The Biogeochemical Cycle Observation Section develops observation and measurement techniques to understand biogeochemical cycles of chemical substances, including greenhouse gases, at various spatiotemporal scales, and applies them to analyze the interaction between biochemical cycles and climate change.
Biogeochemical Cycle Observation Section
Staff
Results
Publications
Reviewing the History of Passenger Aircraft‒based Observations of Atmospheric Trace Gases (in Japanese)
Umezawa, T., Nakazawa, T., & Aoki S.
Tenki, 71(3) (2024)
Methane emissions decreased in fossil fuel exploitation and sustainably increased in microbial source sectors during 1990–2020
Chandra, N., Patra, P. K., Fujita, R., Höglund-Isaksson, L., Umezawa, T., Goto, D., Morimoto S., Vaughn, B. H. & Röckmann, T.
Communications Earth & Environment (2024)
Radiocarbon ages of plant remains in massive ground ice and underlying sediments of the barrow permafrost tunnel, Alaska
Iwahana, G., Uchida, M., Horiuchi, K., Deming, J., Eicken, H., Ohno, H., Mantoku, K., Kobayashi, T., & Saito, K.
Radiocarbon, 1-13, (2024)
Reconstructing high-resolution in-situ vertical carbon dioxide profiles in the sparsely monitored Asian monsoon region
Vogel, B., Volk, C. M., Wintel, J., Lauther, V., Müller, R., Patra, P. K., Riese, M., Terao, Y., & Stroh, F.
Communications Earth & Environment, 4: 72 (2023)
Update on the GOSAT TANSO–FTS SWIR Level 2 retrieval algorithm
Someya, Y., Yoshida, Y., Ohyama, H., Nomura, S., Kamei, A., Morino, I., Mukai, H., Matsunaga, T., Laughner, J. L., Velazco, V. A., Herkommer, B., Té, Y., Sha, M. K., Kivi, R., Zhou, M., Oh, Y. S., Deutscher, N. M., & Griffith, D. W. T.
Atmospheric Measurement Techniques, 16, 1477–1501 (2023)
Bottom-up Evaluation of the Methane Budget in Asia and its Subregions
Ito, A., Patra, P. K., & Umezawa, T.
Global Biogeochemical Cycles, 37, e2023GB007723 (2023)
Near-real-time estimation of fossil fuel CO2 emissions from China based on atmospheric observations on Hateruma and Yonaguni Islands, Japan
Tohjima, Y., Niwa, Y., Patra, P. K., Mukai, H., Machida, T., Sasakawa, M., Tsuboi, K., Saito, K., & Ito, A.
Progress in Earth and Planetary Science, 10:10 (2023)
Source apportionment of black carbon aerosols by isotopes (14C and 13C) and Bayesian modeling from two remote islands in east Asian outflow region
Uchida, M., Mantoku, K., Kumata, H., Kaneyasu, N., Handa, D. Arakaki, T., Kobayashi, T., Hatakeyama, S., Shibata, Y., & Kawamura, K.
Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms, 538C: 64-74 (2023)
Ultra small mass AMS 14C sample preparation and analyses at NIES-TERRA AMS facility
Uchida, M., Mantoku, K., Kobayashi, T., Kawamura, K., & Shibata, Y.
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 536, 144-153 (2023)
Issues of Atmospheric Chemistry in the Stratosphere and Mesosphere (in Japanese)
江口菜穂，山下陽介，秋吉英治，酒井哲，長濱智生，冨川喜弘，中島英彰，杉田考史，坂崎貴俊，斉藤拓也，水野亮
Archives of Atmospheric Chemistry Research, 48, 048A01 (2023)
Atmospheric Observations Suggest Methane Emissions in North-east China Growing with Natural Gas Use
Wang, F., Maksyutov, S., Janardanan, R., Tsuruta, A., Ito, A., Morino, I., Yoshida, Y., Tohjima, Y., Kaiser, J. W., Lan, X., Zhang, Y., Mammarella, I., Lavric, J. V., & Matsunaga, T.
