Beware ‘Spring Maximum’ for Radioactive Fallout

Published: April 6th, 2012 at 9:06 am ET


Follow-up to: [intlink id=”noaa-scientists-plumes-from-asia-contribute-up-to-20-of-total-pollution-on-us-west-coast-maximum-enhancement-over-los-angeles-basin-southwestern-us-beware-of-spring-maximum” type=”post”]{{empty}}[/intlink]

Atmospheric Ozone and Radioactive Fallout, 1967:

The spring maximum in radioactive fallout has been observed by many researchers […]

At Tateno,Japan,for example, has a peak in March every year from 1962 to 1966, while in Sr-90 fallout at Tokyo the peak is observed in the months from March to June.

[…] the Sr-90 maximum appeared in April and May at New York.

[…] It is to be noted that at many places both total ozone and radioactive fallout have maxima in the spring time and minima in fall […]

Title: Plutonium isotopes in the surface air in Japan: Effect of Chernobyl accident
Source: Journal of Radioanalytical and Nuclear Chemistry
Author: K. Hirose, Y. Sugimura
Date: June 1989

Plutonium isotope concentrations in the surface air at Tsukuba, Japan are reported during the period from 1981 to the end of 1986. The 239,240Pu concentration in the surface air, which showed a marked seasonal variation with a spring maximum […]

Read the report here

Unfortunately, it’s been difficult finding any reference to the ‘spring maximum’ in relation to Fukushima.

Published: April 6th, 2012 at 9:06 am ET


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19 comments to Beware ‘Spring Maximum’ for Radioactive Fallout

  • Radiation Exposure and Protection Info … while we wait in the dr's office,9.0.html

  • dka

    Japanese, mainly Kanto and North-East Japan, have been living in a nuclear smog, living in an almost constant cloud of radioactive dusts since a year. And this is continuing.
    Unlike Chernobyl, where it took weeks to end the fallouts and clouds. Fukushima is now a every day presence in their life.
    Killing them more every day. It is still there. It has not ended like Chernobyl. I don't know any other case of a similar long time exposre to radioactive particule gaz, but this sounds simply inhuman, and will destroy much more life than whatever has been calculated so far. It is not possible to survive a constant every day breathing of cesium, iodine, radioactive silver-lead, kadnium, plutonium, strontium, americinium, ……
    The scale of this poisoning is unimaginable, behond comprehension.


      @dka: "The scale of this poisoning is unimaginable, beyond comprehension." pretty much captures it all…

  • Bobby1

    Daily fluctuations of radioactive fallout particles in ground‐level air

    Several other pronounced increases in particle
    concentrations were measured on January 12,
    15, 23, February 1, 19, and 22. All these peaks
    have a direct correlation with the passage of the
    500 mb trough. The dynamic explanation of this
    process is that to the immediate west of the
    upper-level trough, we usually find low-level
    divergence and upper-level convergence with
    descending motion. It is this descending motion
    that brings down upper air and thus tends to
    increase the particle concentration…

    From the air trajectory study, it appears that
    at 500 mb (18,000 feet) heights, the number of days required
    for one complete global cycle is 17, while at
    300 mb heights (30,000 feet) the particles move much faster,
    requiring only 10 days for a complete cycle. If
    the radioisotopes are to be carried by air currents
    at these different rates, it is justified to believe
    that some of the measured ground-level fallout
    data have to agree with the 500 mb trajectory,
    while the 300 mb trajectory should fit other
    measured peaks…

    Our study suggests that the 300 mb trajectory
    provides a very good interpretation of the small
    particle concentration, while the 500 mb trajec-
    tory seems to agree better with the cyclic be-
    haviour of larger particles…

    • Bobby1

      The 300 mb jet stream contains smaller particles:

      The 500 mb troughs concentrate larger particles:

      You can see that right now, the larger particles are descending on South Carolina and Virginia. Both the large and small particles are descending on Utah, which is having the highest concentration of radioactive particles now.

      When there is a new release from Fukushima, the larger particles dominate. They come back to earth faster than the smaller ones. When you have a spike from this level, you know that 17 days later there will be another one, after it has circled the earth.

      You can use the NCEP maps to determine where the fallout is highest, and will be highest over the next several days… the atmospheric dispersion maps are unnecessary.

    • thanks, Bobby1. critical fallout info. put at rc jet streams

      also, for those of you with patience for higher band width pages who would like to get the rad word out, here are 16 or so live Occupy livstreams with their chat boxes lined up like soldiers. wait a minute for the page to load… now you have access to sharing your nuke info with several occupy folks at once. mahalo

    • WorseThanChernobyl

      Actually, I live there, and the pro nuke trolls do too! So it is less of an invasion and more of a long term infestation in my mind. I try to post on the TC Herald website when I can, but the responses are always insulting and arrogant no matter how well thought out and research backed my posts are. If you ever want to go face to face with a bunch of pro nuke and proud folks, come visit the Tri-Cities. There have been people who posted about cancer killing most everyone in their families from growing up there, and they too get ridiculed and blasted. It is pretty sick and sociopathic. I want to move but don't know where to go. I will be at the Hanford rally on the 15th. I am really looking forward to it, even if the other locals are pissed off about it!

    • AGreenRoad AGreenRoad

      Hanford; Lethal And Leaking; A Race To Armageddon? via A Green Road Blog

  • Heart of the Rose Heart of the Rose

    It's time for cedar allergies..
    ..Inflammation caused by cedar pollen…add radiation..

  • Whoopie Whoopie

    BREAK TIME FOR ME. All achy this a.m. 🙁

  • StillJill StillJill

    Whoopie,…..Have you taken a soak yet? You are strong,….why don't you keep yourself that way, K, friend??? 🙂

    We need you,…please take care of your precious self! 🙂

  • WorseThanChernobyl

    There were 120 plus comments on that Tri-City Herald article about the Hanford rally, and they have all been deleted! So much for trying to support the cause.

  • Lee Binder

    >> Unfortunately, it’s been difficult finding any reference to the ‘spring maximum’ in relation to Fukushima.

    oh that's e-z: Fuku has an ongoing everyday maximum, meaning too much all the time ..

    • ENENews

      Apparently, a significant portion of radioactive material enters the troposphere and/or stratosphere and can come back down to the earth's surface. The most fallout from those upper elevations happens in Spring, least in Fall. This is in addition to any ongoing releases.

    • Bobby1

      "The concentrations of the bomb-produced nuclides in surface air and their transport to the troposphere exhibited strong latitudinal and seasonal variations (Rangarajan and Gopalakrishnan, 1970; Silker,
      1972; Perkins and Thomas, 1980; Staley, 1982; Dutkiewicz and Husain, 1985). The concentrations of 137Cs in surface air were highest in the spring at low and mid-latitudes (Rangarajan and Gopalakrishnan, 1970; Silker, 1972). The fallout rate of 90Sr and its concentration in surface air were found to be highest (1) in late-winter and spring at low latitudes (Machta, 1959; Staley, 1982) and (2) in summer at mid-latitudes (Schumann and Stoeppler, 1963; Staley, 1982)." p.46