Articles

• Friedlingstein, P., M. W. Jones, M. O'Sullivan, R. M. Andrew, D. C. E. Bakker, J. Hauck, C. Le Quere, G. P. Peters, W. Peters, J. Pongratz, S. Sitch, J. G. Canadell, P. Ciais, R. B. Jackson, S. R. Alin, P. Anthoni, N. R. Bates, M. Becker, N. Bellouin, L. Bopp, T. T. T. Chau, F. Chevallier, L. P. Chini, M. Cronin, K. I. Currie, B. Decharme, L. M. Djeutchouang, X. Dou, W. Evans, R. A. Feely, L. Feng, T. Gasser, D. Gilfillan, T. Gkritzalis, G. Grassi, L. Gregor, M. Gruber, O. Gurses, I. Harris, R. A. Houghton, G. C. Hurtt, Y. Iida, T. Ilyina, I. T. Luijkx, A. Jain, S. D. Jones, E. Kato, D. Kennedy, K. Klein Goldewijk, J. Knauer, J. I. Korsbakken, A. Kortzinger, P. Landschutzer, S. K. Lauvset, N. Lefevre, S. Lienert, J. Liu, G. Marland, P. C. McGuire, J. R. Melton, D. R. Munro, J. E. M. S. Nabel, S.-I. Nakaoka, Y. Niwa, T. Ono, D. Pierrot, B. Poulter, G. Rehder, L. Resplandy, E. Robertson, C. Rodenbeck, T. M. Rosan, J. Schwinger, C. Schwingshackl, R. Seferian, A. J. Sutton, C. Sweeney, T. Tanhua, P. P. Tans, H. Tian, B. Tilbrook, F. Tubiello, G. R. van der Werf, N. Vuichard, C. Wada, R. Wanninkhof, A. J. Watson, D. Willis, A. J. Wiltshire, W. Yuan, C. Yue, X. Yue, S. Zaehle, and J. Zeng, J. (2022), Global Carbon Budget 2021, Earth Syst. Sci. Data, 14, 1917-2005, doi:10.5194/essd-14-1917-2022.

• Niwa, Y., Y. Sawa, H. Nara, T. Machida, H. Matsueda, T. Umezawa, A. Ito, S. Nakaoka, H. Tanimoto, and Y. Tohjima (2021), Estimation of fire-induced carbon emission from Equatorial Asia in 2015 by using in situ aircraft and ship observations, Atmos. Chem. Phys., 21, 9455-9473, doi:10.5194/acp-21-9455-2021.
• Muller, A., H. Tanimoto, T. Sugita, T. Machida, S. Nakaoka, P. K. Patra, J. Laughner, and D. Crisp (2021), New approach to evaluate satellite derived XCO₂ over oceans by integrating ship and aircraft observations, Atmos. Chem. Phys., doi:10.5194/acp-21-8255-2021.
• Bisht, J. S. H., T. Machida, N. Chandra, K. Tsuboi, P. K. Patra, T. Umezawa, Y. Niwa, Y. Sawa, S. Morimoto, T. Nakazawa, N. Saitoh, and M. Takigawa (2021), Seasonal variations of SF₆, CO₂, CH₄ and N₂O in the UT/LS region due to emissions, transport and chemistry, J. Geophys. Res. Atmos., doi:10.1029/2020JD033541.
• Maksyutov, S., Oda, T., Saito, M., Janardanan, R., Belikov, D., Kaiser, J. W., Zhuravlev, R., Ganshin, A., Valsala, V. K., Andrews, A., Chmura, L., Dlugokencky, E., Haszpra, L., Langenfelds, R. L., Machida, T., Nakazawa, T., Ramonet, M., Sweeney, C., and Worthy, D. (2021), Technical note: A high-resolution inverse modelling technique for estimating surface CO₂ fluxes based on the NIES-TM-FLEXPART coupled transport model and its adjoint, Atmos. Chem. Phys., 21, 1245-1266, doi:10.5194/acp-21-1245-2021.