Scientific Reports, 12 (2022)
Greenhouse gases and ozone depleting substances (in Japanese)
梅澤拓，丹羽洋介，斉藤拓也，齋藤尚子，豊田栄
Archives of Atmospheric Chemistry Research, 47, 047A02 (2022)
Towards reconstructing the Arctic atmospheric methane history over the 20th century: measurement and modelling results for the North Greenland Ice Core Project firn
Umezawa, T., Sugawara, S., Kawamura, K., Oyabu, I., Andrews, S. J., Saito, T., Aoki, S., & Nakazawa, T.
Atmos. Chem. Phys., 22, 6899–6917 (2022)
Relation of leaf terpene contents to terpene emission profiles in Japanese cedar (Cryptomeria japonica)
Saito, T., Kusumoto, N., & Hiura, T.
Ecological Research (2022)
Did Atmospheric CO2 and CH4 Observation at Yonagunijima Detect Fossil-Fuel CO2 Reduction due to COVID-19 Lockdown?
Tohjima, Y., Niwa, Y., Tsuboi, K., & Saito, K.
Journal of the Meteorological Society of Japan, 100(2), 437-444, (2022)
Surface displacement induced by seasonal ground thaw, measured by synthetic aperture radar in the Daisetsu Mountains, Japan. (in Japanese)
Future perspectives and scopes of earth observations (in Japanese)
Sato, K., Ikeda, K., Terao, Y., Tamashita, Y., Machida, T., & Tanimoto, H.
Measurement report: Regional characteristics of seasonal and long-term variations in greenhouse gases at Nainital, India, and Comilla, Bangladesh
Nomura, S., Naja, M., M. Ahmed, K., Mukai, H., Terao, Y., Machida, T., Sasakawa, M., & Patra, P. K.
Atmos. Chem. Phys., 21, 16427-16452 (2021)
Atmospheric observations for greenhouse gases and related constituents in the urban areas(in Japanese)
Terao, Y., & Ishidoya, S.
Archives of Atmospheric Chemistry Research, 45 (045A01) (2021)
Anthropogenic CO2 emissions changes in an urban area of Tokyo, Japan, due to the COVID-19 pandemic: A case study during the state of emergency in April–May 2020
Sugawara, H., Ishidoya, S., Terao, Y., Takane, Y., Kikegawa, Y., & Nakajima, K.
Geophysical Research Letters, 48, e2021GL092600 (2021)
Soil carbon flux research in the Asian region: Review and future perspectives
Sha, L., Teramoto, M., Noh, N., Hashimoto, S., Yang, M., Sanwangsri M., & Liang, N.
Journal of Agricultural Meteorology, 77(1)：24-51 (2021)
Composition of firn air at the North Greenland Ice Core Project (NGRIP) site
Kawamura, K., Umezawa, T., Sugawara, S., Ishidoya, S., Ishijima, K., Saito, T., Oyabu, I., Murayama, S., Morimoto, S., Aoki, S., & Nakazawa, T.
Polar Data Journal, 5, 89–98 (2021)
Projections of surface air temperature required to sustain permafrost and importance of adaptation to climate change in the Daisetsu Mountains, Japan
Yokohata, T., Iwahana, G., Sone, T., Saito, K., Ishizaki, N. N., Kubo, T., Oguma, H., & Uchida, M.
Scientific Reports, 11, 15518 (2021)
Estimation of fire-induced carbon emissions from Equatorial Asia in 2015 using in situ aircraft and ship observations
Niwa, Y., Sawa, Y., Nara, H., Machida, T., Matsueda, H., Umezawa, T., Ito, A., Nakaoka, S., Tanimoto, H., & Tohjima, Y.
Atmos. Chem. Phys., 21, 9455–9473 (2021)
Diversification of terpenoid emissions proposes a geographic structure based on climate and pathogen composition in Japanese cedar
Hiura, T., Yoshioka, H., Matsunaga, S. N., Saito, T., Kohyama, T. I., Kusumoto, N., Uchiyama, K., Suyama, Y., & Tsumura, Y.
Scientific Reports, 11: 8307 (2021)
A decline in emissions of CFC-11 and related chemicals from eastern China
Park, S., Western, L.M., Saito, T., Redington, A.L., Henne, S., Fang, X., Prinn, R.G., Manning, A.J., Montzka, S.A., Fraser, P.J., Ganesan, A.L., Harth, C.M., Kim, J., Krummel, P.B., Liang, Q., Mühle, J., O'Doherty, S., Park, H., Park, M. K., Reimann, S., Salameh, P.K., Weiss, R.F., & Rigby, M.
