A model intercomparison of atmospheric 137Cs concentrations from the Fukushima Daiichi Nuclear Power Plant accident, phase III: Simulation with an identical source term and meteorological field at 1-km resolution
The third model intercomparison project (MIP) for investigating the atmospheric behavior of atmospheric caesium-137 (137Cs) emitted from Fukushima Daiichi Nuclear Power Plant (FDNPP) (3rd FDNPP-MIP), Japan, in March 2011, was conducted. A finer horizontal grid spacing (1 km) was used than in the pre...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-10-01
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| Series: | Atmospheric Environment: X |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590162120300253 |
| _version_ | 1811333895837188096 |
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| author | Yousuke Sato Tsuyoshi Thomas Sekiyama Sheng Fang Mizuo Kajino Arnaud Quérel Denis Quélo Hiroaki Kondo Hiroaki Terada Masanao Kadowaki Masayuki Takigawa Yu Morino Junya Uchida Daisuke Goto Hiromi Yamazawa |
| author_facet | Yousuke Sato Tsuyoshi Thomas Sekiyama Sheng Fang Mizuo Kajino Arnaud Quérel Denis Quélo Hiroaki Kondo Hiroaki Terada Masanao Kadowaki Masayuki Takigawa Yu Morino Junya Uchida Daisuke Goto Hiromi Yamazawa |
| author_sort | Yousuke Sato |
| collection | DOAJ |
| description | The third model intercomparison project (MIP) for investigating the atmospheric behavior of atmospheric caesium-137 (137Cs) emitted from Fukushima Daiichi Nuclear Power Plant (FDNPP) (3rd FDNPP-MIP), Japan, in March 2011, was conducted. A finer horizontal grid spacing (1 km) was used than in the previous FDNPP-MIP (2nd FDNPP-MIP, Sato et al., 2018; 3 km) to evaluate the models’ performance for high-concentration events measured near FDNPP. Nine of the models used in the 2nd FDNPP-MIP were also used in the 3rd FDNPP-MIP, and all models used identical source terms and meteorological fields. The performance of the models was evaluated through a comparison with observational data. Our analyses indicated that most of the observed high atmospheric 137Cs concentrations (plumes) were reasonably well simulated by the models, and the good performance of some models improved the performance of the multimodel, highlighting the advantage of using a multimodel ensemble. The analyses also confirmed that the use of a finer grid resolution resulted in the meteorological field near FDNPP being better reproduced in the 3rd FDNPP-MIP, and the performance of the models was better than that of the 2nd FDNPP MIP. The good representation of the wind field resulted in the reasonable simulation of the narrow distribution of high deposition amount to the northwest of FDNPP and the reduction of the overestimation in deposition amount over the area to the south of FDNPP compared to the 2nd FDNPP MIP. In contrast, the performance of the models in simulating plumes observed over the Nakadori area, the northern part of Gunma, and the Tokyo Metropolitan Area (TMA) was slightly worse than in the 2nd FDNPP-MIP. |
| first_indexed | 2024-04-13T16:59:42Z |
| format | Article |
| id | doaj.art-94e735160e6f4e97a7dcf015aa4ea2fe |
| institution | Directory Open Access Journal |
| issn | 2590-1621 |
| language | English |
| last_indexed | 2024-04-13T16:59:42Z |
| publishDate | 2020-10-01 |
| publisher | Elsevier |
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| series | Atmospheric Environment: X |
| spelling | doaj.art-94e735160e6f4e97a7dcf015aa4ea2fe2022-12-22T02:38:42ZengElsevierAtmospheric Environment: X2590-16212020-10-017100086A model intercomparison of atmospheric 137Cs concentrations from the Fukushima Daiichi Nuclear Power Plant accident, phase III: Simulation with an identical source term and meteorological field at 1-km resolutionYousuke Sato0Tsuyoshi Thomas Sekiyama1Sheng Fang2Mizuo Kajino3Arnaud Quérel4Denis Quélo5Hiroaki Kondo6Hiroaki Terada7Masanao Kadowaki8Masayuki Takigawa9Yu Morino10Junya Uchida11Daisuke Goto12Hiromi Yamazawa13Faculty of Science, Hokkaido University, Sapporo, Hokkaido, Japan; Corresponding author. Faculty of Science, Hokkaido University, Kita-10, Nishi-8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan.Meteorological Research Institute, Tsukuba, Ibaraki, JapanInstitute of Nuclear and New Energy Technology, Tsinghua University, Beijing, ChinaMeteorological Research Institute, Tsukuba, Ibaraki, JapanInstitut de Radioprotection et de Sûreté Nucléaire (IRSN), Fontenay-aux-Roses Cedex, FranceInstitut de Radioprotection et de Sûreté Nucléaire (IRSN), Fontenay-aux-Roses Cedex, FranceNational Institute