TY - JOUR
T1 - Model depiction of the atmospheric flows of radioactive cesium emitted from the Fukushima Daiichi nuclear power station accident
AU - Nakajima, Teruyuki
AU - Misawa, Shota
AU - Morino, Yu
AU - Tsuruta, Haruo
AU - Goto, Daisuke
AU - Uchida, Junya
AU - Takemura, Toshihiko
AU - Ohara, Toshimasa
AU - Oura, Yasuji
AU - Ebihara, Mitsuru
AU - Satoh, Masaki
N1 - Funding Information:
Parts of this research were supported by funds from MOE/GOSAT2, JST/ CREST/EMS/TEEDDA, JAXA/EarthCARE&GCOM-C, MEXT/KAKENHI/Innovative Areas 2409, MOEJ/ERTDF/S-12 and 5-1501, and the National Regulation Agency, Japan.
Funding Information:
We greatly appreciate the kind support of H. Tomita and H. Yashiro of RIKEN/AICS. We also thank all the local governments who offered the used SPM filter tapes at the request of the Ministry of the Environment, Japan. We have cited the weather maps of Japan Meteorological Agency. We used the meteorological data sets of the Japan Meteorological Agency.Parts of this research were supported by funds from MOE/GOSAT2, JST/ CREST/EMS/TEEDDA, JAXA/EarthCARE&GCOM-C, MEXT/KAKENHI/Innovative Areas 2409, MOEJ/ERTDF/S-12 and 5-1501, and the National Regulation Agency, Japan.
Publisher Copyright:
© The Author(s).
PY - 2017
Y1 - 2017
N2 - In this study, a new method is proposed for the depiction of the atmospheric transportation of the137Cs emitted from the Fukushima Daiichi Nuclear Power Station accident. This method employs a combination of the results of two aerosol model ensembles and the hourly observed atmospheric137Cs concentration at surface level during 14– 23 March 2011 at 90 sites in the suspended particulate matter monitoring network. The new method elucidates accurate transport routes and the distribution of the surface-level atmospheric137Cs relevant to eight plume events that were previously identified. The model ensemble simulates the main features of the observed distribution of surface-level atmospheric137Cs. However, significant differences were found in some cases, and this suggests the need to improve the modeling of the emission scenario, plume height, wet deposition process, and plume propagation in the Abukuma Mountain region. The contributions of these error sources differ in the early and dissipating phases of each event, depending on the meteorological conditions.
AB - In this study, a new method is proposed for the depiction of the atmospheric transportation of the137Cs emitted from the Fukushima Daiichi Nuclear Power Station accident. This method employs a combination of the results of two aerosol model ensembles and the hourly observed atmospheric137Cs concentration at surface level during 14– 23 March 2011 at 90 sites in the suspended particulate matter monitoring network. The new method elucidates accurate transport routes and the distribution of the surface-level atmospheric137Cs relevant to eight plume events that were previously identified. The model ensemble simulates the main features of the observed distribution of surface-level atmospheric137Cs. However, significant differences were found in some cases, and this suggests the need to improve the modeling of the emission scenario, plume height, wet deposition process, and plume propagation in the Abukuma Mountain region. The contributions of these error sources differ in the early and dissipating phases of each event, depending on the meteorological conditions.
KW - Aerosols
KW - Chemical transport modeling
KW - Cs
KW - Ensemble models
KW - Fukushima nuclear power station accident
KW - Radioactive materials
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U2 - 10.1186/s40645-017-0117-x
DO - 10.1186/s40645-017-0117-x
M3 - Article
AN - SCOPUS:85034441800
SN - 2197-4284
VL - 4
JO - Progress in Earth and Planetary Science
JF - Progress in Earth and Planetary Science
IS - 1
M1 - 2
ER -