CMAQ PM2.5 overestimation

Dear Heomin,

Thank you very much for your information.

Based on my understandin, EDGARv8.1 and HTAPv3.1 offer their monthly gridmap data in a consistent format, as mentioned in their “Click to Expand” sections.

I am currently using Xarray in Python to extract a specific month from the 12-month EDGARv8.1 monthly gridmap .nc file. Following information by @ernesto.pinoc, I also sliced out the “time variable”, resulting in a time-independent .nc file containing data for that month only.

I have to update the arinv file with my corresponding month number (instead of 0) to test if this works. However, I’m creating my GRIDMASK file at the moment. I look forward to give an update.

Kind Regards,

Mason