• Lin, X., B. M. Rogers, C. Sweeney, F. Chevallier, M. Arshinov, E. Dlugokencky, T. Machida, M. Sasakawa, P. Tans, and G. Keppel-Aleksa (2020), Siberian and temperate ecosystems shape Northern Hemisphere atmospheric CO₂ seasonal amplification, PNAS, 2020 117 (35) 21079-21087, doi:10.1073/pnas.1914135117.
• Umezawa, T., H. Matsueda, T. Oda, K. Higuchi, Y. Sawa, T. Machida, Y. Niwa, and S. Maksyutov (2020), Statistical characterization of urban CO₂ emission signals observed by commercial airliner measurements, Scientific Reports, 10, 7963, doi:10.1038/s41598-020-64769-9.

Other Contributions

• Friedlingstein, P., M. O'Sullivan, M. W. Jones, R. M. Andrew, J. Hauck, A. Olsen, G. P. Peters, W. Peters, J. Pongratz, S. Sitch, C. Le Quere, J. G. Canadell, P. Ciais, R. B. Jackson, S. Alin, L. E. O. C. Aragao, A. Arneth, V. Arora, N. R. Bates, M. Becker, A. Benoit-Cattin, H. C. Bittig, L. Bopp, S. Bultan, N. Chandra, F. Chevallier, L. P. Chini, W. Evans, L. Florentie, P. M. Forster, T. Gasser, M. Gehlen, D. Gilfillan, T. Gkritzalis, L. Gregor, N. Gruber, I. Harris, K. Hartung, V. Haverd, R. A. Houghton, T. Ilyina, A. K. Jain, E. Joetzjer, K. Kadono, E. Kato, V. Kitidis, J. I. Korsbakken, P. Landschutzer, N. Lefevre, A. Lenton, S. Lienert, Z. Liu, D. Lombardozzi, G. Marland, N. Metzl, D. R. Munro, J. E. M. S. Nabel, S.-I. Nakaoka, Y. Niwa, K. O'Brien, T. Ono, P. I. Palmer, D. Pierrot, B. Poulter, L. Resplandy, E. Robertson, C. Rodenbeck, J. Schwinger, R. Seferian, I. Skjelvan, A. J. P. Smith, A. J. Sutton, T. Tanhua, P. P. Tans, H. Tian, B. Tilbrook, G. van der Werf, N. Vuichard, A. P. Walker, R. Wanninkhof, A. J. Watson, D. Willis, A. J. Wiltshire, W. Yuan, X. Yue, and S. Zaehle (2020), Global Carbon Budget 2020, Earth Syst. Sci. Data, 12, 3269-3340, doi:10.5194/essd-12-3269-2020.

• Matsueda, H., R. Buchholz, K. Ishijima, H. Worden, D. Hammerling, and T. Machida (2019), Interannual Variation of Upper Tropospheric CO over the Western Pacific Linked with Indonesian Fires, SOLA, 15, 205-210, doi:10.2151/sola.2019-037.
• Ouchi, M., Y. Matsumi, T. Nakayama, K. Shimizu, T. Sawada, T. Machida, H. Matsueda, Y. Sawa, I. Morino, O. Uchino, T. Tanaka, and R. Imasu (2019), Development of a balloon-borne instrument for CO₂ vertical profile observations in the troposphere, Atmos. Meas. Tech., 12, 5639-5653, doi:10.5194/amt-12-5639-2019.
• Inai, Y., R. Fujita, T. Machida, H. Matsueda, Y. Sawa, K. Tsuboi, K. Katsumata, S. Morimoto, S. Aoki, and T. Nakazawa (2019), Seasonal characteristics of chemical and dynamical transport into the extratropical upper troposphere and lower stratosphere, Atmos. Chem. Phys., 19, 7073-7103, doi:10.5194/acp-19-7073-2019.