Nature (2021)
Estimation of PM2.5 emission sources in the Tokyo Metropolitan area by simultaneous measurements of particle elements and oxidative ratio in air
Kaneyasu, N., Ishidoya, S., Terao, Y., Mizuno, Y. & Sugawara, H.
ACS Earth and Space Chemistry 4, 297-304 (2020)
O2: CO2 exchange ratio for net turbulent flux observed in an urban area of Tokyo, Japan and its application to an evaluation of anthropogenic CO2 emissions
Ishidoya, S., Sugawara, H., Terao, Y., Kaneyasu, N., Aoki, N., Tsuboi, K. & Kondo, H.
Atmospheric Chemistry and Physics 20, 5293-5308 (2020)
Enhanced understory carbon flux components and robustness of net CO2 exchange after thinning in a larch forest in central Japan
Teramoto, M., Liang, N., Takahashi, Y., Zeng, J., Saigusa, N., Ide, R. & Zhao X.
Agricultural and Forest Meteorology 274, 106-117 (2019)
Methane budget of East Asia, 1990-2015: A bottom-up evaluation
Ito, A., Tohjima, Y., Saito, T., Umezawa, T., Hajima, T., Hirata, R., Saito, M. & Terao, Y.
Science of the Total Environment 676, 40-52 (2019)
Short-term effects of high CO2 accelerate photosynthetic induction in Populus koreana × trichocarpa with always-open stomata regardless of phenotypic changes in high CO2 growth conditions
Tomimatsu, H., Sakata, T., Fukayama, H. & Tang, Y.
Tree Physiology, tpy078 (2018)
Methane and nitrous oxide emissions from conventional and modified rice cultivation systems in South India
Oo, A. Z., Sudo, S., Inubushi, K., Mano, M., Yamamoto, A., Ono, K., Osawa, T., Hayashida, S., Patra, P. K., Terao, Y., Elayakumar, P., Vanitha, K., Umamageswari, C., Jothimani, P. & Ravi, V.
Agriculture, Ecosystems and Environment 252, 148-158 (2018)
Emission factors of CO2, CO and CH4 from Sumatran peatland fires in 2013 based on shipboard measurements
Nara, H., Tanimoto, H., Tohjima, Y., Mukai, H., Nojiri, Y. & Machida, T.
Tellus B 69, 1399047 (2017)
Long-term chamber measurements reveal strong impacts of soil temperature on seasonal and inter-annual variation in understory CO2 fluxes in a Japanese larch (Larix kaempferi Sarg.) forest
Teramoto, M., Liang, N., Zeng, J., Saigusa, N. & Takahashi, Y.
Agricultural and Forest Meteorology 247, 194-206 (2017)
Six years of atmospheric CO2 observations at Mt. Fuji recorded with a battery-powered measurement system
Nomura, S., Mukai, H., Terao, Y., Machida, T. & Nojiri, Y.
Atmos. Meas. Tech. 10, 667-680, (2017)
Exogenous N addition enhances the responses of gross primary productivity to individual precipitation events in a temperate grassland
Guo, Q., Hu, Z. M., Yu, G. R., Sun, X. M., Li, L. H., Liang, N. & Bai, W. M.
Scientific Reports 6:26901 (2016)
Responses of gross primary productivity to different sizes of precipitation events in a temperate grassland ecosystem in Inner Mongolia, China
Guo, Q., Li, S. G., Hu, Z. M., Zhao, W., Yu, G. R., Sun, X. M., Li, L., Liang, N. & Bai, W.
J. Arid Land 8(1): 36-46 (2016)
Sustained acceleration of soil carbon decomposition observed in a 6-year warming experiment in a warm-temperate forest in southern Japan
Teramoto, M., Liang, N., Takagi, M., Zeng, J. & Grace, J.
Sci. Rep. 6, 35563 (2016)
Heterotrophic respiration does not acclimate to continuous warming in a subtropical forest
Wu, C., Liang, N., Sha, L., Xu, X., Zhang, Y., Lu, H., Song, L., Song, Q. & Xie, Y.
Scientific Reports 6:21561 (2016)