Environmental Geochemical Cycle Research Group
Senior Researcher

Research filed

Atmospheric chemistry, Physical chemistry


Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
Yokohama Institute for Earth Sciences (YES)
3173-25 Showa-machi, Kanazawa, Yokohama, Kanagawa, 236-0001, Japan

Research interests

Laboratory studies on chemical reaction in the atmosphere

  • Kinetic study of heterogeneous loss of HO2 radical by atmospheric aerosol particles and estimate of their contribution.

Field observations of gases and aerosols

  • Air pollution in East Asia
  • Optical property and chemical composition of PM2.5 in East Asia
  • Investigation of property of marine aerosol particles by research vessels (Mirai)
  • Black carbon property at high latitude

Development of new instrument

  • Development of instruments for atmospheric particles by laser spectroscopy


Born in Toyama Pref.


2001 BS, Niigata Univ. (Department of Chemistry, School of Science)
2006 Ph.D., Nagoya Univ. (Division of Particle and Astrophysical Science, Graduate School of Science)


2006 – 2009 Post-doc researcher,
Atmospheric Composition Research Program, Frontier Research Center for Global Change, JAMSTEC
2009 – 2013 Research Scientist
Atmospheric Composition Research Team, Environmental Biogeochemical Cycle Research Program (EBCRP), Research Institute for Global Change (RIGC), JAMSTEC
2013 – 2014 Senior Research Scientist
Atmospheric Composition Research Team, Environmental Biogeochemical Cycle Research Program (EBCRP), Research Institute for Global Change (RIGC), JAMSTEC
2014 – Senior Research Scientist
Department of Environmental Geochemical Cycle Research (DEGCR), JAMSTEC
2015 – Institute of Arctic Climate and Environment Research (IACE), JAMSTEC (concurrent)


