Atmospheric transport of 131I and 137Cs from Fukushima by the East Asian northeast monsoon
| Autor: | P.K. Long, Pham Duy Hien, N.H. Quang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Radionuclide
Marine boundary layer 010504 meteorology & atmospheric sciences Health Toxicology and Mutagenesis General Medicine 010501 environmental sciences Jet stream Atmospheric dispersion modeling Monsoon 01 natural sciences Pollution law.invention Siberian High law Climatology Nuclear power plant Environmental Chemistry Environmental science East Asia Waste Management and Disposal 0105 earth and related environmental sciences |
| Zdroj: | Journal of Environmental Radioactivity. 197:74-80 |
| ISSN: | 0265-931X |
| Popis: | The Lagrangian particle dispersion model FLEXPART was used to simulate atmospheric dispersion of radionuclides from the Fukushima nuclear power plant (FNPP) towards the Tropical Western Pacific (TWP) and Southeast Asia (SEA). The simulation model distinguished between hemispherical transport via the jet stream and regional transport within the marine boundary layer by the East Asian northeast monsoon. This regional transport was driven by anticyclonic circulation over southern Japan and the western Pacific resulting from a recurrent eastward extension of the Siberian High to the Pacific Ocean. Activity concentrations of 131I and 137Cs measured at ten monitoring stations in TWP and SEA were used to validate the particle dispersion model. Good agreement between the FLEXPART model and observations yields confidence regarding its application to assess radiation impacts and support emergency planning in response to a possible future nuclear accident in the region. |
| Databáze: | OpenAIRE |
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