Updated on 2021/03/30

写真a

 
MOCHIDA, Michihiro
 
Organization
Institute for Space-Earth Environmental Research Meteorological and Atmospheric Research Division Professor
Graduate School
Graduate School of Environmental Studies
Title
Professor
Contact information
メールアドレス

Degree 1

  1. 博士(理学) ( 1999.3   東京大学 ) 

Research Interests 2

  1. Atmospheric Chemistry

  2. Atmospheric Aerosol

Research Areas 2

  1. Others / Others  / Environmental Dynamic Analysis

  2. Others / Others  / Earth Astrohemistry

Current Research Project and SDGs 5

  1. 大気エアロゾル粒子の吸湿特性と雲凝結核活性の解明

  2. 大気有機エアロゾルの光吸収特性の解明

  3. 有機エアロゾルの多相酸化反応に関する室内実験研究

  4. 大気有機エアロゾルの化学構造と起源の関係の理解

  5. 大気エアロゾルの健康影響に関わる性状の研究

Research History 1

  1. Nagoya University   Professor

    2018.4

Education 2

  1. The University of Tokyo   Graduate School, Division of Science

    1996.4 - 1999.3

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    Country: Japan

  2. The University of Tokyo   Graduate School, Division of Science

    1994.4 - 1996.3

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    Country: Japan

Professional Memberships 2

  1. 日本地球惑星科学連合

  2. 日本大気化学会

Committee Memberships 6

  1. international Commission on Atmospheric Chemistry and Global Pollution (iCACGP)   Member  

    2019   

  2. Atmoshperic Environment (Elsevier)   Editorial Advisery Board Member  

    2015.11   

  3. 日本学術会議・環境学委員会・地球惑星科学合同IGBP・WCRP・DIVERSITAS合同分科会IGAC小委員会   委員  

    2015.2 - 2017.9   

  4. 日本大気化学会運営委員会   運営委員  

    2015 - 2019   

  5. Atmospheric Research (Elsevier)   Associate Editor  

    2014.10 - 2019   

  6. 北海道大学低温科学研究所共同利用・共同研究拠点課題等審査委員会   委員  

    2014.10 - 2016   

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Awards 1

  1. 2008年度奨励賞

    2008.10   大気化学研究会  

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    Country:Japan

 

Papers 48

  1. 紀伊半島の森林における大気エアロゾル粒子の生成・成長とその雲凝結核としての寄与 Invited Reviewed

    持田 陸宏

    エアロゾル研究   Vol. 36 ( 1 ) page: 25 - 31   2021.3

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)  

    特集「森林ー大気系におけるエアロゾルの挙動」における解説

  2. Assessment of the Sphericity of Submicrometer Particles Using a Single-particle Polar Nephelometer at an Urban Site in Japan Reviewed

    Nakagawa Maho, Nakayama Tomoki, Sasago Hiroshi, Kuruma Yuki, Yai Hikari, Ogawa Shuhei, Deng Yange, Mochida Michihiro, Matsumi Yutaka

    AEROSOL AND AIR QUALITY RESEARCH   Vol. 20 ( 11 ) page: 2474 - 2484   2020.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.4209/aaqr.2020.01.0023

    Web of Science

  3. Diurnal variation and size dependence of the hygroscopicity of organic aerosol at a forest site in Wakayama, Japan: their relationship to CCN concentrations

    Deng Yange, Yai Hikari, Fujinari Hiroaki, Kawana Kaori, Nakayama Tomoki, Mochida Michihiro

    ATMOSPHERIC CHEMISTRY AND PHYSICS   Vol. 19 ( 9 ) page: 5889 - 5903   2019.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.5194/acp-19-5889-2019

    Web of Science

  4. Chemical transfer of dissolved organic matter from surface seawater to sea spray water-soluble organic aerosol in the marine atmosphere

    Miyazaki Yuzo, Yamashita Youhei, Kawana Kaori, Tachibana Eri, Kagami Sara, Mochida Michihiro, Suzuki Koji, Nishioka Jun