Other Contributions

• Friedlingstein, P., M. W. Jones, M. O'Sullivan, R. M. Andrew, J. Hauck, G. P. Peters, W. Peters, J. Pongratz, S. Sitch, C. Le Quere, D. C. E. Bakker, J. G. Canadell, P. Ciais, R. B. Jackson, P. Anthoni, L. Barbero, A. Bastos, V. Bastrikov, M. Becker, L. Bopp, E. Buitenhuis, N. Chandra, F. Chevallier, L. P. Chini, K. I. Currie, R. A. Feely, M. Gehlen, D. Gilfillan, T. Gkritzalis, D. S. Goll, N. Gruber, S. Gutekunst, I. Harris, V. Haverd, R. A. Houghton, G. Hurtt, T. Ilyina, A. K. Jain, E. Joetzjer, J. O. Kaplan, E. Kato, K. Klein Goldewijk, J. I. Korsbakken, P. Landschutzer, S. K. Lauvset, N. Lefevre, A. Lenton, S. Lienert, D. Lombardozzi, G. Marland, P. C. McGuire, J. R. Melton, N. Metzl, D. R. Munro, J. E. M. S. Nabel, S.-I. Nakaoka, C. Neill, A. M. Omar, T. Ono, A. Peregon, D. Pierrot, B. Poulter, G. Rehder, L. Resplandy, E. Robertson, C. Rodenbeck, R. Seferian, J. Schwinger, N. Smith, P. P. Tans, H. Tian, B. Tilbrook, F. N. Tubiello, G. R. van der Werf, A. J. Wiltshire, and S. Zaehle (2019), Global Carbon Budget 2019, Earth Syst. Sci. Data, 11, 1783-1838, doi:10.5194/essd-11-1783-2019.

• Umezawa, T., H. Matsueda, Y. Sawa, Y. Niwa, T. Machida, and L. Zhou (2018), Seasonal evaluation of tropospheric CO₂ over the Asia-Pacific region observed by the CONTRAIL commercial airliner measurements, Atmos. Chem. Phys., 18, 14851-14866, doi:10.5194/acp-18-14851-2018.

Other Contributions

• Sugawara, S., S. Ishidoya, S. Aoki, S. Morimoto, T. Nakazawa, S. Toyoda, Y. Inai, F. Hasebe, C. Ikeda, H. Honda, D. Goto, and F. A. Putri (2018), Age and gravitational separation of the stratospheric air over Indonesia, Atmos. Chem. Phys., 18, 1819-1833, doi:10.5194/acp-18-1819-2018.

• Saitoh, N., S. Kimoto, R. Sugimura, R. Imasu, K. Shiomi, A. Kuze, Y. Niwa, T. Machida, Y. Sawa, and H. Matsueda (2017), Bias assessment of lower and middle tropospheric CO₂ concentrations of GOSAT/TANSO-FTS TIR Version 1 product, Atmos. Meas. Tech., 10, 3877-3892, doi.org/10.5194/amt-10-3877-2017.
• Niwa, Y., H. Tomita, M. Satoh, R. Imasu, Y. Sawa, K. Tsuboi, H. Matsueda, T. Machida, M. Sasakawa, B. Belan, and N. Saigusa (2017), A 4D-Var inversion system based on the icosahedral grid model (NICAM-TM 4D-Var v1.0) ? Part 1: Offline forward and adjoint transport models, Geosci. Model Dev., 10, 1157-1174, doi:10.5194/gmd-10-1157-2017.
• Nomura, S., H. Mukai, Y. Terao, T. Machida and Y. Nojiri (2017), Six years of atmospheric CO₂ observations at Mt. Fuji recorded with a battery-powered measurement system, Atmos. Meas. Tech., 10, 667-680, doi:10.5194/amt-10-667-2017.

Other Contributions

• Diallo, M., B. Legras, E. Ray, A. Engel, and J. A. Anel (2017), Global distribution of CO₂ in the upper troposphere and stratosphere, Atmos. Chem. Phys., 17, 3861-3878, doi:10.5194/acp-17-3861-2017.
• Shirai, T., M. Ishizawa, R. Zhuravlev, A. Ganshin, D. Belikov, M. Saito, T. Oda, V. Valsala, A. J. Gomez-Pelaez, R. Langenfelds, and S. Maksyutov (2017), A decadal inversion of CO₂ using the Global Eulerian-Lagrangian Coupled Atmospheric model (GELCA): sensitivity to the ground-based observation network, Tellus B: Chemical and Physical Meteorology, 69:1, 1291158, doi:10.1080/16000889.2017.1291158.

