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 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
which reflect updates from the previous (July 2004) EPA-approved versions.
Note that the EPA version of the modeling system does not include
MCB-F which have been
implemented in the current Version 6 of the model. Most of the
MCB-E changes 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.
As of October
2011, the EPA has approved an update in CALPOST from V5.6394 (level 070622)
to V6.221 (level 080724). This version includes "Method 8" (MVISBK = 8,
M8_MODE = 5, MVISCHECK = 1), which utilizes the revised IMPROVE equation per
the Federal Land Managers' Air Quality Related Values Work Group (FLAG)
revised October 2010 report.
The main system programs in this area are dated June 2007(with the exception of CALPOST, which is
dated July 2008)
CALPUFF - Version 5.8 - Level 070623
CALMET - Version 5.8 - Level 070623
CALPOST - Version 6.221 - Level 082724
Download the CALPro GUI Install
- Installs the EPA-Approved Version of
the CALMET/CALPUFF System, including graphical user interfaces and related
processors (Updated as of June 29, 2007). Does not yet include CALPOST Version
6.221 (Level 080724). Visit the Codes and Related Processors page below to obtain updated CALPOST version (manual execution of CALPOST outside
of the GUI is required).
Download Codes and Related Processors
- Individual codes and executables for CALMET,
CALPUFF, CALPOST, and related processors
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 sub-hourly 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