Masanao Kadowaki

Profile Information

Affiliation: Japan Atomic Energy Agency

Degree: 博士（理学）(東京大学)

J-GLOBAL ID: 202101002154299048
researchmap Member ID: R000017289

Committee Memberships

Jul, 2021 - Jun, 2023

論文誌編集委員, 日本原子力学会
Apr, 2021 - Jun, 2023

学会誌編集委員, 日本原子力学会

Papers

Application of Bayesian machine learning for estimation of uncertainty in forecasted plume directions by atmospheric dispersion simulations

Kadowaki Masanao, Nagai Haruyasu, Yoshida Toshiya*, Terada Hiroaki, Tsuzuki Katsunori, Sawa Hiroki*

Journal of Nuclear Science and Technology, 60(10) 1194-1207, Oct, 2023 Peer-reviewed
Dependency of the source term estimation method for radionuclides released into the atmosphere on the available environmental monitoring data and its applicability to real-time source term estimation

Terada Hiroaki, Nagai Haruyasu, Kadowaki Masanao, Tsuzuki Katsunori

Journal of Nuclear Science and Technology, 60(8) 980-1001, Aug, 2023 Peer-reviewed
Dependence of column ozone on future ODSs and GHGs in the variability of 500-ensemble members

Akiyoshi Hideharu*, Kadowaki Masanao, Yamashita Yosuke*, Nagatomo Toshiharu*

Scientific Reports (Internet), 13 320\_1-320\_12, Jan, 2023 Peer-reviewed
Validity of the source term for the Fukushima Dai-ichi Nuclear Power Station accident estimated using local-scale atmospheric dispersion simulations to reproduce the large-scale atmospheric dispersion of $^{137}$Cs

Kadowaki Masanao, Furuno Akiko, Nagai Haruyasu, Kawamura Hideyuki, Terada Hiroaki, Tsuzuki Katsunori, El-Asaad H.

Journal of Environmental Radioactivity, 237 106704\_1-106704\_18, Oct, 2021 Peer-reviewed
Toward development of a framework for prediction system of local-scale atmospheric dispersion based on a coupling of LES-database and on-site meteorological observation

Nakayama Hiromasa, Yoshida Toshiya, Terada Hiroaki, Kadowaki Masanao

Atmosphere (Internet), 12(7) 899\_1-899\_16, Jul, 2021 Peer-reviewed
Global budget of atmospheric $^{129}$I during 2007-2010 estimated by a chemical transport model: GEARN-FDM

Kadowaki Masanao, Terada Hiroaki, Nagai Haruyasu

Atmospheric Environment; X (Internet), 8 100098\_1-100098\_17, Dec, 2020 Peer-reviewed
A Model intercomparison of atmospheric $^{137}$Cs concentrations from the Fukushima Daiichi Nuclear Power Plant accident, phase III; Simulation with an identical source term and meteorological field at 1-km resolution

Sato Yosuke*, Sekiyama Tsuyoshi*, Fang S.*, Kajino Mizuo*, Qu\'erel A.*, Qu\'elo D.*, Kondo Hiroaki*, Terada Hiroaki, Kadowaki Masanao, Takigawa Masayuki* …

Atmospheric Environment; X (Internet), 7 100086\_1-100086\_12, Oct, 2020 Peer-reviewed
Atmospheric-dispersion database system that can immediately provide calculation results for various source term and meteorological conditions

Terada Hiroaki, Nagai Haruyasu, Tanaka Atsunori*, Tsuzuki Katsunori, Kadowaki Masanao

Journal of Nuclear Science and Technology, 57(6) 745-754, Jun, 2020 Peer-reviewed
Refinement of source term and atmospheric dispersion simulations of radionuclides during the Fukushima Daiichi Nuclear Power Station accident

Terada Hiroaki, Nagai Haruyasu, Tsuzuki Katsunori, Furuno Akiko, Kadowaki Masanao, Kakefuda Toyokazu*

Journal of Environmental Radioactivity, 213 106104\_1-106104\_13, Mar, 2020 Peer-reviewed
Analysis of the ozone reduction event over the southern tip of South America in November 2009

Akiyoshi Hideharu*, Kadowaki Masanao, Nakamura Haruna*, Sugita Takafumi*, Hirooka Toshihiko*, Harada Yayoi*, Mizuno Akira*

