura, Kosuke Masaka, Yoshinori Iizuka, Motohiro Hirabayashi, Hitoshi Matsui, Risei Matsumoto, Miki Uemura, Koji Fujita, Hideaki Motoyama

Earth and Planetary Science Letters Vol. 578 page： 117299 2022.1

Interglacial Antarctic-Southern Ocean climate decoupling due to moisture source area shifts Reviewed International coauthorship International journal

Landais A., Stenni B., Masson-Delmotte V, Jouzel J., Cauquoin A., Fourre E., Minster B., Selmo E., Extier T., Werner M., Vimeux F., Uemura R., Crotti I, Grisart A.

Vol. 14 ( 12 ) page： 918 2021.12

Last glacial temperature reconstructions using coupled isotopic analyses of fossil snails and stalagmites from archaeological caves in Okinawa, Japan Reviewed International coauthorship International journal

Asami Ryuji, Hondo Rikuto, Uemura Ryu, Fujita Masaki, Yamasaki Shinji, Shen Chuan-Chou, Wu Chung-Che, Jiang Xiuyang, Takayanagi Hideko, Shinjo Ryuichi, Kano Akihiro, Iryu Yasufumi

Vol. 11 ( 1 ) page： 21922 2021.11

Reconstruction of ocean environment time series since the late nineteenth century using sclerosponge geochemistry in the northwestern subtropical Pacific Reviewed International journal

Asami Ryuji, Matsumori Taketo, Shinjo Ryuichi, Uemura Ryu, Miyaoka Yuki, Mizuyama Masaru, Ise Yuji, Sakamaki Takashi

PROGRESS IN EARTH AND PLANETARY SCIENCE Vol. 8 ( 1 ) 2021.6

Isotopic evidence for acidity-driven enhancement of sulfate formation after SO2 emission control. Reviewed International coauthorship International journal

Hattori S, Iizuka Y, Alexander B, Ishino S, Fujita K, Zhai S, Sherwen T, Oshima N, Uemura R, Yamada A, Suzuki N, Matoba S, Tsuruta A, Savarino J, Yoshida N

Vol. 7 ( 19 ) 2021.5

Evaluation of geochemical records as a paleoenvironmental proxy in the hypercalcified demosponge Astrosclera willeyana Reviewed

Ryuji Asami, Akira Kinjo, Daiki Ohshiro, Tohru Naruse, Masaru Mizuyama, Ryu Uemura, Ryuichi Shinjo, Yuji Ise, Yoshihisa Fujita, Takashi Sakamaki

Progress in Earth and Planetary Science Vol. 7 ( 1 ) 2020.5

Experimental evaluation of oxygen isotopic exchange between inclusion water and host calcite in speleothems Reviewed

Ryu Uemura, Yudai Kina, Chuan-Chou Shen, Kanako Omine

Climate of the Past Vol. 16 ( 1 ) page： 17 - 27 2020.1

Reduced marine phytoplankton sulphur emissions in the Southern Ocean during the past seven glacials Reviewed

Goto-Azuma K, Hirabayashi M, Motoyama H, Miyake T, Kuramoto T, Uemura R, Igarashi M, Iizuka Y, Sakurai T, Horikawa S, Suzuki K, Suzuki T, Fujita K, Kondo Y, Hattori S, Fujii Y

Nature Communications Vol. 10 page： 3247 2019.7

Dominant influence of the humidity in the moisture source region on the 17O-excess in precipitation on a subtropical island Reviewed

Yuina Uechi, Ryu Uemura

Earth and Planetary Science Letters Vol. 513 page： 20-28 2019.2

Marine Isotope Stage 4 in Australasia: A full glacial culminating 65,000 years ago – Global connections and implications for human dispersal Invited Reviewed International coauthorship

Patrick De Deckker, Lee J Arnold, Sander van der Kaars, Germain Bayon, Jan-Berend W Stuut, Kerstin Perner, Raquel Lopes dos Santos, Ryu Uemura, Martina Demuro

