研究者紹介

堅田 元喜

堅田 元喜

Genki Katata

主任研究員

研究分野

  • 移動現象論 大気陸域環境科学

プロフィール

学歴

2002年 日本大学理工学部航空宇宙工学科 卒業
2004年 京都大学大学院理学研究科修士課程気球惑星科学専攻 修了
2010年 京都大学 博士(理学)(論理博第1512号)

職歴

2004年~2005年 日本原子力研究所 環境動態研究グループ研究員
2005年~2016年 日本原子力研究開発機構 環境動態研究グループ 研究員(所属機関名変更)
2013年~2015年 日本学術振興会 海外特別研究員およびカールスルーエ工科大学 客員研究員
2017年~2020年3月 茨城大学 地球変動適応科学研究機関(ICAS)講師(平成28年度文部科学省卓越研究員)
2020年4月~2020年7月 茨城大学 地球・地域環境共創機構(GLEC)講師(所属機関名変更)
2020年8月~ 茨城大学 特命研究員

著作物

  • 大気環境の事典 2-29節 (朝倉書店・2019/09)

論文

  • T. Kubota, H. Kuroda, M. Watanabe, A. Takahashi, R. Nakazato, M. Tarui, S. Matsumoto, K. Nakagawa, Y. Numata, T. Ouchi, H. Hosoi, M. Nakagawa, R. Shinohara, M. Kajino, K. Fukushima, Y. Igarashi, N. Imamura, and G. Katata (2020) Role of advection in atmospheric ammonia: A case study at a Japanese lake basin influenced by agricultural ammonia sources, Atmos. Environ., in press.
  • G. Katata, K. Matsuda, A. Sorimachi, M. Kajino, and K. Takagi (2020) Aerosol dynamics and gas-particle conversion in dry deposition of inorganic reactive nitrogen in a temperate forest, Atmos. Chem. Phys., 20, 4933-4949.
  • G. Katata, R. Grote, M. Mauder, M.J. Zeeman, and M. Ota (2020) Wintertime grassland dynamics may influence below-ground biomass under climate change: a model analysis, Biogeosci., 17, 1071-1085.
  • N. Imamura, G. Katata, M. Kajino, M. Kobayashi, Y. Itoh, and A. Akama (2020) Fogwater deposition of radiocesium in the forested mountains of East Japan during the Fukushima Daiichi Nuclear Power Plant accident: A key process in regional radioactive contamination, Atmos. Environ., 224, 11739.
  • R. Wada, M. Ueyama, A. Tani, T. Mochizuki, Y. Miyazaki, K. Kawamura, Y. Takahashi, N. Saigusa, S. Takanashi, T. Miyama, T. Nakano, S. Yonemura Y. Matsumi, and G. Katata (2019) Observation of vertical profiles of NOx, O3, and VOCs to estimate their sources and sinks by inverse modelling in a Japanese larch forest, J. Agr. Meteorol., 76, 1-10.
  • S. Nakahara, K. Takagi, A. Sorimachi, G. Katata, and K. Matsuda (2019) Enhancement of dry deposition of PM2.5 nitrate in a cool-temperate forest, Atmos. Environ., 212, 136-141.
  • M. Kajino, T.T. Sekiyama, Y. Igarashi, G. Katata, M. Sawada, K. Adachi, Y. Zaizen, H. Tsuruta, and T. Nakajima (2019) Deposition and dispersion of radio‐cesium released due to the Fukushima nuclear accident: Sensitivity to meteorological models and physical modules, J. Geophys. Res. Atmos., 124, 1823–1845.
  • M. Kadowaki, G. Katata, H. Terada, T. Suzuki, H. Hasegawa, N. Akata, and H. Kakiuchi (2018) Impacts of anthropogenic source from the nuclear fuel reprocessing plants on global atmospheric iodine-129 cycle: A model analysis, Atmos. Environ., 184, 278-291.
  • Y. Sanada, G. Katata, N. Kaneyasu, C. Nakanishi, Y. Urabe, and Y. Nishizawa (2018) Altitudinal characteristics of atmospheric deposition of aerosols in mountainous regions: Lessons from the Fukushima Daiichi Nuclear Power Station accident, Sci. Total Environ., 618, 881-890.
  • M. Kadowaki, H. Nagai, H. Terada, G. Katata, and S. Akari (2017) Improvement of atmospheric dispersion simulation using an advanced meteorological data assimilation method to reconstruct the spatiotemporal distribution of radioactive materials released during the Fukushima Daiichi Nuclear Power Station accident, Energy Procedia, 131C, 208-215.
