"F. HASEBE,S. AOKI,S. MORIMOTO,Y. INAI,T. NAKAZAWA,S. SUGAWARA,C. IKEDA,H. HONDA,H. YAMAZAKI,HALIMURRAHMAN,N. KOMALA,F. A. PUTRI,A. BUDIYONO,M. SOEDJARWO,S. ISHIDOYA,S. TOYODA,T. SHIBATA,M. HAYASHI,N. EGUCHI,N. NISHI,M. FUJIWARA,S.-Y. OGINO,M. SHIOTANI,T. SUGIDACHI,D. A. BELIKOV,H. NGUYEN-THI","CUBE/Biak: Observations of dynamics and chemistry affecting the air on its ascent in the tropical lower stratosphere","SPARC 2018 General Assembly",,,,,,2018,Oct.
"奥村 優,中川麻悠子,丹 佑太,豊田 栄,山田桂太,吉田尚弘","酸素濃度の異なる微生物生態系における脂肪酸 δC 及び δH 解析","地球化学会年会",,,,,,2018,Sept.
"松井智哉,豊田栄,藤原健智,吉田尚弘","硝化菌による一酸化二窒素生成過程に海洋酸性化が及ぼす影響の解明","日本地球化学会年会2018",,,,,,2018,Sept.
"Ishidoya, S.,S. Sugawara,Y. Inai,S. Morimoto,H. Honda,C. Ikeda,G. Hashida,T. Machida,Y. Tomikawa,S. Toyoda,D. Goto,S. Aoki,T. Nakazawa","Gravitational separation of the stratospheric air over Syowa, Antarctica and its connection with meteorological fields",,"Atmos. Sci. Lett.",,"  2018",,,2018,Sept.
"Sarah Eggleston,Sakae Toyoda,Heiko Moossen,Christina Biasi,Longfei Yu,Naohiro Yoshida,Paul Brewer,Joachim Mohn","Development of international N2O reference materials for site preference measurements","Jahrestagung der Arbeitsgemeinschaft Stabile Isotope (ASI 2018)",,,,,,2018,Sept.
"S. Toyoda,T. Machida,Y. Tohjima,M. Sasakawa,S. Morimoto,K. Ishijima,N. Yoshida","Long-term trend of tropospheric N2O isotopocule ratios in the Northern Hemisphere","2018 Joint 14th iCACGP Quadrennial Symposium/15th IGAC Science Conference",,,,,,2018,Sept.
"徐 佳欣,Sakae Toyoda,keita Yamada,NAOHIRO YOSHIDA","Development of on-line analytical method for hydrogen stable isotope ratio in H2 from anthropogenic sources","日本地球化学会年会2018",,,,,,2018,Sept.
"小林香音,服部祥平,松木篤,石野咲子,鈴木希実,亀崎和輝,豊田栄,吉田尚弘","能登半島における大気硫酸エアロゾルの三酸素同位体組成の観測","日本地球化学会年会2018",,,,,,2018,Sept.
"Fu-Jun Yue,Si-Liang Li,Cong-Qiang Liu,Khan M.G. Mostofa,Naohiro Yoshida,Sakae Toyoda,Shohei Hattori,Xiao-Long Liu,Shi-Lu Wang","The spatial variation of nitrogen cycle in subtropical stratified dam lake in SW China, elucidated by nitrous oxide isotopomer and nitrate isotopes,",,"Inland Waters",,"Vol. 8",,"pp. ?186-195",2018,Aug.
"Ostrom N. E.,Gandhi H.,Coplen T. B.,Toyoda S.,B?hlke J. K.,Brand W. A.,Casciotti K. L.,Dyckmans J.,Giesemann A.,Mohn J.,Well R.,Yu L.,Yoshida N.","Preliminary assessment of stable nitrogen and oxygen isotopic composition of USGS51 and USGS52 nitrous oxide reference gases and perspectives on calibration needs.",,"Rapid Commun. Mass Spectrom.",,"Vol. 32",,"pp. 1207-1214",2018,Aug.