Quaternary Science Reviews Vol. 204 page： 187 - 207 2019.1

Abrupt ice-age shifts in southern westerly winds and Antarctic climate forced from the north

Christo Buizert, Michael Sigl, Mirko Severi, Bradley R. Markle, Justin J, We, stein, Joseph, R. McConnell, Joel B. Pedro, Harald Sodemann, Kumiko Goto-Azuma, Kenji Kawamura, Shuji Fujita, Hideaki Motoyama, Motohiro Hirabayashi, Ryu Uemura, Barbara Stenni, Frédéric Parrenin, Feng He, T. J. Fudge, Eric J. Steig

Nature Vol. 563 ( 7733 ) page： 681 - 685 2018.11

Language：English Publishing type：Research paper (scientific journal)

© 2018, Springer Nature Limited. The mid-latitude westerly winds of the Southern Hemisphere play a central role in the global climate system via Southern Ocean upwelling 1 , carbon exchange with the deep ocean 2 , Agulhas leakage (transport of Indian Ocean waters into the Atlantic) 3 and possibly Antarctic ice-sheet stability 4 . Meridional shifts of the Southern Hemisphere westerly winds have been hypothesized to occur 5,6 in parallel with the well-documented shifts of the intertropical convergence zone 7 in response to Dansgaard–Oeschger (DO) events— abrupt North Atlantic climate change events of the last ice age. Shifting moisture pathways to West Antarctica 8 are consistent with this view but may represent a Pacific teleconnection pattern forced from the tropics 9 . The full response of the Southern Hemisphere atmospheric circulation to the DO cycle and its impact on Antarctic temperature remain unclear 10 . Here we use five ice cores synchronized via volcanic markers to show that the Antarctic temperature response to the DO cycle can be understood as the superposition of two modes: a spatially homogeneous oceanic ‘bipolar seesaw’ mode that lags behind Northern Hemisphere climate by about 200 years, and a spatially heterogeneous atmospheric mode that is synchronous with abrupt events in the Northern Hemisphere. Temperature anomalies of the atmospheric mode are similar to those associated with present-day Southern Annular Mode variability, rather than the Pacific–South American pattern. Moreover, deuterium-excess records suggest a zonally coherent migration of the Southern Hemisphere westerly winds over all ocean basins in phase with Northern Hemisphere climate. Our work provides a simple conceptual framework for understanding circum-Antarctic temperature variations forced by abrupt Northern Hemisphere climate change. We provide observational evidence of abrupt shifts in the Southern Hemisphere westerly winds, which have previously documented 1–3 ramifications for global ocean circulation and atmospheric carbon dioxide. These coupled changes highlight the necessity of a global, rather than a purely North Atlantic, perspective on the DO cycle.

DOI： 10.1038/s41586-018-0727-5

Scopus

PubMed

A 180-year-long isotopic record of tree-ring cellulose on Okinawa Island, Japan Reviewed

Ryu Uemura, Miki Uemura, Masaki Sano, Takeshi Nakatsuka

Geochemical Journal Vol. 52 ( 6 ) page： e21 - e27 2018.11

Asynchrony between Antarctic temperature and CO2 associated with obliquity over the past 720,000 years Reviewed

Uemura Ryu, Motoyama Hideaki, Masson-Delmotte Valerie, Jouzel Jean, Kawamura Kenji, Goto-Azuma Kumiko, Fujita Shuji, Kuramoto Takayuki, Hirabayashi Motohiro, Miyake Takayuki, Ohno Hiroshi, Fujita Koji, Abe-Ouchi Ayako, Iizuka Yoshinori, Horikawa Shinichiro, Igarashi Makoto, Suzuki Keisuke, Suzuki Toshitaka, Fujii Yoshiyuki