Journal of Geophysical Research; Atmospheres, 123(22) 12523-12542, Nov, 2018 Peer-reviewed
Impacts of anthropogenic source from the nuclear fuel reprocessing plants on global atmospheric iodine-129 cycle; A Model analysis

Kadowaki Masanao, Katata Genki*, Terada Hiroaki, Suzuki Takashi, Hasegawa Hidenao*, Akata Naofumi*, Kakiuchi Hideki*

Atmospheric Environment, 184 278-291, Jul, 2018 Peer-reviewed
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

Kadowaki Masanao, Nagai Haruyasu, Terada Hiroaki, Katata Genki*, Akari Shusaku*

Energy Procedia, 131 208-215, Dec, 2017 Peer-reviewed
Development of the Eulerian atmospheric transport model GEARN-FDM; Validation against the European tracer experiment

Kadowaki Masanao, Katata Genki, Terada Hiroaki, Nagai Haruyasu

Atmospheric Pollution Research, 8(2) 394-402, Mar, 2017 Peer-reviewed

Misc.

Development of a calculation method for atmospheric dispersion database that can immediately provide calculation results for any source term and period from hindcast to short-term forecast (Joint research)

Terada Hiroaki, Tsuzuki Katsunori, Kadowaki Masanao, Nagai Haruyasu, Tanaka Atsunori*

JAEA-Data/Code 2017-013, 31, Jan, 2018

Presentations

Study on the formation processes of air concentration of a radioactive material and dose rate distributions over hilly-terrains by LHADDAS

Nakayama Hiromasa, Satoh Daiki, Kadowaki Masanao

日本原子力学会2024年春の年会
Impact of a gas-to-particle conversion process on 131I atmospheric dispersion during the FDNPP accident

Kadowaki Masanao, Terada Hiroaki

日本原子力学会2023年秋の大会
Evaluation of applicability of a source term estimation method based on Bayesian inference to real-time source term estimation in emergency

Terada Hiroaki, Nagai Haruyasu, Tsuzuki Katsunori, Kadowaki Masanao

日本原子力学会2023年春の年会
Uncertainty estimation of plume directions in atmospheric dispersion predictions; Application of Bayesian machine learning

Kadowaki Masanao, Nagai Haruyasu, Yoshida Toshiya*, Terada Hiroaki, Tsuzuki Katsunori

日本原子力学会2023年春の年会
3rd model intercomparison projects of atmospheric dispersion model for $^{137}$Cs emitted from Fukushima Daiichi Nuclear Power Plant, and application of MIPs' results for usage in an emergency

Yamazawa Hiromi*, Sato Yosuke*, Sekiyama Tsuyoshi*, Kajino Mizuo*, Fang S.*, Qu\'erel A.*, Qu\'elo D.*, Kondo Hiroaki*, Terada Hiroaki, Kadowaki Masanao, Takigawa Masayuki*, Morino Yu*, Uchida Junya*, Goto Daisuke*, Nakamura Masataka*, Kiriyama Yusaku*

European Geosciences Union General Assembly 2021 (vEGU 2021)
Source term estimation of the radioactive materials released into the atmosphere during the Fukushima Daiichi Nuclear Power Station accident

Terada Hiroaki, Nagai Haruyasu, Tsuzuki Katsunori, Kadowaki Masanao

International Workshop on Model Intercomparison Project for Better Understandings of Present Status of Meso-scale Atmospheric Transport Models
Review of model intercomparison projects (MIPs) of atmospheric dispersion model for $^{137}$Cs emitted from Fukushima Daiichi Nuclear Power Plant; MIPs with identical source term and meteorological data

Sato Yosuke*, Takigawa Masayuki*, Sekiyama Tsuyoshi*, Kajino Mizuo*, Terada Hiroaki, Nagai Haruyasu, Kadowaki Masanao, Kondo Hiroaki*, Uchida Junya*, Goto Daisuke*, Qu\'erel A.*, Qu\'elo D.*, Mathieu A.*, Fang S.*, Morino Yu*, von Schoenberg P.*, Grahn H.*, Brannstr\"om N.*, Hirao Shigekazu*, Tsuruta Haruo*, Nakajima Teruyuki*, Yamazawa Hiromi*

Fukushima Dai-ichi and the Ocean; 10 years of study and insight
Development of a source term estimation method based on Bayesian inference with multi-scale atmospheric dispersion simulations

Terada Hiroaki, Nagai Haruyasu, Tsuzuki Katsunori, Kadowaki Masanao, Furuno Akiko