• Saitoh, N., S. Kimoto, R. Sugimura, R. Imasu, S. Kawakami, K. Shiomi, A. Kuze, T. Machida, Y. Sawa, and H. Matsueda (2016), Algorithm update of the GOSAT/TANSO-FTS thermal infrared CO₂ product (version 1) and validation of the UTLS CO₂ data using CONTRAIL measurements, Atmos. Meas. Tech., 9, 2119-2134, doi:10.5194/amt-9-2119-2016.
• Jiang, F., J. Chen, L. Zhou, W. Ju, H. Zhang, T. Machida, P. Ciais, W. Peters, H. Wang, B. Chen, L. Liu, C. Zhang, H. Matsueda and Y. Sawa (2016), A comprehensive estimate of recent carbon sinks in China using both top-down and bottom-up approaches, Scientific Reports, 6, doi:10.1038/srep22130.
• Thompson, R., P. Patra, F. Chevallier, S. Maksyutov, R. Law, T. Ziehn, I. van der Laan-Luijkx, W. Peters, A. Ganshin, R. Zhuravlev, T. Maki, T. Nakamura, T. Shirai, M. Ishizawa, T. Saeki, T. Machida, B. Poulter, J. Canadell and P. Ciais (2016), Top-down assessment of the Asian carbon budget since the mid 1990s, Nature Communications, 7, doi:10.1038/ncomms10724.
• Inoue, M., I. Morino, O. Uchino, T. Nakatsuru, Y. Yoshida, T. Yokota, D. Wunch, P. O. Wennberg, C. M. Roehl, D. W. T. Griffith, V. A. Velazco, N. M. Deutscher, T. Warneke, J. Notholt, J. Robinson, V. Sherlock, F. Hase, T. Blumenstock, M. Rettinger, R. Sussmann, E. Kyro, R. Kivi, K. Shiomi, S. Kawakami, M. De Maziere, S. G. Arnold, D. G. Feist, E. A. Barrow, J. Barney, M. Dubey, M. Schneider, L. T. Iraci, J. R. Podolske, P. W. Hillyard, T. Machida, Y. Sawa, K. Tsuboi, H. Matsueda, C. Sweeney, P. P. Tans, A. E. Andrews, S. C. Biraud, Y. Fukuyama, J. V. Pittman, E. A. Kort, and T. Tanaka (2016), Bias corrections of GOSAT SWIR XCO₂ and XCH₄ with TCCON data and their evaluation using aircraft measurement data, Atmos. Meas. Tech., 9, 3491-3512, doi:10.5194/amt-9-3491-2016.
• Pandey, S., S. Houweling, M. Krol, I. Aben, F. Chevallier, E. J. Dlugokencky, L. V. Gatti, E. Gloor, J. B. Miller, R. Detmers, T. Machida, and T. Rockmann (2016), Inverse modeling of GOSAT-retrieved ratios of total column CH₄ and CO₂ for 2009 and 2010, Atmos. Chem. Phys., 16, 5043-5062, doi:10.5194/acp-16-5043-2016.
• Umezawa, T., Y. Niwa, Y. Sawa, T. Machida, and H. Matsueda (2016), Winter crop CO₂ uptake inferred from CONTRAIL measurements over Delhi, India, Geophys. Res. Lett., 43, doi:10.1002/2016GL070939.

• Houweling, S., D. Baker, S. Basu, H. Boesch, A. Butz, F. Chevallier, F. Deng, E. J. Dlugokencky, L. Feng, A. Ganshin, O. Hasekamp, D. Jones, S. Maksyutov, J. Marshall, T. Oda, C. W. O’Dell, S. Oshchepkov, P. I. Palmer, P. Peylin, Z. Poussi, F. Reum, H. Takagi, Y. Yoshida, and R. Zhuravlev (2015), An intercomparison of inverse models for estimating sources and sinks of CO₂ using GOSAT measurements, J. Geophys. Res., 1205253-5266, 120, 5253-5266, doi:10.1002/2014JD022962.
• Matsueda, H., T. Machida, Y. Sawa, Y. Niwa (2015), Long‐term change of CO₂ latitudinal distribution in the upper troposphere, Geophys. Res. Lett., 42, doi:10.1002/2014GL062768.
• Sawa, Y., T. Machida, H. Matsueda, Y. Niwa, K. Tsuboi, S. Murayama, S. Morimoto, S. Aoki (2015), Seasonal changes of CO₂, CH₄, N₂O, and SF₆ in the upper troposphere/lower stratosphere over the Eurasian continent observed by commercial airliner, Geophys. Res. Lett., 42, doi:10.1002/2014GL062734.