Nature Communications Vol. 9 2018.3

Spatial variation of isotopic compositions of snowpack nitrate related to post-depositional processes in eastern Dronning Maud Land, East Antarctica Reviewed

Noro Kazushi, Hattori Shohei, Uemura Ryu, Fukui Kotaro, Hirabayashi Motohiro, Kawamura Kenji, Motoyama Hideaki, Takenaka Norimichi, Yoshida Naohiro

GEOCHEMICAL JOURNAL Vol. 52 ( 2 ) page： E7-E14 2018.3

A 60 Year Record of Atmospheric Aerosol Depositions Preserved in a High-Accumulation Dome Ice Core, Southeast Greenland Reviewed

Yoshinori Iizuka, Ryu Uemura, Koji Fujita, Shohei Hattori, Osamu Seki, Chihiro Miyamoto, Toshitaka Suzuki, Naohiro Yoshida, Hideaki Motoyama, Sumito Matoba

Journal of Geophysical Research: Atmospheres Vol. 123 ( 1 ) page： 574 - 589 2018.1

Publishing type：Research paper (scientific journal) Publisher：Wiley-Blackwell

©2017. American Geophysical Union. All Rights Reserved. The Southeastern Greenland Dome (SE-Dome) has both a high elevation and a high accumulation rate (1.01 m we yr−1), which are suitable properties for reconstructing past environmental changes with a high time resolution. For this study, we measured the major ion fluxes in a 90 m ice core drilled from the SE-Dome region in 2015 and present the records of annual ion fluxes from 1957 to 2014. From 1970 to 2010, the trend of nonsea-salt (nss) SO42− flux decreases, whereas that for NH4+ increases, tracking well with the anthropogenic SOx and NH3 emissions mainly from North America. The result suggests that these fluxes reflect histories of the anthropogenic SOx and NH3 emissions. In contrast, the decadal trend of NO3− flux differs from the decreasing trend of anthropogenic NOx emissions. Although the cause of this discrepancy remains unclear, it may be related to changes in particle formation processes and chemical scavenging rates caused by an increase in sea salt and dust and/or a decrease in nssSO42−. We also find a high average NO3− flux (1.13 mmol m−2 yr−1) in the ice core, which suggests a negligible effect from postdepositional NO3− loss. Thus, the SE-Dome region is an excellent location for reconstructing nitrate fluxes. Over a decadal time scale, our NO3− flux record is similar to those from other ice cores in Greenland high-elevation sites, suggesting that NO3− concentration records from these ice cores are reliable.

DOI： 10.1002/2017JD026733

Web of Science

Scopus

Seasonal-Scale Dating of a Shallow Ice Core From Greenland Using Oxygen Isotope Matching Between Data and Simulation Reviewed

Ryoto Furukawa, Ryu Uemura, Koji Fujita, Jesper Sjolte, Kei Yoshimura, Sumito Matoba, Yoshinori Iizuka

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES Vol. 122 ( 20 ) page： 10873 - 10887 2017.10

Publishing type：Research paper (scientific journal) Publisher：AMER GEOPHYSICAL UNION

A precise age scale based on annual layer counting is essential for investigating past environmental changes from ice core records. However, subannual scale dating is hampered by the irregular intraannual variabilities of oxygen isotope (delta O-18) records. Here we propose a dating method based on matching the delta O-18 variations between ice core records and records simulated by isotope-enabled climate models. We applied this method to a new delta O-18 record from an ice core obtained from a dome site in southeast Greenland. The close similarity between the delta O-18 records from the ice core and models enables correlation and the production of a precise age scale, with an accuracy of a few months. A missing delta O-18 minimum in the 1995/1996 winter is an example of an indistinct delta O-18 seasonal cycle. Our analysis suggests that the missing delta O-18 minimum is likely caused by a combination of warm air temperature, weak moisture transport, and cool ocean temperature. Based on the age scale, the average accumulation rate from 1960 to 2014 is reconstructed as 1.02 m yr(-1) in water equivalent. The annual accumulation rate shows an increasing trend with a slope of 3.6 mm yr(-1), which is mainly caused by the increase in the autumn accumulation rate of 2.6 mm yr(-1). This increase is likely linked to the enhanced hydrological cycle caused by the decrease in Arctic sea ice area. Unlike the strong seasonality of precipitation amount in the ERA reanalysis data in the southeast dome region, our reconstructed accumulation rate suggests a weak seasonality.

