even if the option of the pollutant is set to continuous release but is not continuously released.

Topics about the HYSPLIT dispersion model.
alicec
Posts: 150
Joined: February 8th, 2016, 12:56 pm
Registered HYSPLIT User: Yes

Re: even if the option of the pollutant is set to continuous release but is not continuously released.

Post by alicec » July 29th, 2019, 7:43 am

Yes - you are exceeding the number of particles / puffs allowed.
That is what this warning in the MESSAGE file means.

WARNING emspnt: exceeding puff limit
WARNING depsus: exceeding puff limit
NOTICE main: 168 58515839 10000 2.6298373E+14
WARNING emspnt: exceeding puff limit


HYSPLIT will not emit more particles after this limit is exceeded.

Please see the user guide on how to set the number of particles emitted and the
maximum number of particles allowed by the simulation.
You should increase the value of maxpar until you no longer see this warning in the MESSAGE file.
https://ready.arl.noaa.gov/hysplitusersguide/S623.htm

glenn.rolph
Posts: 361
Joined: November 7th, 2012, 1:39 pm
Registered HYSPLIT User: Yes
Contact:

Re: even if the option of the pollutant is set to continuous release but is not continuously released.

Post by glenn.rolph » July 30th, 2019, 8:01 am

If you look at your MESSAGE file you will see that you exceeded the defined maximum particle/puff limit of 10,000. When you exceed this limit as defined in the SETUP.CFG file, the model cannot emit any more pollutant. Set your MAXPAR value in the SETUP.CFG file to a number larger than needed to run your simulation.

solkim
Posts: 14
Joined: July 12th, 2019, 1:28 am
Registered HYSPLIT User: No

Re: even if the option of the pollutant is set to continuous release but is not continuously released.

Post by solkim » August 7th, 2019, 10:44 pm

Thank you for your reply.
Your reply was very helpful to me to solve the matter which caused by particle matter.
And I have one more question.

below is setup option.

Code: Select all

19 07 23 01
1
35.41 126.41 50.0
84
0
10000.0
1
D://api2arl_Win_OS_051719/
0723_new-84hr
1
C137
1.05E+15
84
19 07 23 01 00
1
35.88 127.5
0.03 0.05
5.61 5.2
./
cdump
1
0 
19 07 23 01 00
19 07 26 13 00
00 12 00
1
0.4 1.9 1.0
0.002 136.96 0.0 0.0 0.0
0.0 3.2E-05 5.0E+05
10960.0
1.0E-06
To simulate through this option, I set Set particle/puff RELEASE NUMBER limits in 2 ways .
Option 1 is below

Code: Select all

Particles released per cycle : 2500
Maximum number of particles : 70000000
Maximum particle duration (hrs) : 99999
Option 2 is below

Code: Select all

Particles released per cycle : 250
Maximum number of particles : 700000
Maximum particle duration (hrs) : 100


In Hysplit result of above two options, there is difference in concentration and contour image.
which one is proper or What particle numbers should i set to get proper results?
please let me know.

Best regards.

alicec
Posts: 150
Joined: February 8th, 2016, 12:56 pm
Registered HYSPLIT User: Yes

Re: even if the option of the pollutant is set to continuous release but is not continuously released.

Post by alicec » August 8th, 2019, 3:20 pm

Please review the tutorial to understand how changing the particle number affects results.

Section 7 is particularly relevant.
https://ready.arl.noaa.gov/documents/Tu ... _test.html

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