2015
DOI: 10.2151/jmsj.2015-002
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Horizontal Resolution Dependence of Atmospheric Simulations of the Fukushima Nuclear Accident Using 15-km, 3-km, and 500-m Grid Models

Abstract: We investigated the horizontal resolution dependence of atmospheric radionuclide (Cs-137) simulations of the Fukushima nuclear accident on March 15, 2011. We used Eulerian and Lagrangian transport models with low-(15-km), medium-(3-km), and high-(500-m) resolutions; both models were driven by the same meteorological analysis that was prepared by our data assimilation system (NHM-LETKF) for each horizontal resolution. This preparation was necessary for the resolution-dependent investigation, excluding any inter… Show more

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Cited by 39 publications
(71 citation statements)
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“…For example, the JMA operational meso-GPV dataset was used by all regional models that participated in the multimodel intercomparison of Fukushima nuclear pollution predictions (Science Council of Japan (SCJ) 2014) except for two models. One was our model (Sekiyama et al 2015), which used an original meteorological dataset. The other model used the European Centre for Medium-Range Weather Forecasts (ECMWF) operational global GPV dataset.…”
Section: Methodsmentioning
confidence: 99%
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“…For example, the JMA operational meso-GPV dataset was used by all regional models that participated in the multimodel intercomparison of Fukushima nuclear pollution predictions (Science Council of Japan (SCJ) 2014) except for two models. One was our model (Sekiyama et al 2015), which used an original meteorological dataset. The other model used the European Centre for Medium-Range Weather Forecasts (ECMWF) operational global GPV dataset.…”
Section: Methodsmentioning
confidence: 99%
“…The other model used the European Centre for Medium-Range Weather Forecasts (ECMWF) operational global GPV dataset. All models except Sekiyama et al (2015) utilized the GPV datasets that were prepared by others (i.e., JMA or ECMWF). However, for the purpose of our investigation, the GPV datasets have to be prepared by our own data assimilation system because we need to arrange a comparison of meteorological analyses performed in the presence or absence of surface wind data assimilation.…”
Section: Methodsmentioning
confidence: 99%
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