NUMPAR Clarification

Topics about the HYSPLIT dispersion model.
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Smaug
Posts: 55
Joined: July 1st, 2017, 8:28 am
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NUMPAR Clarification

Post by Smaug » March 28th, 2018, 4:45 pm

The manual states that "NUMPAR represents the total number of particles that are released during one release cycle" and a similar thread states that "The actual particle release rate is computed by dividing NUMPAR by the number of sources and release hours".

So when you are releasing n number of particles as your NUMPAR value, and you have x number of sources; is the total number of particles released n, which is then evenly distributed across x sources (given that you only have one release cycle) ?

Thanks

barbara.stunder
Posts: 402
Joined: November 9th, 2012, 4:23 pm
Registered HYSPLIT User: Yes

Re: NUMPAR Clarification

Post by barbara.stunder » April 2nd, 2018, 8:40 am

Yes. The total number of particles released is shown in the MESSAGE file. See c:\hysplit4\html\S443.htm and/or https://ready.arl.noaa.gov/hypub/hysp_msgfile.pdf.

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