    SCIENTIFIC REPORTS   Vol. 8   2018.10

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/s41598-018-32864-7

    Web of Science

  5. Hygroscopicity of Organic Aerosols and Their Contributions to CCN Concentrations Over a Midlatitude Forest in Japan

    Deng Yange, Kagami Sara, Ogawa Shuhei, Kawana Kaori, Nakayama Tomoki, Kubodera Ryo, Adachi Kouji, Hussein Tareq, Miyazaki Yuzo, Mochida Michihiro

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES   Vol. 123 ( 17 ) page: 9703-9723   2018.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1029/2017JD027292

    Web of Science

  6. Comparison of Aerosol Hygroscopcity, Volatility, and Chemical Composition between a Suburban Site in the Pearl River Delta Region and a Marine Site in Okinawa

    Cai Mingfu, Tan Haobo, Chan Chak K., Mochida Michihiro, Hatakeyama Shiro, Kondo Yutaka, Schurman Misha I., Xu Hanbing, Li Fei, Shimada Kojiro, Li Liu, Deng Yange, Yai Hikari, Matsuki Atsushi, Qin Yiming, Zhao Jun

    AEROSOL AND AIR QUALITY RESEARCH   Vol. 17 ( 12 ) page: 3194-3208   2017.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.4209/aaqr.2017.01.0020

    Web of Science

  7. Structural and Light-Absorption Characteristics of Complex Water-Insoluble Organic Mixtures in Urban Submicrometer Aerosols

    Chen Qingcai, Ikemori Fumikazu, Nakamura Yuua, Vodicka Petr, Kawamura Kimitaka, Mochida Michihiro

    ENVIRONMENTAL SCIENCE & TECHNOLOGY   Vol. 51 ( 15 ) page: 8293-8303   2017.8

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acs.est.7b01630

    Web of Science

  8. Hygroscopicity and cloud condensation nucleus activity of forest aerosol particles during summer in Wakayama, Japan

    Kawana Kaori, Nakayama Tomoki, Kuba Naomi, Mochida Michihiro

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES   Vol. 122 ( 5 ) page: 3042-3064   2017.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/2016JD025660

    Web of Science

  9. Fungal spores overwhelm biogenic organic aerosols in a midlatitudinal forest Reviewed

    Chunmao Zhu, Kimitaka Kawamura, Yasuro Fukuda, Michihiro Mochida, and Yoko Iwamoto

    Atmospheric Chemistry and Physics   Vol. 16   page: 7497-7506   2016.6

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: doi:10.5194/acp-16-7497-2016

  10. Hygroscopicity of aerosol particles and CCN activity of nearly-hydrophobic particles in the urban atmosphere over Japan during summer Reviewed

    Shuhei Ogawa, Yoshitaka Setoguchi, Kaori Kawana, Tomoki Nakayama, Yuka Ikeda, Yuuki Sawada, Yutaka Matsumi, and Michihiro Mochida

    Journal of Geophysical Research: Atmospheres   Vol. 121   page: 7215-7234   2016.6

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/2015JD024636

  11. Hygroscopicity and CCN activity of atmospheric aerosol particles and their relation to organics: Characteristics of urban aerosols in Nagoya, Japan Reviewed

    Kaori Kawana, Tokoki Nakayama, and Michihiro Mochida

    Journal of Geophysical Research: Atmospheres   Vol. 121   page: 4100-4121   2016.4

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    Language:English   Publishing type:Research paper (scientific journal)  

  12. Total OH reactivity measurement in a BVOC dominated temperate forest during a summer campaign, 2014 Reviewed

    Sathiyamurthi Ramasamy, Akira Ida, Charlotte Jones, Shungo Kato, Hiroshi Tsurumaru, Iori Kishimoto, Shio Kawasaki, Yasuhiro Sadanaga, Yoshihiro Nakashima, Tomoki Nakayama, Yutaka Matsumi, Michihiro Mochida, Sara Kagami, Yange Deng, Shuhei Ogawa, Kaori Kawana, and Yoshizumi Kajii

    Atmospheric Environment   Vol. 131   page: 41-54   2016.4

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    Language:English   Publishing type:Research paper (scientific journal)  