  • 49) F. Taketani, M. N. Aita, K. Yamaji, T. Sekiya, K. Ikeda, K. Sasaoka, T. Hashioka, M. C. Honda, K. Matsumoto, Y. Kanaya, “Seasonal Response of North Western Pacific Marine Ecosystems to Deposition of Atmospheric Inorganic Nitrogen Compounds from East Asia”, Sci. Rep. 8, 9324 (2018)
  • 48) M. Takigawa, M. Yamaguchi, F. Taketani, Y. Kanaya, Y. Kondo “Near real-time simulation data of atmospheric components and meteorology in the Arctic region using the WRF-Chem model from August to September 2016” Polar Data Journal ,2,1-13 (2018)
  • 47) Y. Kanaya, H. Matsui, F. Taketani, X. Pan, Y. Komazaki, Z. Wang, L.Chang, D. Kang, M. Choi, S. Kim, C. Kang, A. Takami, H. Tanimoto, K. Ikeda, K. Yamaji “Observed and Modeled Mass Concentrations of Organic Aerosols and PM2.5 at Three Remote Sites around the East China Sea: Roles of Chemical Aging” Aerosol Air Qual. Res. 17, 3091-3105 (2017)
  • 46) K. Ikeda, ,H. Tanimoto, T. Sugita, H. Akiyoshi, Y. Kanaya, C. Zhu, F. Taketani “Tagged tracer simulations of black carbon in the Arctic: transport, source contributions, and budget” Atmos. Chem. Phys., 17, 10515-10533, (2017)
  • 45) T. Miyakawa, N. Oshima, F. Taketani,, Y. Komazaki, A. Yoshino, A. Takami, Y. Kondo, Y. Kanaya “Alteration of the size distributions and mixing states of black carbon through transport in the boundary layer in east Asia” Atmos. Chem. Phys, 17, 5851-5864, (2017)
  • 44) X. Pan, Y. Kanaya, F. Taketani, T. Miyakawa, S. Inomata, Y. Komazaki, H. Tanimoto, Z. Wang, I. Uno, Z. Wang ”Emission characteristics of refractory black carbon aerosols from fresh biomass burning: a perspective from laboratory experiments” Atmos. Chem. Phys. 17, 13001-13016, (2017).
  • 43) H. Takashima, Y. Kanaya, F. Taketani “Downsizing of a ship-borne MAX-DOAS instrument” JAMSTEC Rep. Res. Dev.. 23 34-40 (2016).
  • 42) F. Taketani, Y. Kanaya, T. Nakayama, S. Ueda, Y. Matsumi, Y. Sadanaga, Y. Iwamoto, A. Matsuki “Property of Black Carbon Particles Measured by a Laser-Induced Incandescence Technique in the spring at Noto Peninsula, Japan” Earozoru Kenkyu, in press (2016).
  • 41) Y. Kanaya, X. Pan, T. Miyakawa, Y. Komazaki, F. Taketani, I. Uno, Y. Kondo ” Long-term observations of black carbon mass concentrations at Fukue Island, western Japan, during 2009–2015: Constraining wet removal rates and emission strengths from East Asia” Atmos. Chem. Phys. Discuss. doi:10.5194/acp-2016-213 (2016)
  • 40) F. Taketani, T. Miyakawa, H. Takashima, X. Pan, Y. Komazaki, J. Inoue, and Y. Kanaya “Ship-borne observation of atmospheric black carbon aerosols over the Arctic Ocean, Bearing Sea, and North Pacific Ocean in September” J. Geophys. Res. Atmos 121, 1914–1921, doi:10.1002/2015JD023648 (2016)
    Press release and Research Spotlight, AGU「EOS」.
  • 39) Y. Kanaya, H. Tanimoto, Y. Yokouchi, F. Taketani, Y. Komazaki, H. Irie, H. Takashima, X. Pan, S. Nozoe, S. Inomata, “Diagnosis of Photochemical Ozone Production Rates and Limiting Factors in Continental Outflow Air Masses Reaching Fukue Island, Japan: Ozone-Control Implications”, Aerosol and Air Quality Res., doi: 10.4209/aaqr.2015.04.0220.
  • 38) T. Miyakawa, Y. Kanaya, Y. Komazaki, F. Taketani, X. Pan, M. Irwin, and J. Symonds “Refractory Black Carbon and Elemental Carbon Aerosols in an Industrial Area, Japan: Implications for the Consistency of Soot Aerosol Mass Concentration Measurements” Atmos. Environ., 2015
  • 37) S. Ueda, T. Nakayama, F. Taketani, K. Adachi, A. Matsuki, Y. Iwamoto, Y. Sadanaga, and Y. Matsumi “Light absorption and morphological properties of soot-containing aerosols observed at an East Asian outflow site, Noto Peninsula, Japan” Atmos. Chem. Phys. (2016) 16, 2525-2541, doi:10.5194/acp-16-2525-2016
  • 36) S. Inomata, H. Tanimoto1, X. Pan, F. Taketani, Y. Komazaki, T. Miyakawa, Y. Kanaya, Z. Wang” Laboratory measurements of emissions of nonmethane volatile organic compounds from biomass burning in Chinese crop residues” J. Geophys. Res. Atmos. (2015) 120, 5237–5252, doi:10.1002/2014JD022761
  • 35) Taketani, F. Y. Kanaya, T. Nakamura, N. Takeda, K. Koizumi, N. Hirayama, T. Miyakawa, X. Pan, N. Moteki, N. Takegawa, “Analysis of the mixing State of airbone particles using a tandem combination of laser-induced fluorescence and incandescence techniques”, J. Aerosol. Sci. (2015) 87,102-110.
