HYSPLIT - Hybrid Single Particle Lagrangian Integrated Trajectory Model

The HYSPLIT model can be run interactively on the READY web site or installed on a PC (Mac) and run using a graphical user interface (GUI).

HYSPLIT-WEB (Internet-based)

• Run HYSPLIT with archived data
• Run HYSPLIT with forecast or archived data (registration required)
• HYSPLIT for Volcanic Ash

Windows-based HYSPLIT

• Download Unregistered Version
• Download Registered Version (registration required)
• Graphical Utilities
• Meteorological Data Conversion Utilities
• Gridded Meteorological Data Archives

Apple-based HYSPLIT

• Download Registered Version (registration required)

Email Version

• Email Trajectories (registration required)

Specialized Uses

• NWS WFO Access Only (Contact regional MSD for access)
• Internal Access Only

Modules

• Chemical Conversion

User Contributions

• TrajStat a GIS Trajectory Analysis Tool

Documentation

• HYSPLIT Model Overview
• Example HYSPLIT Products
• HYSPLIT User's Guide (PDF, 1.7 MB) or (zipped HTML file ~1.5MB)
• Description of the HYSPLIT_4 Modeling System (PDF, 182 KB)
• Research Papers Referencing HYSPLIT
• Web Pages Referencing HYSPLIT
• Verification Results using the DATEM archive

On-Line Training

• HYSPLIT Training Workshops
• COMET CAMEO/HYSPLIT
• COMET Dispersion Basics
• COMET NWS Support During Haz. Mat. Emergencies