Katsunori Tsuzuki

Profile Information

Affiliation: Japan Atomic Energy Agency

J-GLOBAL ID: 202101006653686201
researchmap Member ID: R000017287

Research Areas

Environmental science/Agricultural science / Environmental dynamics /

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
Evaluation of uncertainties derived from meteorological forecast inputs in plume directions predicted by atmospheric dispersion simulations

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

Journal of Nuclear Science and Technology, 59(1) 55-66, Jan, 2022 Peer-reviewed
Spatial variations in radiocesium deposition and litter-soil distribution in a mountainous forest catchment affected by the Fukushima nuclear accident

Atarashi-Andoh Mariko, Koarashi Jun, Tsuzuki Katsunori, Takeuchi Erina, Nishimura Shusaku, Muto Kotomi*, Matsunaga Takeshi*

Journal of Environmental Radioactivity, 238-239 106725\_1-106725\_8, Nov, 2021 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
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
Sources of $^{137}$Cs fluvial export from a forest catchment evaluated by stable carbon and nitrogen isotopic characterization of organic matter

Muto Kotomi, Atarashi-Andoh Mariko, Koarashi Jun, Takeuchi Erina, Nishimura Shusaku, Tsuzuki Katsunori, Matsunaga Takeshi*

Journal of Radioanalytical and Nuclear Chemistry, 314(1) 403-411, Oct, 2017 Peer-reviewed
Updating source term and atmospheric dispersion simulations for the dose reconstruction in Fukushima Daiichi Nuclear Power Station accident

Nagai Haruyasu, Terada Hiroaki, Tsuzuki Katsunori, Katata Genki, Ota Masakazu, Furuno Akiko, Akari Shusaku

EPJ Web of Conferences, 153 08012\_1-08012\_7, Sep, 2017 Peer-reviewed
Year-round variations in the fluvial transport load of particulate $^{137}$Cs in a forested catchment affected by the Fukushima Daiichi Nuclear Power Plant accident

Matsunaga Takeshi, Nakanishi Takahiro, Atarashi-Andoh Mariko, Takeuchi Erina, Muto Kotomi, Tsuzuki Katsunori, Nishimura Shusaku, Koarashi Jun, Otosaka Shigeyoshi, Sato Tsutomu* …

Journal of Radioanalytical and Nuclear Chemistry, 310(2) 679-693, Nov, 2016 Peer-reviewed
Fluvial discharges of particulate and dissolved radiocesium from a forest and its monthly trend

Muto Kotomi, Atarashi-Andoh Mariko, Takeuchi Erina, Nishimura Shusaku, Koarashi Jun, Tsuzuki Katsunori, Nakanishi Takahiro, Matsunaga Takeshi

KEK Proceedings 2015-4, 252-257, Nov, 2015 Peer-reviewed
Catchment-scale distribution of radiocesium air dose rate in a mountainous deciduous forest and its relation to topography

Atarashi-Andoh Mariko, Koarashi Jun, Takeuchi Erina, Tsuzuki Katsunori, Nishimura Shusaku, Matsunaga Takeshi

Journal of Environmental Radioactivity, 147 1-7, Sep, 2015 Peer-reviewed
Increase in rare earth element concentrations controlled by dissolved organic matter in river water during rainfall events in a temperate, small forested catchment

Matsunaga Takeshi, Tsuzuki Katsunori, Yanase Nobuyuki, Kritsananuwat R.*, Hanzawa Yukiko, Naganawa Hirochika

Journal of Nuclear Science and Technology, 52(4) 514-529, Apr, 2015 Peer-reviewed
Temporal variations in metal enrichment in suspended particulate matter during rainfall events in a rural stream

Matsunaga Takeshi, Tsuzuki Katsunori, Yanase Nobuyuki, Kritsananuwat R.*, Ueno Takashi, Hanzawa Yukiko, Naganawa Hirochika

Limnology, 15(1) 13-25, Jan, 2014 Peer-reviewed
Development of coupled modeling system for regional water cycle and material transport in the atmospheric, terrestrial, and oceanic environment

Nagai Haruyasu, Kobayashi Takuya, Tsuzuki Katsunori, Terada Hiroaki

Progress in Nuclear Science and Technology (Internet), 2 556-567, Oct, 2011 Peer-reviewed
Isotope hydrograph separation for modeling of runoff mechanisms of atmospherically derived chemical and radioactive pollutants

Matsunaga Takeshi, Yanase Nobuyuki, Hanzawa Yukiko, Tsuzuki Katsunori, Naganawa Hirochika

Journal of Water and Environment Technology (Internet), 3(2) 243-252, Jan, 2005 Peer-reviewed
Particulate and dissolved elemental loads in the Kuji River related to discharge rate

Nagano Tetsushi, Yanase Nobuyuki, Tsuzuki Katsunori, Nagao Seiya*

Environment International, 28(7) 649-658, Jan, 2003 Peer-reviewed

Misc.