• Zhu, Q., Q. Zhuang, D. Henze, K. Bowman, M. Chen, Y. Liu, Y. He, H. Matsueda, T. Machida, Y. Sawa, and W. Oechel (2014), Constraining terrestrial ecosystem CO₂ fluxes by integrating models of biogeochemistry and atmospheric transport and data of surface carbon fluxes and atmospheric CO₂ concentrations, Atmos. Chem. Phys. Discuss., 14, 22587-22638, doi:10.5194/acpd-14-22587-2014.
• Reuter, M., M. Buchwitz, M. Hilker, J. Heymann, O. Schneising, D. Pillai, H. Bovensmann, J. P. Burrows, H. Bosch, R. Parker, A. Butz, O. Hasekamp, C. W. O'Dell, Y. Yoshida, C. Gerbig, T. Nehrkorn, N. M. Deutscher, T. Warneke, J. Notholt, F. Hase, R. Kivi, R. Sussmann, T. Machida, H. Matsueda, and Y. Sawa (2014), Satellite-inferred European carbon sink larger than expected, Atmos. Chem. Phys., 14, 13739-13753, doi:10.5194/acp-14-13739-2014.
• Jiang, F., H. M. Wang, J. M. Cheu, T. Machida, L. X. Zhou, W. M. Ju, H. Matsueda, and Y. Sawa (2014), Carbon balance of China constrained by CONTRAIL aircraft CO₂ measurements, Atmos. Chem. Phys., 14, 10133-10144, doi:10.5194/acp-14-10133-2014.
• Inoue, M., I. Morino, O. Uchino, Y. Miyamoto, T. Saeki, Y. Yoshida, T. Yokota, C. Sweeney, P. P. Tans, S. C. Biraud, T. Machida, J. V. Pettman, E. A. Kort, T. Tanaka, S. Kawakami, Y. Sawa, K. Tsuboi, and H. Matsueda (2014), Validation of XCH₄ derived from SWIR spectra of GOSAT TANSO-FTS with aircraft measurement data, Atmos. Meas. Tech., 7, 2987-3005, doi:10.5194/amt-7-2987-2014.
• Zhang, H. F., B. Z. Chen, I. T. van der Laan-Luijkx, T. Machida, H. Matsueda, Y. Sawa, Y. Fukuyama, R. Langenfelds, M. van der Schoot, G. Xu, J. W. Yan, M. L. Cheng, L. X. Zhou, P. P. Tans, and W. Peters (2014), Estimating Asian terrestrial carbon fluxes from CONTRAIL aircraft and surface CO₂ observations for the period 2006-2010, Atmos. Chem. Phys., 14 5807-5824, doi:10.5194/acp-14-5807-2014.
• Basu, S., M. Krol, A. Butz, C. Clerbaux, Y. Sawa, T. Machida, H. Matsueda, C. Frankenberg, O. P. Hasekamp, and I. Aben (2014), The seasonal variation of the CO₂ flux over Tropical Asia estimated from GOSAT, CONTRAIL, and IASI, Geophys. Res. Lett., 41, 1809-1815, doi:10.1002/2013GL059105.
• Niwa, Y., K. Tsuboi, H. Matsueda, Y. Sawa, T. Machida, M. Nakamura, T. Kawasato, K. Saito, S. Takatsuji, K. Tsuji, H. Nishi, K. Dehara, Y. Baba, D. Kuboike, S. Iwatsubo, H. Ohmori, and Y. Hanamiya (2014), Seasonal variations of CO₂, CH₄, N₂O and CO in the mid-troposphere over the western North Pacific observed using a C-130H cargo aircraft, J. Meteorol. Soc. Japan, 92(1), 50-70, doi:10.2151/jmsj.2014-104.

• Inoue, M., I. Morino, O. Uchino, Y. Miyamoto, Y. Yoshida, T. Yokota, T. Machida, Y. Sawa, H. Matsueda, C. Sweeney, P. P. Tans, A. E. Andrews, S. C. Biraud, T. Tanaka, S. Kawakami, and P. K. Patra (2013), Validation of XCO₂ derived from SWIR spectra of GOSAT TANSO-FTS with aircraft measurement data, Atmos. Chem. Phys., 13, 9771-9788, doi:10.5194/acp-13-9771-2013.
• Miyamoto, Y., M. Inoue, I. Morino, O. Uchino, T. Yokota, T. Machida, Y. Sawa, H. Matsueda, C. Sweeney, P. P. Tans, A. E. Andrews, and P. K. Patra (2013), Atmospheric column-averaged mole fractions of carbon dioxide at 53 aircraft measurement sites, Atmos. Chem. Phys., 13, 5265-5275, doi:10.5194/acp-13-5265-2013.
• Crevoisier, C., D. Nobileau, R. Armante, L. Crépeau, T. Machida, Y. Sawa, H. Matsueda, T. Schuck, T. Thonat, J. Pernin, N. A. Scott, and A. Chédin (2013), The 2007-2011 evolution of tropical methane in the mid-troposphere as seen from space by MetOp-A/IASI, Atmos. Chem. Phys., 13, 4279-4289, doi:10.5194/acp-13-4279-2013.

