Attached is some sample R code for accessing the 2017 EQUATES CMAQ daily average output netcdf file located in this Google Drive folder. The script shows how to:
- open the netcdf file
- extract the variable names and units, as well as the date and model grid information
- read in the daily average PM2.5 data and calculate the annual mean PM2.5 for each grid cell
- plot the annual average PM2. 5 data on a map