Get & Run HYSPLIT

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

Got a question about HYSPLIT? Ask your question through the HYSPLIT Forum.

HYSPLIT-WEB (Internet-based)

• Run HYSPLIT Trajectory Model (No registration required)
• Run HYSPLIT Dispersion Model (includes volcanic ash)
  • HYSPLIT Registration Instructions
• HYSPLIT for Volcanic Ash
• Spanish Language Tutorial & Instructions for HYSPLIT
• HYSPLIT for NWS Forecast Offices (NOAA employees only – you will leave the ARL web site)
  • BACKUP – HYSPLIT for NWS Forecast Offices (NOAA employees only – backup ARL site)

PC Windows-based HYSPLIT

• Download Public (unregistered) Version
• Download Registered Version (registration required)
  • HYSPLIT Registration Instructions
• Graphical Utilities – These should be installed prior to HYSPLIT
• Meteorological Data Conversion Utilities

Mac OS Apple-based HYSPLIT

• Download Unregistered Version
• Download Registered Version (NOAA User, Registered User)

LINUX HYSPLIT

• Information on Downloading LINUX Version

Automated HYSPLIT Dispersion Forecasts

• Automated dispersion forecasts for select locations (registration required)
  • HYSPLIT Registration Instructions

HYSPLIT-compatible Meteorological Data

• NOAA ARL Archived Data
• NOAA NCEP Forecast Data Operational NOMADS Server
• NOAA ARL Forecast Data FTP Server
• University of Alaska Fairbanks GDAS Archive FTP server

Email Version

• Email Trajectories

Modules

• Chemical Conversion

Documentation

• HYSPLIT Model Overview
• Inline WRF-HYSPLIT Coupling
• HYSPLIT Inverse Modeling
• Example HYSPLIT Products
• AMS Paper: NOAA’s HYSPLIT atmospheric transport and dispersion modeling system
• HYSPLIT User’s Guide (PDF, 4.5 MB)
• Description of the HYSPLIT_4 Modeling System (1997, PDF, 182 KB)
• Research Papers Referencing HYSPLIT
• Publications
• Verification Results using the DATEM archive

Online Training/Presentations

• HYSPLIT Tutorials

Configuring HYSPLIT for Radionuclide Applications

• PowerPoint with notes (~9.3 Mb; Microsoft PowerPoint Viewer)
  PDF with no animation or notes (~3.8 Mb)
• HYSPLIT Applications for Emergency Decision Support (COMET)
• Dispersion Basics (COMET)
• HYSPLIT Training Workshops
• HYSPLIT Forum

User Contributions

• SplitR
• PySPLIT
• TraPSA (Trajectory-based Potential Source Apportionment) project
• TrajStat a GIS Trajectory Analysis Tool
• MeteoInfo a GIS Meteorology-Dispersion Model Analysis Tool