AERMOD System

AERMOD is a "new generation" air dispersion model. AERMOD was promulgated as a preferred regulatory model in the U.S. in the Federal Register on 11/9/2005, with an effective date of 12/9/2005. AERMOD should be used for all applications for which ISCST3 was previously used. The AERMOD System consists of the AERMOD model, its meteorological preprocessor, AERMET, and its terrain preprocessor, AERMAP.

AERMET, the meteorological preprocessor for AERMOD

EPA documents
EPA AERMET User's Guide (vers. 06341 to be used with AERMOD vers. 07026), pdf format with bookmarks added.
Addendum to the AERMET Userguide (vers. 06341), pdf format with bookmarks added.

AERMAP, the terrain preprocessor for AERMOD

EPA Documents
AERMAP User's Guide (06341, to be used with AERMOD vers. 07026), pdf format with bookmarks added.
Addendum to the AERMAP User's Guide (vers. 06341, to be used with AERMOD vers. 07026), pdf format with bookmarks added.

AERMOD dispersion model

EPA Documents
AERMOD User's Guide (applies to versions 06341 and 07026), pdf format with bookmarks added.
ADDENDUM to the AERMOD User's Guide, pdf format with bookmarks added.
AERMOD Model Formulation Document, in pdf format with bookmarks added.

AERSURFACE land cover tool

EPA Documents
AERSURFACE User's Guide, pdf format.

AERMOD Guidance

EPA Documents
AERMOD Implementation Guide, pdf format with bookmarks added.

Link to EPA SCRAM website containing codes and documentation for the AERMOD modeling system.