A French atmospheric-research organization has created a "simulation map" suggesting that the North America's west coast has higher cesium-137 levels than western Japan.
The Centre d'Esneignement et de Recherche en Environment Atmosphérique presentation leaves the distinct impression that cesium-137 from the Fukushima 1 nuclear plant has reached the Metro Vancouver area.
According to CEREA, the simulation was "performed with a specific version of the numerical atmospheric chemistry and transport model Polyphemus/Polair3D".
It added: "The magnitude of the deposition field is uncertain and the simulated values of deposited radionuclides could be significantly different from the actual deposition. In particular, the source term remains uncertain. Therefore, these results should be seen as preliminary and they are likely to be revised as new information become available to better constrain the source term and when radionuclides data can be used to evaluate the model simulation results.
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