Gov’t model shows airborne radioactive plume covering entire west coast of US & Canada on Mar 22, 2011… 10 times more radioactive than plume coming from Fukushima plant on same day — Radiation levels in some plumes had no discernible decrease after crossing Pacific (VIDEO)

Published: April 8th, 2014 at 8:16 am ET
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Fukushima Radioactive Aerosol Dispersion, NOAA: The [HYSPLIT] model was developed by NOAA to follow the transport and dispersion of pollutants in the atmosphere. In HYSPLIT, the computation is composed of four components: transport by the mean wind, turbulent dispersion, scavenging and decay. A large number of pollutant particles, which by convention are called “particles” but are just computational “points” (particles or gases), are released at the source location and passively follow the wind. […] March 11th […] by 16:36 a nuclear emergency was reported. By the early morning hours of March 12th, radioactive emissions were occurring […] the simulation from NOAA’s HYSPLIT model shows a continuous release of tracer particles from 12-31 March at a rate of 100 per hour representing the Cesium-137 emitted from Fukushima Daiichi. Eachchange in particle color represents a decrease in radioactivity by a factor of 10.

Notable Features

The March 22, 2011 NOAA model (above right) shows the West Coast of US and Canada covered in red particles, while the Fukushima site — and all of Japan — are under orange particles.  According to the NOAA above a “change in particle color represents a decrease in radioactivity by a factor of 10

Watch NOAA’s Fukushima airborne plume simulation here

Published: April 8th, 2014 at 8:16 am ET
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108 comments

Related Posts

  1. U.S. gov’t model of Fukushima cesium-137 particles covering Northern Hemisphere (VIDEO) March 14, 2013
  2. Professor on PBS: The Fukushima plume is heading to West Coast in “a consolidated mass of water that’s moving in unison” — Study: Nuclear waste “confined to a narrow band” crossing ocean — “Very little dispersion in eastern Pacific” (MAP) February 14, 2014
  3. California schools announce Fukushima testing: Imperative we monitor for any Fukushima contamination “that will be arriving this year” in ocean — LA Times claims levels are declining, fails to inform readers of radioactive plume crossing Pacific January 13, 2014
  4. Experts: Areas along West Coast “may be… affected in a significant way” by Fukushima plume in coming months — Impact cannot be accurately predicted, currents to produce complex results — Radioactive materials can be ‘fairly concentrated’ even after crossing Pacific February 24, 2014
  5. Gundersen: When the radioactive plume hits West Coast in a few months “it’s not like it’s going to end” — Fukushima still pumping contamination into Pacific Ocean 1,000 days after disaster began (AUDIO) December 7, 2013
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