NOAA ARL Real-time Environmental Applications and Display sYstem - Dispersion Models

NOAA Air Resources Laboratory

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HYSPLIT MODEL

NOTICE: As of October 1, 2009 we are no longer supporting this HYSPLIT web site. Users should begin using the new HYSPLIT web site at:
http://ready.arl.noaa.gov/HYSPLIT.php.

If you are a registered user and still need access to the forecast dispersion simulation or to download the registered version of PC HYSPLIT, you will need to create an account on the new web site. To create an account on the new web site follow the instructions of the following web page:
https://ready.arl.noaa.gov/hynew/register.php.

HYSPLIT-WEB (Internet-based)

Run HYSPLIT with archived data
Run HYSPLIT with forecast or archived data (registration required)

Registration Instructions

HYSPLIT for Volcanic Ash
NWS WFO Access Only (Contact regional MSD for access)
Internal Access Only

Windows-based HYSPLIT

Apple-based HYSPLIT

Registered Version 4.9 (HYSPLIT registration required)

Email Version

Email Trajectories (HYSPLIT registration required)

Modules

Chemical Conversion

User Contributions

TrajStat a GIS Trajectory Analysis Tool

Documentation

HYSPLIT Model Overview
Example HYSPLIT Products
HYSPLIT User's Guide (pdf file) or (zipped HTML file ~1.5MB)
Description of the HYSPLIT_4 Modeling System (pdf)
Research Papers Referencing HYSPLIT
Web Pages Referencing HYSPLIT
Frequently Asked Questions
Verification Results using the DATEM archive

On-Line Training

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