Transfer and operation of WSPEEDI-II automatic calculation system for responses to nuclear tests by North Korea

Nemoto Miho*, Ebine Noriya, Okamoto Akiko, Hosaka Yasuhisa*, Tsuzuki Katsunori, Terada Hiroaki, Hayakawa Tsuyoshi, Togawa Orihiko

JAEA-Technology 2021-013, 41, Aug, 2021
Activities on predictions of atmospheric dispersion of radionuclides for nuclear tests by North Korea

Ishizaki Shuhei, Hayakawa Tsuyoshi, Tsuzuki Katsunori, Terada Hiroaki, Togawa Orihiko

JAEA-Technology 2018-007, 43, Oct, 2018
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
A Passive collection system for whole size fractions in river suspended solids

Matsunaga Takeshi, Nakanishi Takahiro, Atarashi-Andoh Mariko, Takeuchi Erina, Tsuzuki Katsunori, Nishimura Shusaku, Koarashi Jun, Otosaka Shigeyoshi, Sato Tsutomu*, Nagao Seiya*

Journal of Radioanalytical and Nuclear Chemistry, 303(2) 1291-1295, Feb, 2015
The Establishment of the framework and actual experience for the prediction of atmospheric dispersion of radionuclides against the nuclear test by North Korea

Nakanishi Chika, Sato Takeshi, Sato Sohei, Nagai Haruyasu, Kakefuda Toyokazu, Katata Genki, Tsuzuki Katsunori, Ikeda Takeshi, Okuno Hiroshi, Yamamoto Kazuya …

JAEA-Technology 2013-030, 105, Oct, 2013
Scheme for riverine input of toxic trace elements at different flow stages in a rainfall event

Matsunaga Takeshi, Yanase Nobuyuki, Kritsananuwat R.*, Tsuzuki Katsunori, Hanzawa Yukiko, Naganawa Hirochika

Proceedings of 12th International Conference on Integrated Diffuse Pollution Management (IWA DIPCON 2008) (CD-ROM), 370-371, Aug, 2008
Introduction of WRF into coupled water cycle model

Nagai Haruyasu, Tsuzuki Katsunori, Kobayashi Takuya

Extended abstract of 9th Annual WRF Users' Workshop (Internet), 4, Jun, 2008
Verification of distributed rainfall-runoff model using a hydrogen isotopic ratio, and analysis of nitrate nitrogen transport to a stream (Joint research)

Tsuzuki Katsunori, Matsunaga Takeshi, Inoue Takanobu*

JAEA-Research 2008-008, 31, Mar, 2008
A Study on scheme of stream discharge of hazardous metals in rainfall events

Matsunaga Takeshi, Yanase Nobuyuki, Hanzawa Yukiko, Tsuzuki Katsunori, Naganawa Hirochika

JAEA-Research 2007-056, 143, Jul, 2007
Importance of hydrological parameters in contaminant transport modeling in a terrestrial environment

Tsuzuki Katsunori, Matsunaga Takeshi

Proceedings of International Symposium on Environmental Modeling and Radioecology, 65-72, Mar, 2007
Stream discharge of metals and rare earth elements in rainfall events in a forested catchment

Matsunaga Takeshi, Tsuzuki Katsunori, Yanase Nobuyuki, Hanzawa Yukiko, Naganawa Hirochika, Inoue Takanobu*, Yamada Toshiro*, Miyata Akifumi*

Proceedings of International Symposium on Environmental Modeling and Radioecology, 243-246, Mar, 2007
Model coupler for coupling of atmospheric, oceanic, and terrestrial models

Nagai Haruyasu, Kobayashi Takuya, Tsuzuki Katsunori, Kim K.