  13. Formation of high-molecular-weight compounds via the heterogeneous reactions of gaseous C8-C10 n-aldehydes in the presence of atmospheric aerosol components Reviewed

    Yuemei Han, Kimitaka Kawamura, Qingcai Chen, and Michihiro Mochida

    Atmospheric Environment   Vol. 126   page: 290-297   2016.2

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    Language:English   Publishing type:Research paper (scientific journal)  

  14. Chemical structural characteristics of HULIS and other fractionated organic matter in urban aerosols: Results from mass spectral and FT-IR analysis Reviewed

    Qingcai Chen, Fumikazu Ikemori, Hayato Higo, Daichi Asakawa, and Michihiro Mochida

    Environmental Science & Technology   Vol. 50   page: 1721-1730   2016.2

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    Language:English   Publishing type:Research paper (scientific journal)  

  15. Characterization of single particles in urban atmospheric aerosols over Nagoya based on mass spectral analysis Reviewed

    Toshiyuki Mihara and Michihiro Mochida

    Aerosol Science and Technology   Vol. 49   page: 1078-1089   2015

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1080/02786826.2015.1096010

  16. Properties of light-absorbing aerosols in the Nagoya urban area, Japan, in August 2011 and January 2012: Contributions of brown carbon and lensing effect Reviewed

    Tomoki Nakayama, Yuka Ikeda, Yuuki Sawada, Yoshitaka Setoguchi, Shuhei Ogawa, Kaori Kawana, Michihiro Mochida, Fumikazu Ikemori, Kiyoshi Matsumoto, Yutaka Matsumi

    Journal of Geophysical Research   Vol. 119   page: 12,721–12,739   2014.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/2014JD021744

  17. 大気エアロゾル粒子の吸湿性と雲凝結核活性:理論,測定および展望 Invited Reviewed

    持田陸宏

    低温科学   Vol. 72   page: 41-48   2014.3

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    Authorship:Lead author   Language:Japanese   Publishing type:Research paper (bulletin of university, research institution)  

  18. Assessment of cloud condensation nucleus activation of urban aerosol particles with different hygroscopicity and the application to the cloud parcel model Reviewed

    Kaori Kawana, Naomi Kuba, and Michihiro Mochida

    Journal of Geophysical Research   Vol. 119   page: 3352-3371   2014.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/2013JD020827

  19. Simultaneous measurements of hygroscopic property and cloud condensation nucleus activity of aerosol particles of marine biogenic origin

    M. Mochida

    Western Pacific Air-Sea Interaction Study     page: 71-81   2014.3

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    Language:English  

    DOI: 10.5047/w-pass.a01.008

  20. 大気中における有機物の関与する不均一/多相反応:オゾン酸化およびアルデヒドの反応 Reviewed

    持田陸宏,韓月梅,村瀬沙織

    エアロゾル研究   Vol. 29 ( S1 ) page: 66-71   2014.2

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    Language:Japanese  

  21. Formation and evolution of biogenic secondary organic aerosol over a forest site in Japan Reviewed

    Journal of Geophysical Research   Vol. 119   page: 259-273   2014.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/2013JD020390

  22. Particle effective density measurement using a DMA-APMCPC system in Nagoya, Japan: Estimation of mixing state and shape

      Vol. 68   page: 48-49   2013.1

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  23. Measurements of light absorption enhancement of black carbon using a photoacoustic spectrometer in Nagoya, Japan

    Tomoki Nakayama, Yuka Ikeda, Yuuki Sawada, Yutaka Matsumi, Yoshitaka Setoguchi, Kaori Kawana and Michihiro Mochida

      Vol. 68   page: 50-52   2013.1

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  24. Observation of new particle formation over a mid-latitude forest facing the North Reviewed

    Yuemei Han, Yoko Iwamoto, Tomoki Nakayama, Kimitaka Kawamura, Tareq Hussein, Michihiro Mochida