  • M. Kadowaki, G. Katata, H. Terada, and H. Nagai (2017) Development of the Eulerian atmospheric transport model GEARN-FDM: Validation against the European tracer experiment. Atmos. Poll. Res., 8, 394-402.
  • E. Quansah, G. Katata, M. Mauder, T. Annor, L.K. Amekudzi, J. Bliefernicht, D. Heinzeller, A.A. Balogun, and H. Kunstmann (2017) Numerical Simulation of Surface Energy and Water Balances over a Semiarid Grassland Ecosystem in the West African Savanna. Adv. Meteorol., 2017, 6258180.
  • A.G. Duarte, G. Katata, Y. Hoshika, M. Hossain, J. Kreuzwiesser, A. Arneth, and N.K. Ruehr (2016) Immediate and potential long-term effects of consecutive heat waves on the photosynthetic performance and water balance in Douglas-fir. J. Plant. Physiol., 205, 57-66.
  • Chino, M., H. Terada, H. Nagai, G. Katata, S. Mikami, T. Torii, K. Saito, and Y. Nishizawa (2016) Utilization of 134Cs/137Cs in the environment to identify the reactor units that caused atmospheric releases during the Fukushima Daiichi accident. Sci. Rep., 6, 31376.
  • M. Ota, G. Katata, H. Nagai, and H. Terada (2016) Impacts of C-uptake by plants on the spatial distribution of 14C accumulated in vegetation around a nuclear facility – Application of a sophisticated land surface 14C model to the Rokkasho reprocessing plant, Japan. J. Environ. Radioact., 162-163, 189-204.
  • A.R. Desai, G. Wohlfahrt, M.J. Zeeman, G. Katata, W. Eugster, L. Montagnani, D. Gianelle, M. Mauder, and H.-P. Schmid (2016) Ecosystem biogeochemistry in the north and central Alps responds strongly to global circulation changes and Foehn frequency. Environ. Res. Lett., 11, 024013.
  • H. Nagai, H. Terada, M. Chino, G. Katata, S. Mikami, and K. Saito (2015) Source term estimation for the Fukushima Daiichi Nuclear power station accident by combined analysis of environmental monitoring and plant data through atmospheric dispersion simulation. Proceedings on the 16th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-16), 4044-4052.
  • Y. Hoshika, G. Katata, M. Deushi, M. Watanabe, T. Koike, and E. Paoletti (2015) Ozone-induced stomatal sluggishness changes carbon and water balance of temperate deciduous forests. Sci. Rep, 5, 9871.
  • G. Katata, M. Chino, T. Kobayashi, H. Terada, M. Ota, H. Nagai, M. Kajino, R. Draxler, M.C. Hort, A. Malo, T. Torii, and Y. Sanada(2015) Detailed source term estimation of the atmospheric release for the Fukushima Daiichi Nuclear Power Station accident by coupling simulations of atmospheric dispersion model with improved deposition scheme and oceanic dispersion model. Atmos. Chem. Phys., 15, 1029-1070.
  • G. Katata (2014) Fogwater deposition modeling for terrestrial ecosystems: A review of developments and measurements. J. Geophys. Res., 119, 8137-8159 (review paper).
  • T. Yamaguchi, G. Katata, I. Noguchi, S. Sakai, Y. Watanabe, Y. Uematsu, and M. Furutani (2014) Long-term observation of fog chemistry and estimation of fog water and nitrogen input via fog water deposition at a mountainous site in Hokkaido, Japan. Atmos. Res., 151, 82-92.
  • G. Katata, M. Kajino, K. Matsuda, A. Takahashi, and K. Nakaya (2014) A numerical study of the effects of aerosol hygroscopic properties to dry deposition on a broad-leaved forest. Atmos. Environ., 97, 501-510.