Other Contributions

• Basu, S., S. Guerlet, A. Butz, S. Houweling, O. Hasekamp, I. Aben, P. Krummel, P. Steele, R. Langenfelds, M. Torn, S. Biraud, B. Stephens, A. Andrews, and D. Worthy (2013), Global CO₂ fluxes estimated from GOSAT retrievals of total column CO₂, Atmos. Chem. Phys., 13, 8695-8717, doi:10.5194/acp-13-8695-2013.
• Kulawik, S. S., J. R. Worden, S. C. Wofsy, S. C. Biraud, R. Nassar, D. B. A. Jones, E. T. Olsen, R. Jimenez, S. Park, G. W. Santoni, B. C. Daube, J. V. Pittman, B. B. Stephens, E. A. Kort, G. B. Osterman, and TES team (2013), Comparison of improved Aura Tropospheric Emission Spectrometer CO₂ with HIPPO and SGP aircraft profile measurements, Atmos. Chem. Phys., 13, 3205-3225, doi:10.5194/acp-13-3205-2013.

• Shirai, T., T. Machida, H. Matsueda, Y. Sawa, Y. Niwa, S. Maksyutov, and K. Higuchi (2012), Relative contribution of transport/surface flux to the seasonal vertical synoptic CO₂ variability in the troposphere over Narita, Tellus, Ser. B, 64, 19138, doi:10.3402/tellusb.v64i0.19138.
• Saitoh, N., M. Touno, S. Hayashida, R. Imasu, K. Siomi, T. Yokota, Y. Yoshida, T. Machida, H. Matsueda, and Y. Sawa (2012), Comparisons between XCH₄ from GOSAT shortwave and thermal infrared spectra and aircraft CH₄ measurements over Guam SOLA, 8, 145-149 doi:10.2151/sola.2012-036.
• Pisso, I., P. Patra, M. Takigawa, T. Machida, H. Matsueda, and Y. Sawa (2012), Anthropogenic CO₂ flux constraints in the Tokyo Bay Area from Lagrangian diffusive backward trajectories and high resolution in situ measurements, Atmos. Chem. Phys. Discuss., 12, 10623-10649, doi:10.5194/acpd-12-10623-2012.
• Schuck, T. J., K. Ishijima, P. K. Patra, A. K. Baker, T. Machida, H. Matsueda, Y. Sawa, T. Umezawa, C. A. M. Brenninkmeijer, and J. Lelieveld (2012), Distribution of methane in the tropical upper troposphere measured by CARIBIC and CONTRAIL aircraft, J. Geophys. Res., 117(D19304), doi:10.1029/2012JD018199.
• Umezawa, T., T. Machida, K. Ishijima, H. Matsueda, Y. Sawa, P. K. Patra, S. Aoki, and T. Nakazawa (2012), Carbon and hydrogen isotopic ratios of atmospheric methane in the upper troposphere over the Western Pacific, Atmos. Chem. Phys., 12, 8095-8113, doi:10.5194/acp-12-8095-2012.
• Niwa, Y., T. Machida, Y. Sawa, H. Matsueda, T. J. Schuck, C. A. M. Brenninkmeijer, R. Imasu, and M. Satoh (2012), Imposing strong constraints on tropical terrestrial CO₂ fluxes using passenger aircraft based measurements, J. Geophys. Res., 117(D11303), doi:10.1029/2012JD017474.
• Sawa, Y., T. Machida, and H. Matsueda (2012), Aircraft observation of the seasonal variation in the transport of CO₂ in the upper atmosphere, J. Geophys. Res., 117(D05305), doi:10.1029/2011JD016933.