    Atmospheric Environment   Vol. 64   page: 77-84   2013

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.atmosenv.2012.09.036

  25. Ice core records of biomass burning tracers (levoglucosan and dehydroabietic, vanillic and p-hydroxybenzoic acids) and total organic carbon for past 300 years in the Kamchatka Peninsula, Northeast Asia Reviewed

    Kimitaka Kawamura, Yusuke Izawa, Michihiro Mochida, and Takayuki Shiraiwa

    Geochimica et Cosmochimica Acta   Vol. 99   page: 317-329   2012

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.gca.2012.08.006

  26. Hygroscopicity and cloud condensation nucleus activity of marine aerosol particles over the western North Pacific Reviewed

    M. Mochida, C. Nishita-Hara, H. Furutani, Y. Miyazaki, J. Jung, K. Kawamura, M. Uematsu

    Journal of Geophysical Research   Vol. 116 ( D06204 ) page: doi:10.1029/2010JD014759   2011.3

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  27. Characterization of solvent-extractable organics in urban aerosols based on mass spectrum analysis and hygroscopic growth measurement Reviewed

    Toshiyuki Mihara, Michihiro Mochida

    Environemtal Science & Technology   Vol. 45 ( 21 ) page: 9168-9174   2011

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/es201271w

  28. Size-segregated measurements of cloud condensation nucleus activity and hygroscopic growth for aerosols at Cape Hedo, Japan, in spring 2008 Reviewed

    M. Mochida, C. Nishita-Hara, Y. Kitamori, S. G. Aggarwal, K. Kawamura, K. Miura, A. Takami

    Journal of Geophysical Research   Vol. 115 ( D21207 ) page: doi:10.1029/2009JD013216   2010.11

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  29. Seasonal variation of levoglucosan in aerosols over the western North Pacific and its assessment as a biomass-burning tracer Reviewed

    M. Mochida, K. Kawamura, P. Fu, T. Takemura

    Atmospheric Environment   Vol. 44   page: 3511-3518   2010.9

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  30. Formation and Transport of Aerosols in Tokyo in Relation to Their Physical and Chemical Properties: A Review Reviewed

    Yutaka Kondo, Nobuyuki Takegawa, Hitoshi Matsui, Takuma Miyakawa, Makoto Koike, Yuzo Miyazaki, Yugo Kanaya, Michihiro Mochida, Mikinori Kuwata, Yu Morino and Manabu Shiraiwa

    Journal of the Meteorological Society of Japan     2010

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.2151/jmsj.2010-401

  31. Assessment of the aerosol water content in urban atmospheric particles by the hygroscopic growth measurements in Sapporo, Japan Reviewed

    Y. Kitamori, M. Mochida, K. Kawamura

    Atmospheric Environment   Vol. 43   page: 3416-3423   2009.7

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    Language:English   Publishing type:Research paper (scientific journal)  

  32. Significant alteration in the hygroscopic properties of urban aerosol particles by the secondary formation of organics Reviewed

    Mochida M., T. Miyakawa, N. Takegawa, Y. Morino, K. Kawamura, Y. Kondo

    Geophysical Research Letters   Vol. 35   page: L02804, doi:10.1029/2007GL031310   2008.1

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  33. 都市大気中の半揮発性ジカルボニルとヒドロキシカルボニル化合物の日変動 Reviewed

    奥沢和浩, 持田陸宏, J. Bendle, H. Wang, 河村公隆

    地球化学   Vol. 41   page: 125-134   2007.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

  34. Chemical closure study on hygroscopic properties of urban aerosol particles in Sapporo, Japan Reviewed

    Aggarwal, S. G., M. Mochida, Y. Kitamori, K. Kawamura

    Environmental Science & Technology   Vol. 41   page: 6920-6925   2007.10

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  35. Bimodal size distributions of various organic acids and fatty acids in the marine atmosphere: Influence of anthropogenic aerosols, Asian dusts and sea spray off the coast of East Asia Reviewed

    Mochida, M., N. Umemoto, K. Kawamura, H.-J. Lim, B. J. Turpin

    Journal of Geophysical Research   Vol. 112   page: D15209, doi:10.1029/2006JD007773   2007.8