DOI： 10.1002/2017JD026716

Web of Science

A global multiproxy database for temperature reconstructions of the Common Era Reviewed

Julien Emile-Geay, Nicholas P. McKay, Darrell S. Kaufman, Lucien von Gunten, Jianghao Wang, Kevin J. Anchukaitis, Nerilie J. Abram, Jason A. Addison, Mark A.J. Curran, Michael N. Evans, Benjamin J. Henley, Zhixin Hao, Belen Martrat, Helen V. McGregor, Raphael Neukom, Gregory T. Pederson, Barbara Stenni, Kaustubh Thirumalai, Johannes P. Werner, Chenxi Xu, Dmitry V. Divine, Bronwyn C. Dixon, Joelle Gergis, Ignacio A. Mundo, Takeshi Nakatsuka, Steven J. Phipps, Cody C. Routson, Eric J. Steig, Jessica E. Tierney, Jonathan J. Tyler, Kathryn J. Allen, Nancy A.N. Bertler, Jesper BjÃ¶rklund, Brian M. Chase, Min-Te Chen, Ed Cook, Rixt de Jong, Kristine L. DeLong, Daniel A. Dixon, Alexey A. Ekaykin, Vasile Ersek, Helena L. Filipsson, Pierre Francus, Mandy B. Freund, Massimo Frezzotti, Narayan P. Gaire, Konrad Gajewski, Quansheng Ge, Hugues Goosse, Anastasia Gornostaeva, Martin Grosjean, Kazuho Horiuchi, Anne Hormes, Katrine Husum, Elisabeth Isaksson, Selvaraj Kandasamy, Kenji Kawamura, K. Halimeda Kilbourne, Nalan Ko{\c{c}}, Guillaume Leduc, Hans W. Linderholm, Andrew M. Lorrey, Vladimir Mikhalenko, P. Graham Mortyn, Hideaki Motoyama, Andrew D. Moy, Robert Mulvaney, Philipp M. Munz, David J. Nash, Hans Oerter, Thomas Opel, Anais J. Orsi, Dmitriy V. Ovchinnikov, Trevor J. Porter, Heidi A. Roop, Casey Saenger, Masaki Sano, David Sauchyn, Krystyna M. Saunders, Marit-Solveig Seidenkrantz, Mirko Severi, Xuemei Shao, Marie-Alexandrine Sicre, Michael Sigl, Kate Sinclair, Scott St. George, Jeannine-Marie St. Jacques, Meloth Thamban, Udya Kuwar Thapa, Elizabeth R. Thomas, Chris Turney, Ryu Uemura, Andre E. Viau, Diana O. Vladimirova, Eugene R. Wahl, James W.C. White, Zicheng Yu, Jens Zinke

Scientific Data Vol. 4 page： 170088 2017.7

State dependence of climatic instability over the past 720,000 years from Antarctic ice cores and climate modeling Reviewed