JAEA-Data/Code 2007-002, 65, Feb, 2007
Numerical simulation system for environmental studies: SPEEDI-MP

Nagai Haruyasu, Chino Masamichi, Terada Hiroaki, Harayama Takaya*, Kobayashi Takuya, Tsuzuki Katsunori, Kim K., Furuno Akiko

JAEA-Research 2006-057, 67, Sep, 2006
P175 大気-陸面-水文結合モデルの開発と砂漠地域における水循環予測の試験計算(2)

永井晴康, 都築克紀

大会講演予講集, 90 333-333, 2006
D315 大気-陸面-水文結合モデルの開発と砂漠地域における水循環予測の試験計算(相互作用)

永井晴康, 都築克紀, 植田洋匡

大会講演予講集, 86 366-366, 2004
Consideration for modeling studies of migration of accidentally released radionuclides in a river watershed

Matsunaga Takeshi, Monte L., Tsuzuki Katsunori, Yanase Nobuyuki, Hanzawa Yukiko, Ueno Takashi

JAERI-Review 2003-039, 150, Jan, 2004
A Code for predicting the migration of ground additional MOGRA

Amano Hikaru, *, Uchida Shigeo*, Tsuzuki Katsunori, Matsuoka Shungo*, Ikeda Hiroshi*, Matsubara Takeshi*, Kurosawa Naohiro*

KURRI-KR-80, 48-49, Dec, 2001

Presentations

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
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
Development of an objective evaluation method for the uncertainty of atmospheric dispersion prediction derived from a meteorological forecast

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

日本気象学会2020年度秋季大会
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
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
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
Improvement of atmospheric dispersion simulation and reconstruction of source term and atmospheric dispersion processes

Nagai Haruyasu, Terada Hiroaki, Tsuzuki Katsunori, Katata Genki, Ota Masakazu, Furuno Akiko, Kadowaki Masanao, Akari Shusaku*

日本放射線影響学会第59回大会
Reconstruction of atmospheric dispersion process of radioactive materials released into the atmosphere during the accident at the Fukushima Daiichi Nuclear Power Station

Terada Hiroaki, Nagai Haruyasu, Katata Genki, Tsuzuki Katsunori, Akari Shusaku*

第57回大気環境学会年会
Stream-water organic carbon export from a mountainous forested catchment

Takeuchi Erina, Atarashi-Andoh Mariko, Koarashi Jun, Nishimura Shusaku, Muto Kotomi, Tsuzuki Katsunori, Nakanishi Takahiro, Matsunaga Takeshi

2015日本放射化学会年会・第59回放射化学討論会
Radiocesium in a mountainous forested catchment; Inventory, distribution, and fluvial discharge

Takeuchi Erina, Atarashi-Andoh Mariko, Nishimura Shusaku, Nakanishi Takahiro, Tsuzuki Katsunori, Koarashi Jun, Matsunaga Takeshi

13th International Conference on the Biogeochemistry of Trace Elements (ICOBTE 2015)
Updating source term and an atmospheric transport, dispersion and deposition model, WSPEEDI

Nagai Haruyasu, Terada Hiroaki, Tsuzuki Katsunori, Ota Masakazu, Furuno Akiko, Akari Shusaku, Katata Genki

15th International Congress of Radiation Research (ICRR 2015)
Fluvial discharges of particulate and dissolved radiocesium from a forest catchment

Takeuchi Erina, Atarashi-Andoh Mariko, Nishimura Shusaku, Nakanishi Takahiro, Tsuzuki Katsunori, Koarashi Jun, Matsunaga Takeshi

2014日本放射化学会年会・第58回放射化学討論会
Application of coupling simulation of atmospheric, terrestrial, and oceanic transport models to predict the environmental transport of radioactive materials discharged from the Fukushima Dai-ichi Nuclear Power Plant, 2

Nagai Haruyasu, Tsuzuki Katsunori, Kobayashi Takuya, Terada Hiroaki

日本原子力学会2014年秋の大会
Measurement of air dose rate distribution in a forest catchment using KURAMA-II

Takeuchi Erina, Atarashi-Andoh Mariko, Koarashi Jun, Nishimura Shusaku, Tsuzuki Katsunori, Matsunaga Takeshi

日本保健物理学会第47回研究発表会
Application of coupling simulation of atmospheric, terrestrial, and oceanic transport models to predict the environmental transport of radioactive materials discharged from the Fukushima Dai-ichi Nuclear Power Plant

Nagai Haruyasu, Tsuzuki Katsunori, Kobayashi Takuya, Terada Hiroaki

日本原子力学会2014年春の年会

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