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  36. Chemistry of OH and HO2 radicals observed at Rishiri Island, Japan, in September 2003: Missing daytime sink of HO2 and positive nighttime correlations with monoterpenes Reviewed

    Kanaya, Y., R. Cao, S. Kato, Y. Miyakawa, Y. Kajii, H. Tanimoto, Y. Yokouchi, M. Mochida, K. Kawamura, H. Akimoto

    Journal of Geophysical Research   Vol. 112   page: D11308, doi:10.1029/2006JD007987   2007.6

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  37. Dependence of CCN activity of less-volatile particles on the amount of coating observed in Tokyo Reviewed

    Kuwata, M., Y. Kondo, M. Mochida, N. Takegawa, K. Kawamura

    Journal of Geophysical Research   Vol. 112   page: D11207, doi:10.1029/2006JD007758   2007.6

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  38. Mass spectral evidence that small changes in composition caused by oxidative aging processes after aerosol CCN properties Reviewed

    Shilling, J. E., S. M. King, M. Mochida, D. R. Worsnop, and S. T. Martin

    The Journal of Physical Chemistry A   Vol. 111   page: 3358-3368   2007.5

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  39. Time-resolved measurements of water-soluble organic carbon in Tokyo Reviewed

    Miyazaki, Y., Y. Kondo, N. Takegawa, Y. Komazaki, M. Fukuda, K. Kawamura, M. Mochida, K. Okuzawa, and R. J. Weber

    Journal of Geophysical Research   Vol. 111   page: D23206, doi:10.1029/2006JD007125   2006.12

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    Language:English   Publishing type:Research paper (scientific journal)  

  40. Relationship between hygroscopicity and cloud condensation nuclei activity for urban aerosols in Tokyo Reviewed

    Mochida, M., M. Kuwata, T. Miyakawa, N. Takegawa, K. Kawamura, Y. Kondo

    Journal of Geophysical Research   Vol. 111   page: D23204, doi:10.1029/2005JD006980   2006.12

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  41. The relative importance of competing pathways for the formation of high-molecular-weight peroxides in the ozonolysis of organic aerosol particles Reviewed

    Mochida, M., Y. Katrib, J. T. Jayne, D. R. Worsnop, and S. T. Martin

    Atmospheric Chemistry and Physics   Vol. 6   page: 4851-4866   2006.10

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  42. Diurnal variations and vertical gradients of biogenic volatile and semi-volatile organic compounds at the Tomakomai larch forest station in Japan Reviewed

    Ieda, T., Y. Kitamori, M. Mochida, R. Hirata, T. Hirano, K. Inukai, Y. Fujinuma, K. Kawamura

      Vol. 58   page: 177-186   2006.7

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  43. Ozonolysis of mixed oleic-acid/stearic-acid particles: Reaction kinetics and chemical morphology Reviewed

    Katrib, Y., G. Biskos, P. R. Buseck, P. Davidovits, J. T. Jayne, M. Mochida, M. E. Wise, D. R. Worsnop, and S. T. Martin

    The Journal of Physical Chemistry A   Vol. 109   page: 10,910-10,919   2005.12

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  44. Hygroscopic properties of levoglucosan and related organic compounds characteristic to biomass burning aerosol particles Reviewed

    Mochida, M., K. Kawamura

    Journal of Geophysical Research   Vol. 109   page: D21202, doi:10.1029/2004JD004962   2004.11

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  45. Composition and major sources of organic compounds of aerosol particulate matter sampled during the ACE-Asia campaign Reviewed

    Simoneit, B. R. T., M. Kobayashi, M. Mochida, K. Kawamura, M. Lee, H.-J. Lim, B. J. Turpin, Y. Komazaki

    Journal of Geophysical Research   Vol. 109   page: D19S10, doi:10.1029/2004JD004598   2004.9

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  46. Aerosol particles collected on aircraft flights over the northwestern Pacific region during the ACE-Asia campaign: Composition and major sources of the organic compounds Reviewed

