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In this section, select HYSPLIT registered users can run the offline HYSPLIT model using high temporal and spatial resolution meteorological data from the WRF/ARW mesoscale meteorological model. These users can also either run WRF to obtain 9 hours of meteorological data at 3 km horizontal resolution for running HYSPLIT offline, or run the in-line WRF/HYSPLIT model at 1 km resolution for up to 3 hours to provide the highest resolution currently possible.

Current WRF Meteorological Domains

Run HYSPLIT offline with previously created WRF meteorological data

Run WRF/ARW model to create high-resolution meteorological data

Run Inline WRF/HYSPLIT model

Further Options

Publications using HYSPLIT results, maps or other READY products provided by NOAA ARL are requested to include an acknowledgement of, and citation to, the NOAA Air Resources Laboratory. Appropriate versions of the following are recommended:


Stein, A.F., Draxler, R.R, Rolph, G.D., Stunder, B.J.B., Cohen, M.D., and Ngan, F., (2015). NOAA's HYSPLIT atmospheric transport and dispersion modeling system, Bull. Amer. Meteor. Soc., 96, 2059-2077,

Rolph, G., Stein, A., and Stunder, B., (2017). Real-time Environmental Applications and Display sYstem: READY. Environmental Modelling & Software, 95, 210-228, (


The authors gratefully acknowledge the NOAA Air Resources Laboratory (ARL) for the provision of the HYSPLIT transport and dispersion model and/or READY website ( used in this publication.

Redistribution Permission

Permission to publish or redistribute HYSPLIT model results using forecast meteorological data from NOAA ARL can be obtained by providing relevant information (reason, to whom, from whom) via email to For further information, see the HYSPLIT Use Agreement.

Modified: January 22, 2020
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