Daily feature for dispersion

Topics about the HYSPLIT dispersion model.
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Sebastien_Ars
Posts: 6
Joined: July 28th, 2020, 8:37 am
Registered HYSPLIT User: No

Daily feature for dispersion

Post by Sebastien_Ars »

Hi,

I installed HYSPLIT on my computer and I would like to simulate footprints with the STILT physics every 3 hours for few days.
I tried to use the "Daily" feature in Special Runs for that but I can't manage to make it work.
Here is how I try to parameterize it:

Start calculations at 16 01 07 00 and every 3 hr until 2 days 0 hr after start!

And when I click on 'Execute Script', it gives me the message 'Run duration <=0 .... terminating simulation".
I also tried:

Start calculations at 16 01 07 00 and every 3 hr until -2 days 0 hr after start!

It tells me "Calculations completed" without running anything.

Could you help figuring out what I am doing wrong?

Thanks,
Sebastien
barbara.stunder
Posts: 451
Joined: November 9th, 2012, 4:23 pm
Registered HYSPLIT User: Yes

Re: Daily feature for dispersion

Post by barbara.stunder »

Try starting at 16 01 05 00 and every 3 hr until 2 days 0 hr after start.
If that doesn't work, attach your CONTROL and SETUP files.
Sebastien_Ars
Posts: 6
Joined: July 28th, 2020, 8:37 am
Registered HYSPLIT User: No

Re: Daily feature for dispersion

Post by Sebastien_Ars »

I cannot change the starting time in the Daily menu (see Daily.png attached).
I configured the model and run the first simulation time through the standard run menu (see CONTROL and SETUP files attached) and this first run works fine. But when I try to launch the Daily special runs, the error message appear and the new CONTROL file is blank.
Attachments
Daily.png
CONTROL.txt
(582 Bytes) Downloaded 21 times
SETUP.txt
(659 Bytes) Downloaded 20 times
barbara.stunder
Posts: 451
Joined: November 9th, 2012, 4:23 pm
Registered HYSPLIT User: Yes

Re: Daily feature for dispersion

Post by barbara.stunder »

After looking at the GUI code, this 'run daily dispersion' option is not configured for backward runs. You can develop your own scripts/batch files to loop through the dates/times. There are examples in the C:\hysplit\examples\scripts directory. See also section 2.4 in the Online Tutorial at https://www.ready.noaa.gov/HYSPLIT_Tutorials.php.
Sebastien_Ars
Posts: 6
Joined: July 28th, 2020, 8:37 am
Registered HYSPLIT User: No

Re: Daily feature for dispersion

Post by Sebastien_Ars »

I tried that but somehow, I cannot manage to load the meteo files... It gives me the following error message:

Unable to find file: 20160104_nam12
On local directory : C:\Meteo\NAM12\
Check input CONTROL file for correct values
900

I don't understand, the meteo file is in the indicated directory... Do the nam12 meteo files have an extension I cannot see?

Thanks in advance for your help.

Sebastien
Attachments
Daily_Test_3.txt
(1.82 KiB) Downloaded 21 times
barbara.stunder
Posts: 451
Joined: November 9th, 2012, 4:23 pm
Registered HYSPLIT User: Yes

Re: Daily feature for dispersion

Post by barbara.stunder »

In your Daily_Test_3.bat file, there are tabs in the "echo to the CONTROL file" lines. Change those tabs to spaces, then it will work. That makes a CONTROL file without tabs at the end of the lines.
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