Phenomenon of fragmentation in concentration calculation.

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lenok257
Posts: 3
Joined: March 3rd, 2018, 1:00 am
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Phenomenon of fragmentation in concentration calculation.

Post by lenok257 » March 8th, 2018, 10:58 pm

When calculating the concentration, the concentration is fragmented in a specific area. Do you have any idea why this is happening? I used GDAS half degree data at NOAA archived.

thank you,
JinO
[attachment]
1. fragmentd concentration pictures.png
2. control file.txt
3. setup file.txt
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fragmentd concentration pictures.png
SETUP.CFG.txt
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control test.txt
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ariel.stein
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Re: Phenomenon of fragmentation in concentration calculation.

Post by ariel.stein » March 9th, 2018, 11:39 am

Please try adding more particles and see if your results are sensitive to that parameter.

lenok257
Posts: 3
Joined: March 3rd, 2018, 1:00 am
Registered HYSPLIT User: Yes

Re: Phenomenon of fragmentation in concentration calculation.

Post by lenok257 » March 10th, 2018, 4:37 am

ariel.stein wrote:
March 9th, 2018, 11:39 am
Please try adding more particles and see if your results are sensitive to that parameter.
I calculated the 'numpar' parameter from -2,500 to -5,000 and 10,000. 'Maxpar' parameter were changed from 300,000 to 600,000, but the same thing happened.

I found that this phenomenon is limited to ground level deposition results not between 0 to 100 meters.

[Refer to]
1. numpar2500_maxpar300000_grnd.png
2. numpar10000_maxpar600000_grnd.png
3. numpar10000_maxpar600000_0to100.png

- I suspected that this phenomenon was due to lack of geographic information in the geological data (GDAS data), but it is not accurate. In the MeteoInfo program, both the planetary boundary layer height and surface roughness were displayed.
- Other guesses were that this was due to the high altitude in the area. However, when checked in the MeteoInfo program,
In the sea, the planetary boundary layer was the same, but a "cracking phenomenon" appeared in the sea.

Is my guess right? Do you have any other ideas?
Attachments
numpar10000_maxpar600000_grnd.png
numpar10000_maxpar600000_0to100.png
numpar2500_maxpar300000_grnd.png

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