  • G. Katata, K. Hayashi, K. Ono, H. Nagai, A. Miyata, and M. Mano (2013) Coupling atmospheric ammonia exchange process over a rice paddy field with a multi-layer atmosphere-soil-vegetation model. Agr. Forest Meteorol., 180, 1-21.
  • G. Katata, T. Yamaguchi, H. Sato, Y. Watanabe, I. Noguchi, H. Hara, and H. Nagai (2013) Aerosol deposition and behavior on leaves in cool-temperate deciduous forests. Part 3: Estimation of fog deposition onto cool-temperate deciduous forest by the inferential method. Asian J. Atmos. Environ., 7, 17-24.
  • Y. Watanabe, T. Yamaguchi, G. Katata, and I. Noguchi (2013) Aerosol deposition and behavior on leaves in cool-temperate deciduous forests. Part 1: A preliminary study of the effect of fog deposition on behavior of particles deposited on the leaf surfaces by microscopic observation and leaf-washing technique. Asian J. Atmos. Environ., 7, 1-7.
  • T. Yamaguchi, I. Noguchi, Y. Watanabe, G. Katata, H. Sato, and H. Hara (2013) Aerosol deposition and behavior on leaves in cool-temperate deciduous forests. Part 2: Characteristics of fog water chemistry and fog deposition in northern Japan. Asian J. Atmos. Environ., 7, 8-16.
  • M. Chino , H. Terada, G. Katata, H. Nagai, H. Nakayama, H. Yamazawa, S. Hirao, T. Ohara, M. Takigawa, H. Hayami, and M. Aoyama (2012) Reconstruction of atmospheric releases of 131I and 137Cs by the Fukushima Daiichi Nuclear Power Plant Accident. Proceedings on the first NIRS symposium on “Reconstruction of Early Internal Dose in the TEPCO Fukushima Daiichi Nuclear Power Station Accident”, 127-136.
  • M. Kajino, Y. Inomata, K. Sato, H. Ueda, Z. Han, J. An, G. Katata, M. Deushi, T. Maki, N. Oshima, J. Kurokawa, T. Ohara, A. Takami, and S. Hatakeyama (2012) Development of an aerosol chemical transport model RAQM2 and predictions of Northeast Asian aerosol mass, size, chemistry, and mixing type. Atmos. Chem. Phys., 12, 11833-11856.
  • G. Katata, H. Terada, H. Nagai, and M. Chino (2012) Numerical reconstruction of high dose rate zones due to the Fukushima Dai-ichi Nuclear Power Plant accident. J. Environ. Radioact., 111, 2-12.
  • G. Katata, M. Ota, H. Terada, M. Chino, and H. Nagai (2012) Atmospheric discharge and dispersion of radionuclides during the Fukushima Dai-ichi Nuclear Power Plant accident. Part I: Source term estimation and local-scale atmospheric dispersion in early phase of the accident. J. Environ. Radioact., 109, 103-113.
  • H. Nagai, M. Chino, H. Terada, and G. Katata (2012) Atmospheric dispersion simulations of radioactive materials discharged from the Fukushima Daiichi Nuclear Power Plant due to accident: Consideration of deposition process. Proceedings on the first NIRS symposium on “Reconstruction of Early Internal Dose in the TEPCO Fukushima Daiichi Nuclear Power Station Accident”, 137-150.
  • H. Terada, G. Katata, M. Chino, and H. Nagai (2012) Atmospheric discharge and dispersion of radionuclides during the Fukushima Dai-ichi Nuclear Power Plant accident. Part II: verification of the source term and analysis of regional-scale atmospheric dispersion. J. Environ. Radioact., 112, 141-154.
