Skip Navigation Links www.nws.noaa.gov 
NOAA logo - Click to go to the NOAA homepage National Weather Service   NWS logo - Click to go to the NWS homepage
Environmental Modeling Center
 
 
Local forecast by
"City, St" or
Zip Code

 

Marine Modeling and Analysis Branch Logo Click here to go to the MMAB home page

Fukushima Surface Plume Study using Global RTOFS

At the onset of the Fukushima Nuclear Power Plant (FNPP) event, it was decided that development of advisory ocean forecast products was to proceed even though there was no initial actionable information on ocean or atmospheric radionuclide composition or release rates. This decision resulted in the evolution of a two-phase program. The first phase was ocean model forecasting of an idealized plume of water released in and around the FNPP area. The second phase began once numerical estimates of atmospheric wet deposition of radionuclides on the ocean surface began to arrive.

As the event progressed, limited geospatial information derived from ocean measurements at selected stations in the region close offshore from the FNPP site were received from MEXT and TEPCO. These were used as “ground truthing” guidance on the modeled plume time- dependent estimates of radionuclide activity. These data were not part of the input data for the forecast products.

Two separate unverifiable model data sets of atmospheric wet deposition radionuclide deposition fuxes were received over the course of the event and were used in the production of plume forecast products. A third verifiable data set was received near the end of the event and was used in the development of ocean tracer forecast products, but not by the particle-density based plume estimates.

Plume Particle Density Viewer (note: page loads slowly)

NOAA plume activity slide 1 NOAA plume activity slide 2

Plume Particle Density Viewer (note: page loads slowly)
Plume Activity Viewer (note: page loads slowly)

NOAA plume activity slide 1 NOAA plume activity slide 2 NOAA plume activity slide 3 NOAA plume activity slide 4 NOAA plume activity slide 5 NOAA plume activity slide 6 NOAA plume activity slide 7

Plume Activity Viewer (note: page loads slowly)

EMC/MMAB Information Topics:
All Products, About Us, Contact Us
NOAA/ National Weather Service
National Centers for Environmental Prediction
Environmental Modeling Center
Marine Modeling and Analysis Branch
5830 University Research Court
College Park, MD 20740
About Us
Disclaimer
Credits
Career Opportunities
Glossary
Privacy Policy
Comments/Feedback
Page last modified: Tuesday, 18-Nov-2014 18:34:03 UTC