dust storm

Post questions, comments and links to research (research papers, web sites, etc) involving HYSPLIT and atmospheric dust. This section is also to facilitate collaborations between researchers involved in dust transport and dispersion.
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asal
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Joined: January 29th, 2015, 10:01 am
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dust storm

Post by asal » February 9th, 2015, 6:28 am

hello
There is a question for me. Whether the HYSPLIT model is suitable for convective dust storms?
For example, dust storms, which eventually takes about an hour! :!:

ariel.stein
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Joined: November 7th, 2012, 3:14 pm
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Re: dust storm

Post by ariel.stein » February 10th, 2015, 11:12 am

In principle the model can do it. However, you need to be very careful with the data (meteorological and emissions) that you use to simulate your case. In these links http://ready.arl.noaa.gov/documents/Tut ... _dust.html and http://www.arl.noaa.gov/HYSPLIT_dust.php you can find some basic information about running the dust module within HYSPLIT and how the model is applied to forecast dust in the western US.
You will certainly need to generate meteorological fields (e.g. using WRF model) with a time resolution of the order of minutes for this kind of application.

asal
Posts: 36
Joined: January 29th, 2015, 10:01 am
Registered HYSPLIT User: Yes

Re: dust storm

Post by asal » February 14th, 2015, 2:16 pm

I'm running the dust storms of the HYSPLIT model by using data from WRF model, but do not obtain good output.
The output is :
http://8pic.ir/images/wx9uxkvphobfl88tds7e.png


Run the trajectory model for the dust storm, taking into account the different simulation times, the different outputs.
Is this normal?!!

ariel.stein
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Joined: November 7th, 2012, 3:14 pm
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Re: dust storm

Post by ariel.stein » February 17th, 2015, 11:45 am

Can you please upload the graphic?
We can not click on an external link.

asal
Posts: 36
Joined: January 29th, 2015, 10:01 am
Registered HYSPLIT User: Yes

Re: dust storm

Post by asal » February 17th, 2015, 12:46 pm

oh! Yes
Image

Output, the only source is marked

ariel.stein
Posts: 639
Joined: November 7th, 2012, 3:14 pm
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Re: dust storm

Post by ariel.stein » February 17th, 2015, 2:05 pm

That is because you are not emitting any particles. Are you following the instructions from our workshop example?:
http://ready.arl.noaa.gov/documents/Tut ... _dust.html

If you still have problems, please send me your CONTROL and SETUP.CFG files.

asal
Posts: 36
Joined: January 29th, 2015, 10:01 am
Registered HYSPLIT User: Yes

Re: dust storm

Post by asal » February 17th, 2015, 5:36 pm

But I am confident that the storms that occurred in that area at that time took about an hour.

I have to simulate the example,I had no problem

ariel.stein
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Joined: November 7th, 2012, 3:14 pm
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Re: dust storm

Post by ariel.stein » February 18th, 2015, 2:38 pm

Yes, but probably your wind speeds were not high enough to trigger the emission of dust. Remember that the dust algorithm is based on a parameterization that depends on the threshold friction velocity and the modeled friction velocity.

asal
Posts: 36
Joined: January 29th, 2015, 10:01 am
Registered HYSPLIT User: Yes

Re: dust storm

Post by asal » May 20th, 2015, 10:00 am

Hello
I have a question.
Is the Hysplit model can show us wind speed of dust storms along the trajectory? :|

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