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Lanerolle, L. W., NOAA/National Ocean Service, Silver Spring, USA, Lyon.Lanerolle@noaa.gov
Patchen, R. C., NOAA/National Ocean Service, Silver Spring, USA, Rich.Patchen@noaa.gov
Mehra, A. ., NOAA/National Weather Service, Suitland, USA, Avichal.Mehra@noaa.gov
Tolman, H. L., NOAA/National Weather Service, Suitland, USA, Hendrik.Tolman@noaa.gov
Cortinas, J. V., NOAA/Office of Oceanic and Atmospheric Research, Silver Spring, USA, John.Cortinas@noaa.gov

NUMERICAL MODELING OF THE FATE OF OCEANIC RADIONUCLIDES

There is much interest in learning about the fate of radionuclides deposited into the ocean by river discharges and atmospheric deposition, particularly because of the Fukushima Daiichi nuclear power plant damage resulting from the tsunami on March 11, 2011. Here, the results and scientific lessons learned from a numerical modeling study of the fate of radionuclides in the ocean are elaborated. The numerical model employed was Rutgers University's Regional Ocean Modeling System (ROMS). The ROMS model was one-way coupled to a 1-km resolution US Navy Operational Global Ocean Model (NCOM) which provided the initialization and the model forcing fields. The dispersion of radionuclides was simulated using passive tracer fields and ensembles of Lagrangian particles. Three ways of introducing radionuclides into the ocean were examined: (i) direct injection (from the nuclear reactor's water tanks), (ii) atmosphere deposition, and (iii) river runoff. Comparisons of model predictions with observed data will also be discussed in the presentation. These model generated tracer and particle fields will be ingested as initialization fields within a larger numerical ocean model covering the Pacific Ocean.

Poster presentation

Session #:088
Date: 2/21/2012
Time: 10:30 - 16:00
Location: Poster/Exhibit Hall

Presentation is given by student: No

PosterID: B1004