日本原子力学会2020年秋の大会
Third model intercomparison project for $^{137}$Cs from the Fukushima Daiichi Nuclear Power Station Accident

Sato Yosuke*, Sekiyama Tsuyoshi*, Sheng F.*, Kajino Mizuo*, Qu\'elo D.*, Qu\'erel A.*, Kondo Hiroaki*, Terada Hiroaki, Kadowaki Masanao, Takigawa Masayuki*, Morino Yu*, Uchida Junya*, Goto Daisuke*, Yamazawa Hiromi*

日本気象学会2020年度春季大会
Intercomparison of atmospheric transport models using 1 km grid meteorological data for the Fukushima Daiichi Nuclear Power Plant Accident

Yamazawa Hiromi*, Sato Yosuke*, Sekiyama Tsuyoshi*, Kajino Mizuo*, Goto Daisuke*, Morino Yu*, Kondo Hiroaki*, Qu\'erel A.*, Fang S.*, Takigawa Masayuki*, Terada Hiroaki, Kadowaki Masanao, Uchida Junya*, Sato Yosuke*

European Geosciences Union General Assembly 2020
LES analysis on impact of the forest canopy arrangement on dry deposition

Nakayama Hiromasa, Kadowaki Masanao, Yoshida Toshiya

Joint International Conference on Supercomputing in Nuclear Applications + Monte Carlo 2020 (SNA + MC 2020)
An Estimate of the global budget of atmospheric iodine-129 during the 2000s with a global transport model

Kadowaki Masanao, Terada Hiroaki

American Geophysical Union 2019 Fall Meeting (AGU 2019)
Sophistication of dynamics evaluation method for harmful substances in the atmosphere

Yamazawa Hiromi*, Sato Yosuke*, Oura Yasuji*, Moriguchi Yuichi*, Terada Hiroaki, Furuno Akiko, Tsuzuki Katsunori, Kadowaki Masanao, Sekiyama Tsuyoshi*, Adachi Koji*, Goto Daisuke*, Morino Yu*, Tsuruta Haruo*

テクノ・フェア名大2019
Source term estimation of atmospheric discharge during the Fukushima Daiichi Nuclear Power Station accident by Bayesian inversion with multi-scale dispersion simulations

Terada Hiroaki, Nagai Haruyasu, Tsuzuki Katsunori, Furuno Akiko, Kadowaki Masanao

European Meteorological Society Annual Meeting 2019
Hemispheric atmospheric dispersion analysis of radionuclides released from the Fukushima Daiichi Nuclear Power Plant

Furuno Akiko, Terada Hiroaki, Tsuzuki Katsunori, Kadowaki Masanao, Nagai Haruyasu

CTBT: Science and Technology 2019 Conference (SnT 2019)
Development of a calculation method for atmospheric dispersion database that can immediately provide calculation results for any period and source term

Terada Hiroaki, Nagai Haruyasu, Tsuzuki Katsunori, Kadowaki Masanao

日本原子力学会2018年秋の大会
Atmospheric dispersion simulations for the assessment of radiological dose to the public due to the Fukushima Daiichi Nuclear Power Station accident

Nagai Haruyasu, Terada Hiroaki, Tsuzuki Katsunori, Furuno Akiko, Kadowaki Masanao, Kakefuda Toyokazu*

日本原子力学会2018年秋の大会
Numerical analysis of seasonal change of iodine-129 deposition in Japan using a global atmospheric iodine transport model

Kadowaki Masanao, Terada Hiroaki, Suzuki Takashi

2018 Joint 14th Quadrennial iCACGP Symposium and 15th IGAC Science Conference 2018 (iCACGP-IGAC 2018)
Overview of system for prediction of environmental emergency dose information SPEEDI and its worldwide version WSPEEDI

Furuno Akiko, Nagai Haruyasu, Terada Hiroaki, Tsuzuki Katsunori, Nakayama Hiromasa, Kadowaki Masanao

8th Vietnam-Japan Research \& HRD Forum on Nuclear Technology
Development of a global transport model for airborne iodine-129 including atmospheric photolysis and gas-particle conversion processes

Kadowaki Masanao, Katata Genki*, Terada Hiroaki, Suzuki Takashi, Hasegawa Hidenao*, Akata Naofumi*, Kakiuchi Hideki*

American Geophysical Union 2017 Fall Meeting (AGU 2017)

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