• Miyazaki, K., T. Maki, P. Patra, and T. Nakazawa (2011), Assessing the impact of satellite, aircraft, and surface observations on CO₂ flux estimation using an ensemble-based 4-D data assimilation system, J. Geophys. Res., 116(D16306), doi:10.1029/2010JD015366.
• Chevallier, F., N. M. Deutscher, T. J. Conway, P. Ciais, L. Ciattaglia, S. Dohe, M. Frohlich, A. J. Gomez-Pelaez, D. Griffith, F. Hase, L. Haszpra, P. Krummel, E. Kyro, C. Labuschagne, R. Langenfelds, T. Machida, F. Maignan, H. Matsueda, I. Morino, J. Notholt, M. Ramonet, Y. Sawa, M. Schmidt, V. Sherlock, P. Steele, K. Strong, R. Sussmann, P. Wennberg, S. Wofsy, D. Worthy, D. Wunch, and M. Zimnoch (2011), Global CO₂ fluxes inferred from surface air-sample measurements and from TCCON retrievals of the CO₂ total column, Geophys. Res. Lett., 38(L24810), doi:10.1029/2011GL049899.
• Niwa, Y., P. K. Patra, Y. Sawa, T. Machida, H. Matsueda, D. Belikov, T. Maki, M. Ikegami, R. Imasu, S. Maksyutov, T. Oda, M. Satoh, and M. Takigawa (2011), Three-dimensional variations of atmospheric CO₂: aircraft measurements and multi-transport model simulations, Atmos. Chem. Phys., 11, 13359-13375, doi:10.5194/acp-11-13359-2011.
• Basu, S., S. Houweling, W. Peters, C. Sweeney, T. Machida, S. Maksyutov, P. K. Patra, R. Saito, F. Chevallier, Y. Niwa, H. Matsueda, and Y. Sawa (2011), The seasonal cycle amplitude of total column CO₂: Factors behind the model-observation mismatch, J. Geophys. Res., 116(D23306), doi:10.1029/2011JD016124.
• Patra, P. K., Y. Niwa, T. J. Schuck, C. A. M. Brenninkmeijer, T. Machida, H. Matsueda, and Y. Sawa (2011), Carbon balance of South Asia constrained by passenger aircraft CO₂ measurements, Atmos. Chem. Phys., 11, 4163-4175, doi:10.5194/acp-11-4163-2011.
• Feng, L., P. I. Palmer, Y. Yang, R. M. Yantosca, S. R. Kawa, J.-D. Paris, H. Matsueda, and T. Machida (2011), Evaluating a 3-D transport model of atmospheric CO₂ using ground-based, aircraft, and space-borne data, Atmos. Chem. Phys., 11, 2789-2803, doi:10.5194/acp-11-2789-2011.

Other Contributions

• Nassar, R., D. B. A. Jones, S. S. Kulawik, J. R. Worden, K. W. Bowman, R. J. Andres, P. Suntharalingam, J. M. Chen, C. A. M. Brenninkmeijer, T. J. Schuck, T. J. Conway and D. E. Worthy (2011), Inverse modeling of CO₂ sources and sinks using satellite observations of CO₂ from TES and surface flask measurements, Atmos. Chem. Phys., 11, 6029-6047, doi:10.5194/acp-11-6029-2011.

