https://uk.mathworks.com/help/matlab/ref/netcdf.getvar.html
netcdf.getVar - Read data from netCDF variable - MATLAB
This MATLAB function returns data, the value of the variable specified by varid.
netcdfgetvarreaddatavariable
https://www.ncl.ucar.edu/Document/Functions/Contributed/addfiles_GetVar.shtml
addfiles_GetVar
NCL contributed.ncl functions (file io)
getvar