Dr. Jeff Masters at the Weather Underground (a meteorology site) ran a NOAA computer model to answer the question. The answer is yes—but, not in quantities to be of concern for human health.

Tickets for the 14th Annual HUMP! Film Festival On Sale Now!

  • http://www.wunderground.com/blog/JeffMasters/show.html

Dr. Masters links to a more refined model by the Austrian weather service, also showing the spread of the materials across Japan and the Pacific.