MEGAN3

Issues and Fixes for version MEGAN3.0

Some issues (and fixes) associated with MEGAN3.0 have been identified.


USER GUIDES

User guides are available for the three components of the MEGAN3 modeling system including input data and preprocessor, emission factor processor, and emission calculator.


CODE

Code available for the three components include preprocessor (FORTRAN code), emission factor processor (Python code), and emission calculator (FORTRAN code).


REQUIRED INPUT VARIABLES for MEGAN3 include:

1. Leaf Area Index of vegetation covered surfaces (LAIv)

2. Growth Forms.

Global data sets with ~1km resolution:

3. Ecotype

Global dataset with detailed ecotype information for the USA (based on LANDFIRE data) but very simple and limited data outside of the USA: ecotype

A version with more detailed ecosystems for the rest of the world is under development.


OPTIONAL INPUT VARIABLES (Not required unless you want to include stress responses)

These are netcdf format files with monthly values of gammaSM on a global 0.5 degree grid. They were calculated using the approach described by Jiang et al. Atmos Environ , 2018 https://doi.org/10.1016/j.atmosenv.2018.01.026 and can be input into MEGAN3.


TEST CASE

A test case is available and is a good starting point for running MEGAN3.