[ RadSafe ] Modeling Atmospheric Transport and Dispersion

[Ahmad Al-Ani]

Hi Dan, this is very close to what I was looking for,
https://narac.llnl.gov/HotSpot/HotSpot.html

and was described well on page 135 of this document:
http://www.acq.osd.mil/ncbdp/narp/pdf/NARP_InternetSupplement_010512.pdf

The "HPAC" mentioned in the above file is not for public use according to this:
http://tinyurl.com/76593gk

Ahmad

------------------------------
On Tue, Mar 6, 2012 12:03 PM AST (Arabian) Dan McCarn wrote:

>Hi Ahmad:
>
>There are Gauss Plume / Puff models available...
>
>*CALPUFF* Is a non-steady state Gaussian *puff* model, suitable for long
>range transport, atmospheric chemistry...
>*PUFF*-*PLUME* - A *Gaussian* chemical/radionuclide dispersion model
>
>Which leads me to the overwhelming question - to borrow a line from T.S.
>Elliot:
>
>I have a project in which there are 6-8,000 release points which are 200m
>radius central pivot spray irrigation systems.  The area is quite flat with
>only 30-50 meters of relief over 10s of kilometers. Given a 'Q' for each
>release point and known atmospheric conditions, I'd like to calculate the
>average dose of radon & daughters being released.  The total release in a
>season is about 3-5 KCi of radon activity in an area about 3,000 km^2.  The
>release is fairly uniform throughout the irrigated area.  Several
>communities are present in the 'middle' of the irrigated area. Wind rose is
>well characterized and the vertical temperature change is uniform.  There
>are seldom, if any, temperature inversions.  The typical radon
>concentrations in the irrigation water are 1,500 -10,000 pCi/L. Outliers
>may exceed 1 million pCi/L in the vicinity of a uranium feature.
>
>Are their any 'magic bullets' already developed to handle this kind of
>problem?
>
>Dan ii
>
>Dan W McCarn, Geologist
>108 Sherwood Blvd
>Los Alamos, NM 87544-3425
>+1-505-672-2014 (Home – New Mexico)
>+1-505-670-8123 (Mobile - New Mexico)
>HotGreenChile at gmail.com (Private email) HotGreenChile at gmail dot com
>
>
>On Tue, Mar 6, 2012 at 12:30 AM, Ahmad Al-Ani <ahmadalanimail at yahoo.com>wrote:
>
>>
>>
>> Are there publicly accessible tools for modeling atmospheric transport and
>> dispersion similar to US Department of Defense's "HPAC" – Hazard Prediction
>> Assessment Capability?
>>
>> Disregarding the intended message of the report, "HPAC" was used to create
>> this report "What if the Fukushima nuclear fallout crisis had happened here
>> (US)?" link http://www.nrdc.org/nuclear/fallout/
>>
>> Ahmad
>>
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