of Advanced Industrial Science and Technology, Tsukuba, JapanJapan Atomic Energy Agency, Naka-Gun, Ibaraki, JapanJapan Atomic Energy Agency, Naka-Gun, Ibaraki, JapanJapan Agency for Marine-Earth Science and Technology, Yokohama, Kanagawa, JapanNational Institute for Environmental Studies, Tsukuba, Ibaraki, JapanNational Institute for Environmental Studies, Tsukuba, Ibaraki, JapanNational Institute for Environmental Studies, Tsukuba, Ibaraki, JapanDepartment of Applied Energy, Graduate School of Engineering, Nagoya University, Nagoya, Aichi, JapanThe third model intercomparison project (MIP) for investigating the atmospheric behavior of atmospheric caesium-137 (137Cs) emitted from Fukushima Daiichi Nuclear Power Plant (FDNPP) (3rd FDNPP-MIP), Japan, in March 2011, was conducted. A finer horizontal grid spacing (1 km) was used than in the previous FDNPP-MIP (2nd FDNPP-MIP, Sato et al., 2018; 3 km) to evaluate the models’ performance for high-concentration events measured near FDNPP. Nine of the models used in the 2nd FDNPP-MIP were also used in the 3rd FDNPP-MIP, and all models used identical source terms and meteorological fields. The performance of the models was evaluated through a comparison with observational data. Our analyses indicated that most of the observed high atmospheric 137Cs concentrations (plumes) were reasonably well simulated by the models, and the good performance of some models improved the performance of the multimodel, highlighting the advantage of using a multimodel ensemble. The analyses also confirmed that the use of a finer grid resolution resulted in the meteorological field near FDNPP being better reproduced in the 3rd FDNPP-MIP, and the performance of the models was better than that of the 2nd FDNPP MIP. The good representation of the wind field resulted in the reasonable simulation of the narrow distribution of high deposition amount to the northwest of FDNPP and the reduction of the overestimation in deposition amount over the area to the south of FDNPP compared to the 2nd FDNPP MIP. In contrast, the performance of the models in simulating plumes observed over the Nakadori area, the northern part of Gunma, and the Tokyo Metropolitan Area (TMA) was slightly worse than in the 2nd FDNPP-MIP.http://www.sciencedirect.com/science/article/pii/S2590162120300253Model intercomparison project for atmospheric137CsAtmospheric dispersion modelRadionuclide |
| spellingShingle | Yousuke Sato Tsuyoshi Thomas Sekiyama Sheng Fang Mizuo Kajino Arnaud Quérel Denis Quélo Hiroaki Kondo Hiroaki Terada Masanao Kadowaki Masayuki Takigawa Yu Morino Junya Uchida Daisuke Goto Hiromi Yamazawa A model intercomparison of atmospheric 137Cs concentrations from the Fukushima Daiichi Nuclear Power Plant accident, phase III: Simulation with an identical source term and meteorological field at 1-km resolution Atmospheric Environment: X Model intercomparison project for atmospheric137Cs Atmospheric dispersion model Radionuclide |
| title | A model intercomparison of atmospheric 137Cs concentrations from the Fukushima Daiichi Nuclear Power Plant accident, phase III: Simulation with an identical source term and meteorological field at 1-km resolution |
| title_full | A model intercomparison of atmospheric 137Cs concentrations from the Fukushima Daiichi Nuclear Power Plant accident, phase III: Simulation with an identical source term and meteorological field at 1-km resolution |
| title_fullStr | A model intercomparison of atmospheric 137Cs concentrations from the Fukushima Daiichi Nuclear Power Plant accident, phase III: Simulation with an identical source term and meteorological field at 1-km resolution |
| title_full_unstemmed | A model intercomparison of atmospheric 137Cs concentrations from the Fukushima Daiichi Nuclear Power Plant accident, phase III: Simulation with an identical source term and meteorological field at 1-km resolution |
| title_short | A model intercomparison of atmospheric 137Cs concentrations from the Fukushima Daiichi Nuclear Power Plant accident, phase III: Simulation with an identical source term and meteorological field at 1-km resolution |
| title_sort | model intercomparison of atmospheric 137cs concentrations from the fukushima daiichi nuclear power plant accident phase iii simulation with an identical source term and meteorological field at 1 km resolution |
| topic | Model intercomparison project for atmospheric137Cs Atmospheric dispersion model Radionuclide |
| url | http://www.sciencedirect.com/science/article/pii/S2590162120300253 |
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