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MEGAN components and versions

I. FORTRAN code for calculating emissions

1. Off-line code. The MEGAN FORTRAN codes available from this web site are primarily used to generate biogenic emission inputs for air quality models, such as CMAQ or CAMx, and to investigate biogenic emission model sensitivity to input parameters.

Publicly available versions of this code include the following:

2. On-line code. MEGAN has been integrated into chemistry and transport models (CTMs) and used to generate on-line emission estimates and simulate coupled interactions (e.g., weather influences biogenic emissions which influence weather). Each model has somewhat different versions of the MEGAN algorithms and different weather and landcover driving variables. As a result, the predicted emissions can differ considerably. The MEGAN code for each model can be obtained by acquiring the CTM code from the links below and can be run as part of the CTM simulation. An incomplete list of links to models that have incorporated some version of MEGAN includes:

WRF-Chem, CESM, MOZART, GEOS-Chem, ECHAM6-HAMMOZ, MALTE, SURFEX, Oslo CTM3, BRAMS, CSIRO-CTM


II. Emission Factor Processor Python code

A User Guide and Python code is available for the MEGAN3 Emission Factor Processor.