MEGAN32 Preprocessing Issues

Hello, I am encountering some issues while attempting to calculate biogenic emissions using the online MEGAN module within CMAQ 5.4. I have successfully generated various CSV and NetCDF files—such as CT3*, FERT*, LANDTYPE*, etc.—through MEGAN 3.2 preprocessing. While the spatial distributions of some of these files appear reasonable, the spatial distributions of the EFMAP.2019b..ncf and LDF_.2019b.ncf files—which are output via the OutputGridEF..csv files—exhibit obvious errors. I have verified that the exact same domain settings were used for all preprocessing steps. The preceding file, grid_growth_form..csv, can be largely confirmed to be without issues by comparing its values with those in the CT3.csv file. However, the presence of problems in the ecotype.csv file is uncertain, and it is also unknown whether MEGAN_EFP.py generated OutputGridEF using errors.The simulated region is East Asia at a 36 km resolution; I am unsure whether this is related to the specific region. I would greatly appreciate any assistance you can provide in resolving this matter.

For example EFMAP.2019b.*.ncf

For exampleNDEP_*.ncf

megan_error.tar.gz (5.3 MB)

Congratulations on getting this far. Can you share

WRF file you’re using for the MEGAN preprocessor

prepmegan4cmaq.ecotype.inp

prepmegan4cmaq.growthform.inp

prepmegan4cmaq.cantype.inp

I’ll run it through my workflow and see if I can reproduce the issue.