  • M. Chino, H. Nakayama, H. Nagai, H. Terada, G. Katata, and H. Yamazawa (2011) Preliminary estimation of release amounts of 131I and 137Cs accidentally discharged from the Fukushima Daiichi Nuclear Power Plant into the atmosphere. J. Nucl. Sci. Technol., 48, 1129-1134.
  • G. Katata, M. Kajino, T. Hiraki, M. Aikawa, T. Kobayashi, and H. Nagai (2011) A method for simple and accurate estimation of fog deposition in a mountain forest using a meteorological model. J. Geophys. Res., 116, D20102.
  • G. Katata, H. Nagai, L. Zhang, A. Held, D. Serça, and O. Klemm (2011) Development of an atmosphere-soil-vegetation model for investigation of radioactive materials transport in the terrestrial biosphere. Prog. Nucl. Sci. Technol., 2, 530-537.
  • G. Katata, H. Nagai, M. Kajino, H. Ueda, and Y. Hozumi (2010) Numerical study of fog deposition on vegetation for atmosphere-land interactions in semi-arid and arid regions. Agr. Forest Meteorol., 150, 340-353.
  • G. Katata, C.M. Regalado, A. Ritter, and H. Nagai (2009) Application of a land surface model that includes fog deposition over a tree heath–laurel forest in Garajonay national park (La Gomera, Spain). Estudios de la zona no saturada del Suelo (Studies of the Vadose Zone), ZNS’09. IX, 393-400 (available online).
  • G. Katata, H. Nagai, T. Wrzesinsky, O. Klemm, W. Eugster, and R. Burkard (2008) Development of a land surface model including cloud water deposition on vegetation. J. Appl. Meteorol. Climatol., 47, 2129-2146.
  • G. Katata, H. Nagai, and H. Ueda (2007) Numerical study of fog occurrence and fog water deposition on the vegetation at a semi-arid coastal area in Saudi Arabia. Proceedings of the 4th International Conference on Fog, Fog Collection and Dew, 33-36.
  • G. Katata, H. Nagai, H. Ueda, N. Agam, and P.R. Berliner (2007) Development of a land surface model including evaporation and adsorption processes in the soil for the land-air exchange in arid regions. J. Hydrometeorol., 8, 1307-1324.
  • 堅田元喜,永井晴康(2010)植生への粒子沈着モデルの研究動向とその課題,エアロゾル研究,25, 323-330
  • 渡邊 陽子,堅田 元喜(4番目)ほか(2013) 北海道の大気中エアロゾル成分と樹木個葉に付着したエアロゾル粒子の観察,北森研,61, 85-86
  • 渡邊 陽子,堅田 元喜(3番目)ほか(2014) 冷温帯林におけるエアロゾル動態および樹木への沈着・洗浄除去状態の把握,エアロゾル研究,29, 176-182
  • 堅田元喜,村尾直人(2014)エアロゾルによる植物影響評価のための精緻な陸面モデルの領域,エアロゾル研究,29, 168-175
  • 堅田元喜,茅野政道(2014)福島第一原子力発電所事故における放射性核種の大気放出・拡散・沈着,エアロゾル研究,32, 237-243
  • 坂本泰一,堅田元喜(5番目)ほか(2018)デニューダ・緩和渦集積法を用いたフラックス観測による東京郊外の森林におけるPM2.5硝酸塩および硝酸ガスの沈着速度,大気環境学会誌,53,136-143
  • 堅田元喜(2018)微気候と図書館の環境,LISN,176,5-8
  • 眞田幸尚,堅田元喜ほか(2018)山地の雲や霧がもたらした放射能汚染を解明-航空機モニタリングと数値シミュレーションによる解析-,Isotope News,759,18-21
  • 斉藤和之,堅田元喜(14番目)ほか(2018)北極陸域モデル相互比較GTMIPの熱・水収支解析,雪氷,80,159-174
  • 久保田智大,堅田元喜ほか(2019)牛舎からのアンモニア揮散が近傍のヒノキ樹木への窒素沈着に及ぼす影響,大気環境学会誌,54,43-54
  • 南光太郎,堅田元喜ほか 温帯落葉広葉樹林から放出されたバイオエアロゾルの輸送過程の数値解析,エアロゾル研究,印刷中

その他

受賞歴

  • 2012年 第44回日本原子力学会論文賞
  • 2014年 日本原子力研究開発機構 理事長表彰 業務品質改善賞
  • 2014年 日本原子力研究開発機構 理事長表彰 研究開発功績賞特賞
  • 2015年 平成27年度科学技術分野の文部科学大臣表彰 科学技術賞
  • 2018年 Journal of Nuclear Science and Technology Most Cited Article Award
  • 2019年 大気環境学会 大気環境学会論文賞

委員

  • 2017年〜 公益財団法人原子力安全協会, アジア原子力協力フォーラム(FNCA)プロジェクト運営委員
  • 2016年〜 公益社団法人大気環境学会, Asian Journal of Atmospheric Environment (AJAE) 委員会編集委員
  • 2016年〜 International Fog and Dew Association (IFDA), Scientific board member

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