The CALPUFF Modeling System 

The CALPUFF modeling system has 3 main components, each with the capability of being applied using a 

graphical user interface (GUI). In addition to these components, there are numerous other geophysical and 

meteorological processors that may be used to prepare or examine data used in the system. 

• CALPUFF Documentation 

• CALPUFF System: Official EPA-Approved Version 

• CALPUFF System: Version 6.42 

CALPUFF Documentation 

z CALMET User's Guide (1.4 MB) 

z CALPUFF User's Guide (3.2 MB) 

z MMS-Sponsored CALPUFF Model Updates (March 2006)

{ Project Overview (18.7KB) 

{ Volume 1: Technical Upgrades (1.90MB) 

{ Volume 1: Appendix (Sea Surface Temperature Datasets) (9.37MB) 

{ Volume 2: Updates to CALMET and Preprocessors User’s Guide (4.14MB) 

{ Volume 3: Updates to CALPUFF and Postprocessors User’s Guide (4.49MB) 

{ Model Evaluation Paper

Scire, J.S., D.G. Strimaitis and F.R. Robe, 2005: Evaluation of Enhancements to the 

CALPUFF Model for Offshore and Coastal Applications. Proceedings of the 10th 

International Conference on Harmonisation within Atmospheric Dispersion Modelling 

for Regulatory Purposes. Sissi (Malia), Crete, Greece. 17-20 October 2005. 

z New Chemistry Updates (v6.4) – Nov 2010

{ Users Instructions - Updated Chemistry (55 KB) 

z CALPUFF Modeling System (Version 6) User Instructions (4.32MB) 

CALPUFF System: EPA-Approved Version 

This is the version of the modeling system officially approved by the U.S. EPA. The current 

versions of the codes include changes documented in Model Change Bulletins (MCB) through 

MCB-D, which reflect updates from the previous (July 2004) EPA-approved versions. 

Note that the EPA version of the modeling system does not include MCB-E or MCB-F which 

have been implemented in the current Version 6 of the model. Most of the MCB-E changes 

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were sent to EPA on February 14, 2008 for review and approval. Some additional changes were 

added to MCB-E and provided to EPA on June 27, 2008. MCB-F was provided to EPA for 

review on February 16, 2011. Review material related to MCB-G is currently being prepared for 

EPA. Once EPA reviews and approves the changes, the EPA-approved version of the model 

will be updated. 

The main system programs in this area are dated June 2007: 

• CALPUFF - Version 5.8 - Level 070623 

• CALMET - Version 5.8 - Level 070623 

• CALPOST - Version 5.6394 - Level 070622 

CALPUFF System: Version 6.42 

Version 6 (v6) of the CALPUFF modeling system contains many new features. The model 

updates include new chemistry options, such as the ISORROPIA v2.1 inorganic gas-particle 

equilibrium model, aqueous phase chemistry and an anthropogenic secondary organic aerosol 

(SOA) module based on the CMAQ/MADRID model. Version 6 also includes options to use subhourly time steps for both meteorological and emissions data, nested grid capabilities, many 

GUI enhancements and new GUI modules. Version 6 of the model contains all Model Change 

Bulletin (MCB) updates through MCB-G. The CALPOST v6 program contains the recommended 

FLAG (2010) techniques on visibility/regional haze assessments. In addition, CALPOST v6 

contains an option to compute daily peak one-hour concentration values consistent with the new 

U.S. 1-hour SO2 and NO2 standards. 

The main system programs are: 

• CALPUFF - Version 6.42 - Level 110325 

• CALMET - Version 6.334 - Level 110421 

• CALPOST - Version 6.292 - Level 110406 

Updated User’s Instructions describing the new chemistry options can be found here. 

Download the CALPro GUI Install

 - Installs the complete EPA-Approved Version of the 

CALMET/CALPUFF/CALPOST System, including graphical 

user interfaces and related processors

 

Download Codes and Related Processors

 - Individual codes and executables for CALMET, 

CALPUFF, CALPOST, and related processors 

Download the CALPro GUI Install

 - Installs the complete Version 6 

CALMET/CALPUFF/CALPOST System, including graphical 

user interfaces and related processors

 

Download Codes and Related Processors

 - individual codes and executables for CALMET, 

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For questions or comments, please contact asg@trcsolutions.com. 

~ Last updated: April 25, 2011 ~ 

CALPUFF, CALPOST, and related processors 

 

Download a Sample CALVIEW Animation

 - Extract the files in "CALView_Animation.zip" to a single 

folder and open "CALView_Animation.html". Best viewed 

with Internet Explorer. 

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