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Users • HYSPLIT not proceeding when using EMITIMES

I want to increase the number of emission points, using EMITIMES. While going through the documentation and following the instructions of the Workshop when using the example of the Volcano emission,...

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Users • Re: Running STILT Configuration Using User-Defined Meteorology

Your CONTROL file is setup to write average concentrations every 0 hours to the cdump file, which can't be done. Change your CONTROL file to the following to write out average concentrations every 13...

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Wildfire Smoke • Grid concentrations not what I expect

I'm simulating four fires emitting 15000 g/hr PM2.5 per hour, for 24 hours, starting 2024 30 00, and the particle plot (PARTPLOT) shows what I would expect. Particles being emitted for 24 hours,...

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Users • Point of Contact for Usage/Result distribution questions?

I'd like to learn more about what is allowed in regards to the distribution and use of model results using the forecasted meteorological files. Is there a point of contact to discuss this with? Or...

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Wildfire Smoke • Re: Grid concentrations not what I expect

Can you please post your CONTROL and SETUP files ?Statistics: Posted by Tianfeng.Chai — May 27th, 2025, 4:34 pm

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Bugs • Re: When using STILT (ichem=8), cmass gets forced to 1 (mass) even...

Correct, HYSPLIT forces CMASS=1 when run with ICHEM=8. However, running with ICHEM=8, particles are still divided by the air density to output a mixing ratio output field.Statistics: Posted by...

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Conversion programs • Re: ACCESS-G to ARL conversion

I am not aware of anyone working on an ACCESS-G to ARL convertor. If you develop one, we would be happy to include it in future HYSPLIT releases for other users to use.Statistics: Posted by...

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Users • Re: HYSPLIT not proceeding when using EMITIMES

The EMITIMES file you attached is the same one from the tutorial. The dates don't match up with your CONTROL file.Statistics: Posted by christopher.loughner — May 29th, 2025, 5:04 pm

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HYSPLIT for PCs • Series of control files in trajectory

Hi I have a bunch (20-35) control files that I want to run through the trajectory model. Is there a more efficient way to do it, instead of retrieving each one individually? I haven't used batch code...

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HYSPLIT for PCs • Re: Series of control files in trajectory

As you wrote, scripting can be very useful to run many trajectories. Please see Sec. 4.1 of our HYSPLIT tutorial at https://www.ready.noaa.gov/documents/Tu ... basic.html. Click the terminal icon to...

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Bugs • ADD_DATA from the EXEC collection does not add station data (out of...

I am trying to add my station meteorology data to the gridded ARL meteorology file, but always fail with a message like: "Station outside of gridded file boundary (lat,lon) ..". However, the...

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Conversion programs • Re: ERA5 data for HYSPLIT

Hello,In order to convert the ERA5 data to the arl format you need 3 files:- A dataset from "ERA5 hourly data on pressure levels from 1940 to present". Stating it simply: this is the 3D data.- A...

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Bugs • Re: ADD_DATA from the EXEC collection does not add station data (out...

Hi. The add_data utility is not built to handle ARL files that have a latitude and longitude coordinate system, so it won't work for global ARL files. We will consider adding this functionality into a...

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