Calculated trajectory of Japan nuclear plume over America using the NOAA HYSPLIT model

University of Maryland ^ | 21 March 2011

[Milhous]

Today's Trajectories



Air parcel trajectories found using the NOAA HYSPLIT model, as a function of plume height, for release over the Fukushima power plant. Each figure corresponds to release on the indicated date. The top panel of shows the forecast projection of the plumes, with each circle representing a 24 hr period of time. The uncertainty in location is represented by the line segments drawn through each circle (these uncertainties are difficult to estimate at later portions of the trajectory).

The bottom panel of shows the forecast altitude of the trajectory. Dotted lines indicate where rainfall occurs.

The entry point into North America of each trajectory is indicated.

The concentration of hazardous material is greatly reduced by mixing along the trajectories. In addition, most hazardous materials are removed by rainfall

[Red Steel]

According to the graphic above, the radioactive plume is measured in kilometers from the surface. The US, as I recall, used high altitude balloons carrying detection equipment...

And I took a quick look around and I found the Air Force used B-29s equipped with filters to trap airborne debris. But I was thinking of a more practical way for students was to use balloons that the USAF also employed to air sample at altitude:

http://www.americanheritage.com/articles/magazine/it/2006/4/2006_4_44.shtml

http://www.globalsecurity.org/intell/systems/balloons.htm

[mlocher]

The map shows clearly why Obama is in South America.

[Milhous]

Duck and Cover (1951)

Selected for the 2004 National Film Registry of "culturally, historically and aesthetically significant" motion pictures.

Famous Civil Defense film for children in which Bert the Turtle shows what to do in case of atomic attack.

[Milhous]

An A+ for you! Nancy Pelosi’s coincidentally MIA from the continent too.

[devolve]

.

It’s like a really bad sunburn

But 0bama will tax anyone that gets a tanning from it

.

[Milhous]

Hillary’s also MIA from the continent.

[mlocher]

Nancy Pelosi’s coincidentally MIA from the continent too.

LOL! -- but, she was feeling "unwell".

[freejohn]

[Cold Heart]

Is that just for Illinois? Trace radiactive iodine has been recorded in Washington state.

[NoLibZone]

I don’t know what that is, but I’ll bet Doc does. We’re
both from the “duck and cover” generation.

LMAO.

I renumber all those drills too

[seowulf]

I started running a background with my HPGe detector last Friday.

This morning a low confidence Cs-134 peak showed up above MDA. Not enough to call it yet.

[seowulf]

Oh, by the way, I heard on NHK English tonight that seawater samples near the plants showed I-131, Cs-134, and Cs-137 (typical fission products).

[ReformedBeckite]

Personally I won’t put much stock in a chart from a state university, The so called scientists that created it probably created a bunch of global warming charts for the Democrat party.

[Milhous]

NOAA produces short range (a few days) WX forecasts for the US and Canada. Aviation pilots use NOAA products to choose between Visual Flight Rules or Instrument Flight Rules. Local TV news uses NOAA forecasts for weather forecasting.