    Simoneit, B. R. T., M. Kobayashi, M. Mochida, K. Kawamura, B. J. Huebert

    Journal of Geophysical Research   Vol. 109   page: D19S09, doi:10.1029/2004JD004565   2004.9

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  47. High abundance of gaseous and particulate 4-oxopentanal in the forestal atmosphere Reviewed

    Matsunaga, S., M. Mochida, K. Kawamura

    Chemosphere   Vol. 55   page: 1143-1147   2004.5

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  48. Variation on the atmospheric concentrations of biogenic carbonyl compounds and their removal processes in the northern forest at Moshiri, Hokkaido Island in Japan Reviewed

    Matsunaga, S., M. Mochida, K. Kawamura

    Journal of Geophysical Research   Vol. 109   page: D04302, doi:10.1029/2003JD004100   2004.2

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Books 1

  1. 大気環境の事典(大気環境学会編)

    持田 陸宏(担当範囲)( Role: Contributor ,  有機粒子の生成)

    朝倉書店  2019 

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    Responsible for pages:2   Language:Japanese Book type:Dictionary, encyclopedia

Presentations 5

  1. ISEE母子里観測所を利用する大気エアロゾル・ガス観測拠点の整備

    持田陸宏、大畑祥、河村公隆

    R2年度 陸別ユーザーズミーティング  2021.3.25 

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    Event date: 2021.3

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:オンライン開催  

  2. 春季プレブルーム期の西部北太平洋亜寒帯域におけるエアロゾル粒径分布およびCCN活性

    川名華織, 宮﨑雄三, 大森裕子, 谷本浩志, 鏡味沙良, 鈴木光次, 山下洋平, 西岡純, Yange Deng, 矢井ひかり, 持田陸宏

    第25回大気化学討論会  2020.11.13 

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    Event date: 2020.11

    Presentation type:Oral presentation (general)  

  3. Sources and characteristics of HULIS and other organic aerosol components in Beijing: Results from offline-AMS and FT-IR analyses International conference

    Zhou, R.C., Chen, Q.C., Chen, J., Fu, P.Q., Deng, Y.G., Vodicka, P., Deshmukh, D.K., Kawamura, K., Mochida, M.

    Goldschmidt Virtual 2020 

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    Event date: 2020.7

    Presentation type:Poster presentation  

  4. Assessment of the role of saltingout effect on the hygroscopicity of urban atmospheric aerosol International conference

    Phuong Nguyet Phung, Michihiro Mochida, Sho Ohata, Yuzo Miyazaki, Eri Tachibana

    JpGU – AGU Joint Meeting 2020:Virtual  

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    Event date: 2020.7

    Presentation type:Poster presentation  

  5. Comparison of compositional characteristics of aerosol and rainwater samples collected in Nagoya International conference

    JpGU – AGU Joint Meeting 2020:Virtual  

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    Event date: 2020.7

    Presentation type:Poster presentation  

Research Project for Joint Research, Competitive Funding, etc. 1

  1. 固相抽出法に基づく大気有機エアロゾルの組成・吸湿性の解析

    2013.11 - 2014.10

    国内共同研究 

KAKENHI (Grants-in-Aid for Scientific Research) 12

  1. 植生-エアロゾル-気候間の相互作用解明に向けた欧州北方林エアロゾルの吸湿性解析

    Grant number:19KK0265  2019.10 - 2023.3

    国際共同研究加速基金(国際共同研究強化(B))

    持田 陸宏

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    Authorship:Principal investigator 

    Grant amount:\18200000 ( Direct Cost: \14000000 、 Indirect Cost:\4200000 )

