Office for Global Environmental Data Integration and Analytics

We provide support throughout the data life cycle from research planning to data acquisition, analysis, release, and data utilization. We operate the Global Environmental Database, GED, that collects, maintains, and widely disseminates data, and are also developing the Research Data Management System, RDMS, that enables research teams to manage data efficiently.


Support for data publication (metadata creation, DOI assignment, etc.), improvement of the Global Environmental Database, and development of the Research Data Management System
TSUKADA Yasuhiro
System management, maintenance, and operation, support for security and development
Data analysis methods, development of web applications for various databases, applications of machine learning methods, estimation of global CO2 uptake by land and oceans

Research Projects



Global Environmental Database - Three decadal advances towards the future - (in Japanese)
Shirai, T.
Transactions of Information Processing Society of Japan, Journal of Digital Practices (DP), 2(2), 1-8, 2435-6484 (2021)
Global terrestrial carbon fluxes of 1999-2019 estimated by upscaling eddy covariance data with a random forest
Zeng, J., Matsunaga, T., Tan, Z. H., Saigusa, N., Shirai, T., Tang, Y., Peng, S. & Fukuda, Y.
Nature Scientific Data 7 (313), 1-11 (2020)
Estimation of CH4 emissions from the East Siberian Arctic Shelf based on atmospheric observations aboard the R/V Mirai during fall cruises from 2012 to 2017
Tohjima, Y., Zeng, J., Shirai, T., Niwa, Y., Ishidoya, S., Taketani, F., Sasano, D., Kosugi, N., Kameyama, S., Takashima, H., Nara, H. & Morimoto, S.
Polar Science (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)
Generalization of Parameter Selection of SVM and LS-SVM for Regression
Zeng, J., Tan, Z. H., Matsunaga, T. & Shirai, T.
Machine Learning & Knowledge Extraction 1, 745-755 (2019)
Surface conductance for evapotranspiration of tropical forests: Calculations, variations, and controls
Tan, Z. H., Zaho, J. F., Wang, G. Z., Chen, M. P., Yang, L. Y., He, C. S., Coupe, N. R., Peng, S. S., Liu, X. X., da Rocha, H. R., Kosugi, Y., Hirano, T., Saleska, S. R., Goulden, M. L., Zeng, J., Ding, F. J., Gao, F. & Song, L.
Agricultural and Forest Meteorology 275, 317-328 (2019)
Long-term stimulatory warming effect on soil heterotrophic respiration in a cool-temperate broad-leaved deciduous forest in northern Japan
Teramoto, M., Liang, N., Ishida, S. & Zeng, J.
Journal of Geophysical Research: Biogeosciences (2018)
Technical note: Evaluation of three machine learning models for surface ocean CO2 mapping
Zeng, J., Matsunaga, T., Saigusa, N., Shirai, T., Nakaoka, S. & Hong, Z.
Ocean Science 13 (2), 303-313 (2017)
Using approximate Bayesian computation to infer photosynthesis model parameters
Zeng, J., Tan, Z. H. & Saigusa, N.
Chinese Journal of Plant Ecology (2017)
High-resolution data on the impact of warming on soil CO2 efflux from an Asian monsoon forest
Liang, N., Teramoto M., Takagi M. & Zeng, J.
Scientific Data 4, 170026 (2017)
On the ratio of intercellular to ambient CO2 (c i/c a) derived from ecosystem flux
Tan, Z. H., Wu, Z. X., Hughes, A. C., Schaefer, D., Zeng, J., Lan, G. Y., Yang, C., Tao, Z. L., Chen, B. Q., Tian, Y. H., Song, L. & Jatoi, M. T.
International Journal of Biometeorology 61, 2059-2071 (2017)
Optimum air temperature for tropical forest photosynthesis: mechanisms involved and implications for climate warming
Tan, Z. H., Zeng, J., Zhang, Y. J., Slot, M., Gamo, M., Hirano, T., Kosugi, Y., Rocha, H. R. D., Saleska, S. R., Goulden, M. L., Wofsy, S. C., Miller, S. D., Manzi, A. O., Nobre, A. D., Camargo, P. B. D. & Coupe, N. R.
Environmental Research Letters 12, 054022 (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)
A decadal inversion of CO2 using the Global Eulerian-Lagrangian Coupled Atmospheric model (GELCA): sensitivity to the ground-based observation network
Shirai, T., Ishizawa, M., Zhuravlev, R., Ganshin, A., Belikov, D., Saito, M., Oda, T., Valsala, V., Gomez-Pelaez, A. J., Langenfelds, R. & Maksyutov, S.
Tellus B: Chemical and Physical Meteorology 69:1, 1291158 (2017)
Seasonal variation of bromocarbons at Hateruma Island, Japan: implications for global sources
Yokouchi, Y., Saito, T., Zeng, J., Mukai, H. & Montzka, S.
Journal of Atmospheric Chemistry 74, 171-185 (2017)
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)
Inter-annual variability of summertime CO2 exchange in Northern Eurasia inferred from GOSAT XCO2
Ishizawa, M., Mabuchi, K., Shirai, T., Inoue, M., Morino, I., Uchino, O., Yoshida, Y., Maksyutov, S. & Belikov, D.
Environ. Res. Lett. 11 (2016)
Large XCH4 anomaly in summer 2013 over northeast Asia observed by GOSAT
Ishizawa, M., Uchino, O., Morino, I., Inoue, M., Yoshida, Y., Mabuchi, K., Shirai, T., Tohjima, Y., Maksyutov, S., Ohyama, H., Kawakami, S., Takizawa, A. & Belikov, D.
Atmos. Chem. Phys. 16, 9149-9161 (2016)
Top-down assessment of the Asian carbon budget since the mid 1990s
Thompson, R. L., Patra, P. K., Chevallier, F., Maksyutov, S., Law, R. M., Ziehn, T., van der Laan-Luijkx, I. T., Peters, W., Ganshin, A., Zhuravlev, R., Maki, T., Nakamura, T., Shirai, T., Ishizawa, M., Saeki, T., Machida, T., Poulter, B., Canadell, J. G. & Ciais, P.
Nature Communications 7, 10724 (2016)