  • 34) T. Miyakawa, T, Y. Kanaya, F. Taketani, M. Tabaru, N. Sugimoto, Y. Ozawa, N. Takegawa, “Ground-based measurement of fluorescent aerosol particles in Tokyo in the spring of 2013: Potential Impacts of non-biological materials on autofluorescence measurements of airborne particles”, J. Geophys. Res. Atmos. (2015), 120, 1171–1185, doi:10.1002/2014JD022189
  • 33) S. Kudo, S., H. Tanimoto, S. Inomata, S. Saito, X. Pan, Y. Kanaya, F. Taketani, Z. Wang, H. Chen, H. Dong, M. Zhang, and K. Yamaji, “Emissions of nonmethane volatile organic compounds from open crop residue burning in the Yangtze River Delta region, China”, J. Geophys. Res. Atmos. (2014), 119, 7684–7698, doi:10.1002/2013JD021044.
  • 32) Ikeda, K., K. Yamaji, Y. Kanaya, F. Taketani, X. Pan, Y. Komazaki, J. Kurokawa and T. Ohara, “Source region attribution of PM2.5 mass concentrations over Japan”, Geochem. J., (2015) 49(2), 185-194.
  • 31) X. Pan, Y. Kanaya, Z. Wang, X. Tang, M. Takigawa, F. Taketani, H. Akimoto “Using Bayesian optimization method and FLEXPART tracer model to evaluate CO emission in East China in springtime” Environ. Sci. Poll. Res., 21, (2014), 3873-3879.
  • 30)  K. Ikeda, K. Yamaji, Y. Kanaya, F. Taketani, X. Pan, Y. Komazaki,J. Kurokawa, T. Ohara “Sensitivity analysis of source regions to PM2.5 concentrations at Fukue Island, Japan” J. Air Waste Manag. Assoc., 64, (2014), 445-452
  • 29) F. Taketani, Y. Kanaya, H. Akimoto, ”Kinetic studies of heterogeneous reaction of HO2 radical by dicarboxylic acid particles”, Int. J. Chem. Kinet,., 45, (2013) 560-565.
  • 28) J. Li, Z. Wang, K. Yamaji, M. Takigawa, Y. Kanaya, F. Taketani, Pan, M. Hu, F. Meng and T. Yang “Uplifting of Asian Continental Pollution Plumes from the Boundary Layer to the Free Atmosphere over the Northwestern Pacific Rim in Spring”  SOLA,  9 (2013) p. 40-44
  • 27)  F. Taketani ., Y. Kanaya, T. Nakamura, K. Koizumi, N. Moteki, N. Takegawa, “Measurement of Fluorescence Spectra from Atmospheric Single Submicron Particle Using Laser-induced Fluorescence Technique”, J. Aerosol. Sci. 58, (2013), 1-8.
  • 26)  Y. Kanaya, H. Akimoto, Z.-F. Wang, P. Pochanart, K. Kawamura, Y. Liu, J. Li, Y. Komazaki, H. Irie, X.-L. Pan, F. Taketani, K. Yamaji, H. Tanimoto, S. Inomata, S. Kato, J. Suthawaree, K. Okuzawa, G. Wang, S.G. Aggarwal, P.Q. Fu, T. Wang, J. Gao, Y. Wang, and G. Zhuang, “Overview of the Mt. Tai Experiments (MTX2006) in Central East China in June 2006: studies of significant regional air pollution”, Atmos. Chem. Phys. 13, (2013), 8265-8283, 2013
  • 25)  Y. Kanaya, F. Taketani, Y. Komazaki, X.Liu, Y. Kondo, L. K. Sahu, H. Irie, H. Takashima, “Comparison of black carbon mass concentrations observed by multi-angle absorption photometer (MAAP) and continuous soot-monitoring system (COSMOS) on Fukue Island and in Tokyo, Japan”, Aerosol Sci. Technol., 47, (2013), 1-10.
  • 24) F. Taketani, Y. Kanaya, P. Pochanart, Y. Liu, J. Li, K. Okuzawa, K. Kawamura, Z. Wang, H. Akimoto,“Measurement of overall uptake coefficients for HO2 radicals by aerosol particles sampled from ambient air at Mts. Tai and Mang, China”, Atmos. Chem. Phys., 12 , (2012), 11907-11916.
  • 23) X-L. Pan., Y. Kanaya, Z. Wang, F. Taketani, H. Tanimoto, H. Irie, H. Takashima, S. Inomata, Emission ratio of carbonaceous aerosols observed near crop residual burning sources in a rural area of the Yangtze River Delta Region, China. J. Geophys. Res. Atmospheres, 117, (2012) D22304, doi:10.1029/2012JD018357
  • 22)  X-L. Pan, Y. Kanaya, , Z. F. Wang, , Y. Komazaki, F. Taketani, H. Akimoto, P. Pochanart, Y. Liu, ”Estimation of lifetime of carbonaceous aerosol from open crop residue burning during Mount Tai Experiment 2006 (MTX2006)” Atmos. Chem. Phys. Discuss., 12, (2012), 14363-14392.
  • 21)  F. Taketani, Y. Kanaya, H. Akimoto, “Kinetics of HO2 Uptake in Levoglucosan and Polystyrene Latex Particles” J. Phys. Chem. Lett., 1, 11, (2010), 1701–1704
  • 20)  Y. Kanaya, F. Taketani, H. Irie, Y. Komazaki, H. Takashima, I. Uno, ” PM2.5 mass concentrations observed at Fukue Island, Kyushu, Japan: Exceedance with respect to atmospheric environmental standard” J. Jpn. Soc. Atmos, Environ. 45 (2010), 289-292.(九州福江島における通年PM2.5質量濃度測定値の大気環境基準超過, 大気環境学会誌)
  • 19)  Y. Matsumi, F. Taketani, K. Takahashi, T. Nakayama, M. Kawai, Y. Miyao, Fluorescence detection of atmospheric nitrogen dioxide using a blue light-emitting diode as an excitation source, Appl. Opt., 49, (2010), 3762-3767.