    陸域植生から大気に放出される揮発性有機化合物の一部は、光化学反応により生物起源有機エアロゾル(BSOA)となり、雲凝結核としての働きなどにより放射収支に関与し、気候ひいては陸域植生に影響を及ぼすというフィードバック機構を形作ると指摘されている。しかし、エアロゾルの放射影響に関わる有機エアロゾルの吸湿性の推定値には大きな幅があり、BSOAの吸湿性や、その雲粒生成への寄与には大きな不確かさがある。そこで本研究では、北方森林圏を対象としてBSOAの吸湿性とその全エアロゾルの吸湿性に対する寄与を定量する。そして、北方林におけるBSOAの放射への寄与を評価し、上記のフィードバック機構について考察する。
    本研究では、フィンランドのヒューティアラ森林フィールドステーションにおいて大気エアロゾルの採取を行い、その化学組成と吸湿性を解析することで、植生由来の揮発性有機化合物から生成する生物起源二次有機エアロゾル(BSOA)の吸湿性や全エアロゾルの吸湿性に対するBSOAの寄与を定量すること、さらにはBSOAの放射収支への影響の評価や、BSOAが気候、ひいては陸域植生に及ぼすフィードバックを考察することを目標としている。エアロゾルの吸湿性の情報から放射収支への影響を議論する上では、エアロゾルに含まれる界面活性物質による粒子表面張力の低下が雲凝結核能力に及ぼす影響が考慮の対象となり、今年度、国内(名古屋)で採取された大気エアロゾル試料を用いて、この表面張力低下の現象について検討した。具体的には、水で抽出した大気エアロゾル成分の水溶液や硫酸アンモニウムを加えたエアロゾル抽出物の水溶液に対して、懸滴法により表面張力の測定を行い、硫酸アンモニウム・界面活性物質の濃度と表面張力の関係についてデータを得た。この実験結果は、大気エアロゾルの雲凝結核活性の評価において塩析効果をどのように取り扱うかを判断する上で、参考になると考えられる。
    なお、研究代表者の持田は、3月にヘルシンキ大学およびヒューティアラ森林フィールドステーションを訪問することを予定していたが、新型コロナウイルスの感染拡大の問題が発生したため、今年度の訪問を中止した。
    新型コロナウイルスの感染拡大により、研究代表者によるヘルシンキ大学訪問を中止することとなり、ヘルシンキ大学のヒューティアラ森林フィールドステーションにおける観測研究について詳細を議論するには至らなかった。
    新型コロナウィルスの感染拡大のため、ヒューティアラ森林フィールドステーションにおける大気エアロゾル採取の日程調整に至っていない。感染の状況が落ち着いた場合には、試料採取の詳細について相談を進めたい。今後の状況によっては、当初検討していた令和2年度の試料採取を見送り、令和3年度以降の採取に基づいて研究を進めることを検討する可能性がある。

  2. Deepening the quantitative understanding of the hygroscopicity of atmospheric organic aerosol: Its relationship to chemical structures and sources

    Grant number:19H04253  2019.4 - 2022.3

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    Authorship:Principal investigator 

    Grant amount:\17290000 ( Direct Cost: \13300000 、 Indirect Cost:\3990000 )

  3. Relationship between the mixing state of atmospheric aerosol particles and their lung deposition: Analysis toward next-generation assessments of the health effects

    Grant number:18K19852  2018.6 - 2020.3

    Grant-in-Aid for Challenging Research (Exploratory)

    Mochida Michihiro

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    Authorship:Principal investigator 

    Grant amount:\6240000 ( Direct Cost: \4800000 、 Indirect Cost:\1440000 )

    By utilizing the measurement data of the hygroscopic growth of atmospheric aerosols in Nagoya in September 2009, the respiratory deposition of atmospheric aerosol particles that a person inhaled was analyzed. The characteristics of the deposition of aerosol particles in the respiratory tract during the period was obtained based on the distributions of aerosol particles as a function of the dry diameter and hygroscopicity. Further, the importance of the consideration of the external mixing state of aerosols during the period was assessed. The influence of the consideration of time evolution on the calculation of the deposition, and the representation of the results from the analysis were studied.

  4. Origin and formation mechanisms of organic nitrogen aerosols derived from biogenic terpenes

    Grant number:16H02931  2016.4 - 2019.3

    Miyazaki Yuzo

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    Authorship:Coinvestigator(s) 

    We aimed to elucidate the origin and formation processes of atmospheric water-soluble organic nitrogen (WSON) aerosols in forest environment. We found that aerosol liquid water content, primarily driven by anthropogenic sulfate, promotes aqueous reactions of reactive nitrogen and biogenic organic carbon to be the dominant formation processes of WSON, particularly during nighttime.