and Kenji Kawamura, Ayako Abe-Ouchi, Hideaki Motoyama, Yutaka Ageta, Shuji Aoki, Nobuhiko Azuma, Yoshiyuki Fujii, Koji Fujita, Shuji Fujita, Kotaro Fukui, Teruo Furukawa, Atsushi Furusaki, Kumiko Goto-Azuma, Ralf Greve, Motohiro Hirabayashi, Takeo Hondoh, Akira Hori, Shinichiro Horikawa, Kazuho Horiuchi, Makoto Igarashi, Yoshinori Iizuka, Takao Kameda, Hiroshi Kanda, Mika Kohno, Takayuki Kuramoto, Yuki Matsushi, Morihiro Miyahara, Takayuki Miyake, Atsushi Miyamoto, Yasuo Nagashima, Yoshiki Nakayama, Takakiyo Nakazawa, Fumio Nakazawa, Fumihiko Nishio, Ichio Obinata, Rumi Ohgaito, Akira Oka, Jun'ichi Okuno, Junichi Okuyama, Ikumi Oyabu, Fr{\'{e}}d{\'{e}}ric Parrenin, Frank Pattyn, Fuyuki Saito, Takashi Saito, Takeshi Saito, Toshimitsu Sakurai, Kimikazu Sasa, Hakime Seddik, Yasuyuki Shibata, Kunio Shinbori, Keisuke Suzuki, Toshitaka Suzuki, Akiyoshi Takahashi, Kunio Takahashi, Shuhei Takahashi, Morimasa Takata, Yoichi Tanaka, Ryu Uemura, Genta Watanabe, Okitsugu Watanabe, Tetsuhide Yamasaki, Kotaro Yokoyama, Masakazu Yoshimori, Takayasu Yoshimoto

Science Advances Vol. 3 ( 2 ) page： e1600446 2017.2

Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka Reviewed

F. PARRENIN, S. FUJITA, A. ABE-OUCHI, K. KAWAMURA, V. MASSON-DELMOTTE, H. MOTOYAMA, F. SAITO, M. SEVERI, B. STENNI, R. UEMURA, E. W. WOLFF

Journal of Glaciology Vol. 62 ( 236 ) page： 1037 2016.12

Physicochemical properties of bottom ice from Dome Fuji, inland East Antarctica Reviewed

Ohno Hiroshi, Iizuka Yoshinori, Hori Akira, Miyamoto Atsushi, Hirabayashi Motohiro, Miyake Takayuki, Kuramoto Takayuki, Fujita Shuji, Segawa Takahiro, Uemura Ryu, Sakurai Toshimitsu, Suzuki Toshitaka, Motoyama Hideaki

JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE Vol. 121 ( 7 ) page： 1230-1250 2016.7

Spatial distributions of soluble salts in surface snow of East Antarctica Reviewed

Yoshinori Iizuka, Hiroshi Ohno, Ryu Uemura, Toshitaka Suzuki, Ikumi Oyabu, Yu Hoshina, Kotaro Fukui, Motohiro Hirabayashi, Hideaki Motoyama

Tellus B Vol. 68 ( 0 ) 2016.7

Sulfur isotopic composition of surface snow along a latitudinal transect in East Antarctica Reviewed

Ryu Uemura, Kosuke Masaka, Kotaro Fukui, Yoshinori Iizuka, Motohiro Hirabayashi, Hideaki Motoyama

Geophys. Res. Lett. Vol. 43 ( 11 ) page： 5878 2016.6

Acquisition of isotopic composition for surface snow in East Antarctica and the links to climatic parameters Reviewed

Alexandra Touzeau, AmaÃ«lle Landais, Barbara Stenni, Ryu Uemura, Kotaro Fukui, Shuji Fujita, Sarah Guilbaud, Alexey Ekaykin, Mathieu Casado, Eugeni Barkan, Boaz Luz, Olivier Magand, Gr{\'{e}}gory Teste, Emmanuel Le~Meur, M{\'{e}}lanie Baroni, JoÃ«l Savarino, Ilann Bourgeois, Camille Risi

The Cryosphere Vol. 10 ( 2 ) page： 837 2016.4

Precise oxygen and hydrogen isotope determination in nanoliter quantities of speleothem inclusion water by cavity ring-down spectroscopic techniques Reviewed