  • 18)  F. Taketani, Y. Kanaya, H. Akimoto, “Heterogeneous Loss of HO2 by KCl, Synthetic sea salt and natural seawater aerosol particles” Atmos. Environ., 43, (2009), 1660–1665.
  • 17)  Y. Kanaya, Y., P. Pochanart, Y. Liu, J. Li, H. Tanimoto, S. Kato, J. Suthawaree, S. Inomata, F. Taketani, K. Okuzawa, K. Kawamura, H. Akimoto, and Z. F. Wang, “Rates and regimes of photochemical ozone production over Central East China in June 2006: A box model analysis using comprehensive measurements of ozone precursors”, Atmos. Chem. Phys., 9, (2009), 7711-7723.
  • 16)  F. Taketani, Y. Kanaya, H. Akimoto, “Kinetics of heterogeneous reactions of HO2 radical at ambient concentration levels with (NH4)2SO4 and NaCl aerosol particles”, J. Phys. Chem. A, 112, (2008), 2370 – 2377.
  • 15)  T. Nakayama, T. Ide, F. Taketani, M. Kawai, K. Takahashi, Y. Matsumi. “Nighttime measurements of ambient N2O5, NO2, NO and O3 in a sub-urban area, Toyokawa, Japan”, Atmos. Environ., 42, (2008), 1995-2006.
  • 14)   F. Taketani, M. Kawai, K. Takahashi, Y. Matsumi, “Trace detection of atmospheric NO2 by laser-induced fluorescence using a GaN diode laser and a diode-pumped YAG laser”, Appl. Opt., 46, (2007), 907-914.
  • 13)  E. Nilsson, M. S. Johnson, F. Taketani, Y. Matsumi, M. D. Hurley, T. J. Wallington “Atmospheric deuterium fractionation: HCHO and HCDO yields in the CH2DO + O2 reaction”, Atmos. Chem. Phys., 7, (2007), 5873-5881.
  • 12)  E. Iwasaki, F. Taketani, K. Takahashi, Y. Matsumi, T. J. Wallington, M. D. Hurley, “Mechanism of the gas phase reaction of chlorine atoms with butanone”, Chem. Phys. Lett., 439, (2007), 274-279.
  • 11)  F. Taketani, Y. Matsumi, T. J. Wallington, M. D. Hurley, “Kinetics of the gas phase reactions of chlorine atoms with a series of ketones”, Chem. Phys. Lett., 431, (2006), 257-260.
  • 10) F. Taketani, T. Nakayama, K. Takahashi, Y. Matsumi, M. D. Hurley, T. J. Wallington, A. Toft, M. P. Sulbaek Andersen, “Atmospheric chemistry of CH3CHF2 (HFC-152a): kinetics, mechanisms, and products of Cl atom and OH radical initiated oxidation in presence and absence of NOx J. Phys. Chem. A, 109, (2005), 9061-9069.
  • 9) F. Taketani, K. Takahashi, Y. Matsumi, and T. J. Wallington, “Kinetics of the reactions of Cl*(2P1/2) and Cl(2P3/2) atoms with CH3OH, C2H5OH, n-C3H7OH, and i-C3H7OH at 295K”, J. Phys. Chem. A, 109, (2005), 3935 – 3940.
  • 8) F. Taketani, K. Takahashi, and Y. Matsumi,” Laser-induced fluorescence study of the quenching of Cl(2P1/2) in collisions with N2 molecules and rare gas atoms”, Chem. Phys. Lett., 406, (2005), 259 – 262.
  • 7)    F. Taketani, K. Takahashi and Y. Matsumi, “Quantum yields for Cl(2Pj) atom formation from the photolysis of chlorofluorocarbons and chlorinated hydrocarbons at 193.3 nm”, J. Phys. Chem. A, 109, (2005), 2855 – 2860.
  • 6)    K. Yamasaki, S. Tomita, T. Hatano, F. Taketani, I. Tokue “Radiative lifetime and multiquantum vibrational relaxation of SO(B3S-, v' = 3) by collisions with He”, Chem. Phys. Lett., 413, (2005), 231-236.
  • 5)    M. E. Jenkin, M. P. Sulbaek Andersen, M. D. Hurley, T. J. Wallington, F. Taketani, Y. Matsumi, “A kinetics and mechanistic study of the OH and NO2 initiated oxidation of 1,3-cyclohexadiene in the gas phase” Phys. Chem. Chem. Phys., 7, (2005), 1194-1204
  • 4)    S. Nishida, F. Taketani, K. Takahashi and Y. Matsumi, ”Quantum yield for O(1D) production from ozone photolysis in the wavelength range of 193 - 225 nm”, J. Phys. Chem. A, 108, (2004), 2710 – 2714.
  • 3)    K. Yamasaki, F. Taketani, K. Sugiura, I. Tokue and K. Tsuchiya, “Vibrational relaxation of SO(X3Σ- , v = 1 - 5) and nascent vibrational distributions of SO generated in the photolysis of SO2 at 193.3 nm” J. Phys. Chem. A, 108, (2004), 2382 – 2388.
  • 2)    K. Yamasaki, F. Taketani, Y. Takasago, K. Sugiura and I. Tokue, “Kinetic study on vibrational relaxation of SO(B3Σ- v' = 1 and 2) by collisions with He”, J. Phys. Chem. A, 107, (2003), 4796 – 4800.
  • 1)    K. Yamasaki, F. Taketani, S. Tomita, K. Sugiura and I. Tokue, “Collision-free lifetimes of SO(B3Σ- v' = 0, 1 and 2) and vibrational level dependence of deactivation by He”, J. Phys. Chem. A, 107, (2003), 2442 – 2447.


2013 Young Researcher Award from Japan Society of Atmospheric Chemistry for FY2013