  5. Quantification of radicals and reactive oxygen species contained in atmospheric aerosol particles

    Grant number:16K12582  2016.4 - 2019.3

    Shiraiwa Manabu

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    Authorship:Coinvestigator(s) 

    Atmospheric aerosols particles play an important role in adverse health effects. Respiratory deposition of ambient particulate matter and their interactions with lung antioxidants can lead to the formation of reactive oxygen species (ROS) that may contribute to oxidative stress. In this project we measured ROS contained in ambient particles collected in an urban air in Nagoya, Japan, using a cascade impactor. Applying electron paramagnetic resonance spectrometry, we detected substantial amounts of environmentally persistent free radicals in collected particles. For detection of ROS we applied a spin counting method. Other atmospheric pollutants were also measured and we found that stable radicals and ozone anti-correlated. In summer 2017, another particle sampling has been conducted in a forest site in Wakayama. While concentrations of free radicals were under detection limit, we observed that particles generate ROS in water.

  6. 森林域で生成する生物起源二次有機エアロゾルの吸湿性・光学特性の解明

    2014.4

    科学研究費補助金  基盤研究(B)

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    Authorship:Principal investigator 

  7. 水晶振動子マイクロバランス法を用いる大気有機エアロゾル成分の有機ガス吸収の解析

    2014.4

    科学研究費補助金  挑戦的萌芽研究

  8. 外部混合状態を考慮した大気エアロゾルの特性研究への新展開

    2008.4 - 2013

    科学研究費補助金  若手研究(S),課題番号:20671001

    持田 陸宏

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    Authorship:Principal investigator 

  9. 東アジアおよび南アジアにおける有機エアロゾルの化学組成、空間分布および吸湿特性

    2007 - 2010

    科学研究費補助金  基盤研究(A)

    河村公隆

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    Authorship:Coinvestigator(s) 

  10. 海洋生物起源エアロゾル粒子の吸湿特性および雲凝結核能力の同時計測

    2007 - 2008

    科学研究費補助金  特定領域研究(公募,A01),課題番号:19030008

    持田 陸宏

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    Authorship:Principal investigator 

  11. 熱拡散チェンバ氷晶計を用いた有機物粒子の雲過程における氷晶形成能の評価

    2006 - 2008

    科学研究費補助金  若手研究(A),課題番号:18684031

    持田 陸宏

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    Authorship:Principal investigator 

  12. 大気有機エアロゾル粒子の表面張力測定

    2006 - 2007

    科学研究費補助金  萌芽研究,課題番号:18651001

    持田 陸宏

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    Authorship:Principal investigator 

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Teaching Experience (On-campus) 29

  1. 大気エアロゾル科学

    2020

  2. 地球水循環科学セミナー

    2020

  3. 太陽地球系科学

    2020

  4. 地球学I

    2020

  5. 地球水循環科学セミナー

    2019

  6. 大気エアロゾル科学

    2019

  7. 地球水循環科学セミナー

    2018

  8. 大気エアロゾル科学

    2018

  9. 気候科学セミナー

    2017

  10. 基礎セミナーB

    2017

  11. 大気エアロゾル科学

    2017

  12. 基礎セミナーB

    2016

  13. 大気エアロゾル科学

    2016

  14. 気候科学セミナー

    2016

  15. 基礎セミナーB

    2015

  16. 大気エアロゾル科学

    2015

  17. 気候科学セミナー

    2015

  18. 気候科学セミナー

    2014

  19. 大気エアロゾル科学

    2014

  20. 基礎セミナーB

    2014

  21. 大気エアロゾル科学

    2013

  22. 気候科学セミナー

    2013

  23. 基礎セミナーB

    2013

  24. 気候科学セミナー

    2012

  25. 大気エアロゾル科学

    2012

  26. 基礎セミナーB

    2012

  27. 地球惑星科学セミナーI

    2011

  28. 大気エアロゾル科学

    2011

  29. 気候科学セミナー

    2011

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