Ryu Uemura, Masashi Nakamoto, Ryuji Asami, Satoru Mishima, Masakazu Gibo, Kosuke Masaka, Chen Jin-Ping, Chung Che Wu, Yu Wei Chang, Chuan Chou Shen

Geochimica et Cosmochimica Acta Vol. 172 page： 159-176 2016.1

Late Holocene coral reef environment recorded in Tridacnidae shells from archaeological sites in Okinawa-jima, subtropical southwestern Japan Reviewed

Asami R, Konishi M, Tanaka K, Uemura R, Furukawa M, Shinjo R

Island Arc Vol. 24 ( 1 ) page： 61-72 2015

Chemical compositions of sulfate and chloride salts over the last termination reconstructed from the Dome Fuji ice core, inland Antarctica Reviewed

Oyabu I, Iizuka Y, Uemura R, Miyake T, Hirabayashi M, Motoyama H, Sakurai T, Suzuki T, Hondoh T

Journal of Geophysical Research Atmospheres Vol. 119 ( 24 ) page： 14045-14058 2014

日本-スウェーデン共同南極トラバース2007/2008実施報告(1)企画立案・事前準備と科学研究成果の概要 Reviewed

藤田秀二, 福井幸太郎, 中澤文男, 榎本浩之, 杉山慎, 藤井理行, 藤田耕史, 古川晶雄, 原圭一郎, 保科優, 五十嵐誠, 飯塚芳徳, 伊村智, 本山秀明, スーディクスィルヴィアン, 植村立

南極資料 Vol. 58 ( 3 ) page： 352 - 392 2013.3

Direct linking of Greenland and Antarctic ice cores at the Toba eruption (74 ka BP) Reviewed

A. Svensson, M. Bigler, T. Blunier, H. B. Clausen, D. Dahl-Jensen, H. Fischer, S. Fujita, K. Goto-Azuma, S. J. Johnsen, K. Kawamura, S. Kipfstuhl, M. Kohno, F. Parrenin, T. Popp, S. O. Rasmussen, J. Schwander, I. Seierstad, M. Severi, J. P. Steffensen, R. Udisti, R. Uemura, P. Vallelonga, B. M. Vinther, A. Wegner, F. Wilhelms, and M. Winstrup

Climate of the Past Vol. 9 ( 2 ) page： 749-766 2013

Ranges of moisture-source temperature estimated from Antarctic ice cores stable isotope records over glacial-interglacial cycles Reviewed

Ryu Uemura, Valérie Masson-Delmotte, Jean Jouzel, Amaelle Landais, Hideaki Motoyama, Barbara Stenni

Climate of the Past Vol. 8 page： 1109-1125 2012.6

Factors controlling isotopic composition of precipitation on Okinawa Island, Japan: Implications for paleoclimate reconstruction in the East Asian Monsoon region Reviewed

Ryu Uemura, Nao Yonezawa, Kei Yoshimura, Ryuji Asami, Hisashi Kadena, Keita Yamada, Naohiro Yoshida

Journal of Hydrology Vol. 475 page： 314–322 2012

Sulphate-climate coupling over the past 300,000 years in inland Antarctica Reviewed

Yoshinori Iizuka, Ryu Uemura, Hideaki Motoyama, Toshitaka Suzuki, Takayuki Miyake, Motohiro Hirabayashi, and Takeo Hondoh

Nature Vol. 490 ( 7418 ) page： 81-84 2012

Process-evaluation of tropospheric humidity simulated by general circulation models using water vapor isotopologues: 1. Comparison between models and observations Reviewed

Camille Risi, David Noone , John Worden , Christian Frankenberg , Gabriele Stiller , Michael Kiefer , Bernd Funke , Kaley A. Walker , Peter Bernath , Matthias Schneider , Debra Wunch , Vanessa Sherlock , Nicholas Deutscher , David Griffith , Paul Wennberg , Sandrine Bony , Jeonghoon Lee , Derek Brown , Ryu Uemura , Christophe Sturm