• Chevallier, F., P. Ciais, T. J. Conway, T. Aalto, B. E. Anderson, P. Bousquet, E. G. Brunke, L. Ciattaglia, Y. Esaki, M. Frohlich, A. J. Gomez-Pelaez, L. Haszpra, P. Krummel, R. Langenfelds, M. Leuenberger, T. Machida, F. Maignan, H. Matsueda, J. A. Morgui, H. Mukai, T. Nakazawa, P. Peylin, M. Ramonet, L. Rivier, Y. Sawa, M. Schmidt, P. Steele, S. A. Vay, A. T. Vermeulen, S. Wofsy, D. Worthy (2010), CO₂ surface fluxes at grid point scale estimated from a global 21 year reanalysis of atmospheric measurements, J. Geophys. Res., 115(D21307), doi:10.1029/2010JD013887.
• Wunch, D., G. C. Toon, P. O. Wennberg, S. C. Wofsy, B. B. Stephens, M. L. Fischer, O. Uchino, J. B. Abshire, P. Bernath, S. C. Biraud, J.-F. L. Blavier, C. Boone, K. P. Bowman, E. V. Browell, T. Campos, B. J. Connor, B. C. Daube, N. M. Deutscher, M. Diao, J. W. Elkins, C. Gerbig, E. Gottlieb, D. W. T. Griffith, D.F. Hurst, R. Jimñez, G. Keppel-Aleks, E. A. Kort, R. Macatangay, T. Machida, H. Matsueda, F. Moore, I. Morino, S. Park, J. Robinson, C. M. Roehl, Y. Sawa, V. Sherlock, C. Sweeney, T. Tanaka, and M. A. Zondlo (2010), Calibration of the Total Carbon Column Observing Network using aircraft profile data, Atmos. Meas. Tech., 3, 1351-1362, doi:10.5194/amt-3-1351-2010.
• Ishijima, K., P. K. Patra, M. Takigawa, T. Machida, H. Matsueda, Y. Sawa, L. P. Steele, P. B. Krummel, R. L. Langenfelds, S. Aoki, T. Nakazawa (2010), Stratospheric influence on the seasonal cycle of nitrous oxide in the upper troposphere as deduced from aircraft observations and model simulations, J. Geophys. Res., 115(D20308), doi:10.1029/2009JD013322.
• Araki, M., I. Morino, T. Machida, Y. Sawa, H. Matsueda, H. Ohyama, T. Yokota, O. Uchino (2010), CO₂ Column-Averaged Volume Mixing Ratio Derived over Tsukuba from Measurements by Commercial Airlines, Atmos. Chem. Phys., 10, 7659-7667, doi:10.5194/acp-10-7659-2010.
• Nassar, R., D. B. A., Jones, P. Suntharalingam, J. M. Chen, R. J. Andres, K. J. Wecht, R. M. Yantosca, S. S. Kulawik, K. W. Bowman, J. R. Worden, T. Machida, and H. Matsueda (2010), Modeling global atmospheric CO₂ with improved emission inventories and CO₂ production from the oxidation of other carbon species, Geosci. Model Dev., 3, 689-716, doi:10.5194/gmd-3-689-2010.
• Kulawik, S. S., D. B. A. Jones, R. Nassar, F. W. Irion, J. R. Worden, K. W. Bowman, T. Machida, H. Matsueda, Y. Sawa, S. C. Biraud, M. L. Fischer, A. R. Jacobson (2010), Characterization of Tropospheric Emission Spectrometer (TES) CO₂ for carbon cycle science, Atmos. Chem. Phys., 10, 5601-5623, doi:10.5194/acp-10-5601-2010.

• Volz-Thomas, A., J-P. Cammas, C. Brenninkmeijer, T. Machida, O. Cooper, C. Sweeney, A. Waibel (2009), Civil aviation monitors air quality and climate, EM Magazine, Air & Waste Management Association, 16-19, October 2009.
• Crevoisier, C., A. Chédin, H. Matsueda, T. Machida, R. Armante, and N.A. Scott (2009), First year of upper tropospheric integrated content of CO₂ from IASI hyperspectral infrared observations, Atmos. Chem. Phys., 9, 4797-4810, doi:10.5194/acp-9-4797-2009.
• Miyazaki, K., T. Machida, P. K. Patra, T. Iwasaki, Y. Sawa, H. Matsueda, and T. Nakazawa (2009), Formation mechanisms of latitudinal CO₂ gradients in the upper troposphere over the subtropics and tropics, J. Geophys. Res., 114(D03306), doi:10.1029/2008JD010545.

• Sawa, Y., T. Machida, H. Matsueda (2008), Seasonal variations of CO₂ near the trpopause observed by commercial aircrafts, J. Geophys. Res., 113(D23301), doi:10.1029/2008JD010568.
• Machida, T., H. Matsueda, Y. Sawa, Y. Nakagawa, K. Hirotani, N. Kondo, K. Goto, N. Nakazawa, K. Ishikawa and T.Ogawa (2008), Worldwide measurements of atmospheric CO₂ and other trace gas species using commercial airlines, J. Atmos. Oceanic Technol., 25(10), 1744-1754, doi:10.1175/2008JTECHA1082.1.
• Matsueda, H., T. Machida, Y. Sawa, Y. Nakagawa, K. Hirotani, H. Ikeda, N. Kondo, and K. Goto (2008), Evaluation of atmospheric CO₂ measurements from new flask air sampling of JAL airliner observations, Pap. Meteorolo. Geophys., 59, 1-17.