"Hyodo Ayumi,Malghani Saadat,Zhou Yong,Mushinski Ryan M.,Toyoda Sakae,Yoshida Naohiro,Boutton Thomas W,West Jason B","Does biochar amendment reduce N2O emissions by stimulating the last step of denitrification? - A study using position-specific N isotopic composition","IsoEcol2018",,,,,,2018,July
"F. Hasebe,S. Aoki,S. Morimoto,Y. Inai,T. Nakazawa,S. Sugawara,C. Ikeda,H. Honda,H. Yamazaki,N. Komala,F. A. Putri,A. Budiyono,M. Soedjarwo,S. Ishidoya,S. Toyoda,T. Shibata,M. Hayashi,N. Eguchi,N. Nishi,M. Fujiwara,S.-Y. Ogino,M. Shiotani,T.: Sugidachi","Coordinated Upper-troposphere-to-stratosphere Balloon Experiment in Biak (CUBE/Biak)",,"B. Am. Meteorol. Soc.",,"Vol. 99","Number 6","p. 1213-1230",2018,June
"Naohiro YOSHIDA,Sakae TOYODA,Osamu YOSHIDA,Shuichi WATANABE","Isotopomer and Isotopologue Abundance of Nitrous Oxide in Mid and Deep Oceans for its Source and Sink Indicator","Asia Oceania Geosciences Society2018（AOGS2018)",,,,,,2018,June
"Nathaniel E. Ostrom,Hasand Gandhi,Tyler B. Coplen,Sakae Toyoda,J.K. Boehlke,Wili A. Brand,Karen L. Casciotti,Jens Dyckmans,Anette Giesemann,Joachim Mohn,Reinhard Well,Longfei Yu,Naohiro Yoshida","Preliminary assessment of stable nitrogen and oxygen isotopic composition of USGS51 and USGS52 nitrous oxide reference gases and perspectives on calibration needsJournal: Rapid Communications in Mass Spectrometry",,"Rapid Commun. Mass Spectrom.",,"Vol. 32",,"  1207-1214",2018,May
"Sarah S. Eggleston,Sakae Toyoda,Heiko Moossen,Christina Biasi,Tracey Jacksier,Longfei Yu,Naohiro Yoshida,Paul Brewer,Joachim Mohn","Development of new N2O reference materials for d15N, d18O and 15N","EGU General Assembly 2018",,,,,,2018,Apr.
"Mayuko Nakagawa,Keita Yamada,Sakae Toyoda,Kazuyuki Kita,Yasuhito Igarashi,Shingo Komatsu,Kentaro Yamada,Naohiro Yoshida","Characterization of hydrocarbons in aerosols and investigation of biogenic sources as a carrier of radiocesium isotopes",,"GEOCHEMICAL JOURNAL",,"Vol. 52","No. 2","p. 163-172",2018,Mar.
"Sakae Toyoda,Osamu Yoshida,Hiroaki Yamagishi,Ayako Fujii,Naohiro Yoshida,Syuichi Watanabe","Origin of nitrous oxide dissolved in deep ocean water deduced from concentration and isotopocule analyses","9th International Symposium on Isotopomers (ISI2018)",,,,,,2018,Mar.
"Takeshi Kinase,Kazuyuki Kita,Yasuhito Igarashi,Kouji Adachi,Kazuhiko Ninomiya,Atsushi Shinohara,Hiroshi Okochi,Hiroko Ogata,Masahide Ishizuka,Sakae Toyoda,keita Yamada,Naohiro Yoshida,Yuji Zaizen,Masao Mikami,Hiroyuki Demizu,Yuichi Onda","The seasonal variations of atmospheric 134,137Cs activity and possible host particles for their resuspension in the contaminated areas of Tsushima and Yamakiya, Fukushima, Japan",,"Progress in Earth and Planetary Science",,"Vol. 5","No. 1","p. 12",2018,Feb.
"S. Sugawara,S. Ishidoya,S. Aoki,S. Morimoto,T. Nakazawa,S. Toyoda,Y. Inai,F. Hasebe,C. Ikeda,H. Honda,D. Goto,F. A. Putri","Age and gravitational separation of the stratospheric air over Indonesia",,"Atmos. Chem. Phys.",,"Vol. 18",,"pp. 1819-1833",2018,Feb.
"Kushi Kudo,keita Yamada,Sakae Toyoda,Naohiro Yoshida,Daisuke Sasano,Naohiro Kosugi,Masao Ishii,Hisayuki Yoshikawa,Akihiko Murata,Hiroshi Uchida,Shigeto Nishino","Spatial distribution of dissolved methane and its source in the western Arctic Ocean",,"Journal of Oceanography",,"Vol. 74",,"p. 305-317",2018,Jan.
"Sakae Toyoda,Naohiro Yoshida,Shinji Morimoto,Shuji Aoki,Takakiyo Nakazawa,Satoshi Sugawara,Shigeyuki Ishidoya,Mitsuo Uematsu,Yoichi Inai,Fumio Hasebe,Chusaku Ikeda,Hideyuki Honda,Kentaro Ishijima","Vertical distributions of N2O isotopocules in the equatorial stratosphere",,"Atmospheric Chemistry and Physics",,"Vol. 18",,"pp. 833-844",2018,Jan.