Journal of Geophysical Research Vol. 117 ( 117 ) page： D05303, 26 PP 2012

A comparison of the present and last interglacial periods in six Antarctic ice cores Reviewed

V. Masson-Delmotte, D. Buiron, A. Ekaykin, M. Frezzotti, H. Gallée, J. Jouzel, G. Krinner, A. Landais, H. Motoyama, H. Oerter, K. Pol, D. Pollard, C. Ritz, E. Schlosser, L. C. Sime, H. Sodemann, B. Stenni, R. Uemura, and F. Vimeux

Climate of the Past Vol. 7 ( 7 ) page： 397-423 2011

Spatial and temporal variability of snow accumulation rate on the East Antarctic ice divide between Dome Fuji and EPICA DML Reviewed

S. Fujita, P. Holmlund, I. Andersson, I. Brown, H. Enomoto, Y. Fujii1, K. Fujita, K. Fukui, T. Furukawa, M. Hansson, K. Hara, Y. Hoshina, M. Igarashi, Y. Iizuka, S. Imura, S. Ingvander, T. Karlin, H. Motoyama1, F. Nakazawa, H. Oerter, L. E. Sjöberg, S. Sugiyama, S. Surdyk, J. Ström, R. Uemura, and F. Wilhelms

The Cryosphere, Vol. 5 ( 5 ) page： 1057-1081 2011

Triple isotope composition of oxygen in atmospheric water vapor Reviewed

Ryu Uemura, Eugeni Barkan, Osamu Abe, Boaz Luz

Geophysical Research Letters Vol. 37 ( 37 ) page： L04402 2010

Determining the ¹⁷O/¹⁶O ratio of water using a water-CO₂ equilibration method: application to glacial-interglacial changes in ¹⁷O-excess from the Dome Fuji ice core, Antarctica Reviewed

Ryu Uemura, Osamu Abe, Hideaki Motoyama

Geochimica et Cosmochimica Acta Vol. 74 ( 17 ) page： 4919-4936 2010

極域氷床深層コアの化学成分分析用試料の汚染除去前処理方法の検討 Reviewed

三宅隆之, 平林幹啓, 植村立, 東久美子, 本山秀明

南極資料 Vol. 53 ( 3 ) page： 259 - 282 2009.11

A study of the decontamination procedures used for chemical analysis of polar deep ice cores Reviewed

Miyake T, Hirabayashi M, Uemura R, Goto-Azuma K, Motoyama H.

Antarctic Record Vol. 53 ( 3 ) page： 259-282 2009

Evidence of Deuterium excess in Water Vapor as an Indicator of Ocean Surface Conditions Reviewed

R. Uemura, Y. Matsui, K. Yoshimura, H. Motoyama, and N. Yoshida

Journal of Geophysical Research Vol. 113 ( 113 ) page： D19114 2008

A review of Antarctic surface snow isotopic composition: observations, atmospheric circulation and isotopic modelling Reviewed

V. Masson-Delmotte, S. Hou, A. Ekaykin, J. Jouzel, A. Aristarain, R. T. Bernardo, D. Bromwich, O. Cattani, M. Delmotte, S. Falourd, M. Frezzotti, H. Gallée, L. Genoni, E. Isaksson, A. Landais, M.M. Helsen, G. Hoffmann, J. Lopez, V. Morgan, H. Motoyama, D. Noone, H. Oerter, J.R. Petit, A. Royer, R. Uemura, G.A. Schmidt, E. Schlosser, J.C. Simões, E. Steig, B. Stenni, M. Stievenard, M.R. van den Broeke, R.S.W. van de Wal, W.J. van de Berg, F. Vimeux, J.W.C. White

Journal of Climate Vol. 21 ( 13 ) page： 3359–3387-3387 2008

Estimation of net accumulation rate at a Patagonian glacier by ice core analyses using snow algae Reviewed

Koshima, S., Takeuchi, N., Uetake,J. ,Shiraiwa, T., Uemura, R., Yoshida, N., Matoba, S. and Godoi, M.A.

