HYSPLIT Volcanic Ash On-line Transport and Dispersion Model
When a volcano has erupted, see the Volcanic Ash Advisories issued by
Volcanic Ash Advisory Centers and the official volcanic ash
forecasts (SIGMETS).
In the U.S. VAAC areas of responsibility, priority should always be given
to the HYSPLIT model volcanic ash cloud guidance charts for
current or
hypothetical eruptions.
Note that timely delivery of data and products from this server through
the Internet is not guaranteed (see the
disclaimer).
This server is not operational and is not maintained 24 hours a day,
7 days a week.
Do not rely on obtaining volcanic ash HYSPLIT products from this web site.
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:
Citation
Draxler, R.R. and Rolph, G.D., 2003. HYSPLIT (HYbrid Single-Particle Lagrangian Integrated Trajectory) Model access via NOAA ARL READY Website (http://www.arl.noaa.gov/ready/hysplit4.html). NOAA Air Resources Laboratory, Silver Spring, MD.
Rolph, G.D., 2003. Real-time Environmental Applications and Display sYstem (READY) Website (http://www.arl.noaa.gov/ready/hysplit4.html). NOAA Air Resources Laboratory, Silver Spring, MD.
Acknowledgment
The authors gratefully acknowledge the NOAA Air Resources Laboratory (ARL) for the provision of the HYSPLIT transport and dispersion model and/or READY website (http://www.arl.noaa.gov/ready.html) 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 arl.webmaster@noaa.gov. For further information, see the HYSPLIT Use Agreement.
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