Global and Planetary Change Vol. 59 ( 59 ) page： 236-244 2007.10

Northern Hemisphere forcing of climatic cycles in Antarctica over the past 360,000 years Reviewed

K. Kawamura, F. Parrenin, L. Lisiecki, R. Uemura, F. Vimeux, J. P. Severinghaus, M. A. Hutterli, T. Nakazawa, S. Aoki, J. Jouzel, M. E. Raymo, K. Matsumoto, H. Nakata, H. Motoyama, S. Fujita, K. Goto-Azuma, Y. Fujii and O. Watanabe

Nature Vol. 448 ( 7156 ) page： 912-916 2007.8

Deuterium and oxygen-18 determination of microliter quantities of a water sample using an automated equilibrator Reviewed

Uemura Ryu, Matsui Yohei, Motoyama Hideaki, Yoshida Naohiro

RAPID COMMUNICATIONS IN MASS SPECTROMETRY Vol. 21 ( 11 ) page： 1783-1790 2007

水の安定同位体比による古気温推定の研究―極域氷床コアからの数千年スケールの気候変動の復元― Reviewed

植村　立

第四紀研究 Vol. 46 ( 2 ) page： 147 - 164 2007

1-D Ice flow modeling at EPICA Dome C and Dome Fuji, East Antarctica Reviewed

F. Parrenin, G. Dreyfus, G. Durand, S. Fujita, O. Gagliardini, F. Gillet, J. Jouzel, K. Kawamura, N. Lhomme, V. Masson-Delmotte, C. Ritz, J. Schwander, H. Shoji, R. Uemura, O. Watanabe, N. Yoshida

Climate of the Past Vol. 3 ( 2 ) page： 243-259 2007

Deuterium and Oxygen-18 Determination of Microliter Quantities of a Water Sample Using an Automated Equilibrator Reviewed

R. Uemura, Y. Matsui, H. Motoyama, N.Yoshida

Rapid communications in Mass Spectrometry ( 21 ) page： 1783-1790 2007

Isotopic fractionation of water during snow formation: Experimental evidence of kinetic effect Reviewed

R. Uemura, Y. Matsui, N.Yoshida, O. Abe, S. Mochizuki

Polar Meteorology and Glaciology ( 19 ) page： 1-14 2005

Botanical and geographical origin identification of industrial ethanol by stable isotope analyses of C, H, O

K. Ishida-Fujii, S. Goto, R. Uemura, K. Yamada, M. Sato and N. Yoshida

Bioscience, Biotechnology and Biochemistry Vol. 69 ( 11 ) page： 2193-2199 2005

An observation-based method for reconstructing ocean surface changes using a 340,000-year deuterium excess record from the Dome Fuji ice core, Antarctica Reviewed

R. Uemura, N.Yoshida, N. Kurita, M. Nakawo, O. Watanabe

Geophysical Research Letters Vol. 31 ( 13 ) page： L13216 2004

General tendencies of stable isotopes and major chemical constituents of the Dome Fuji Deep ice core Reviewed

O. Watanabe, K. Kamiyama, H. Motoyama, Y. Fujii, M. Igarashi, T. Furukawa, K Goto-Azuma, T. Saito, S.Kanamori, N. Kanamori, N. Yoshida, and R. Uemura

Memoirs of National Institute of Polar Research Special Issue ( 57 ) page： 1-24 2003

High net accumulation rates at Campo de Hielo Patagonico Sur, South America, revealed by analysis of a 45.97 m long ice core Reviewed

T. Shiraiwa, S. Kohshima, R. Uemura, N. Yoshida, S. Matoba, J. Uetake, M. A. Godoi

Annals of Glaciology ( 35 ) page： 84-90 2002

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