Issues when reading a .nc file

Question

I got this .nc file. However, when I read the file like this

ncid = netcdf.open(ncfile)

It gives me only a number. It was supposed to contain some data. I am not sure what's wrong with it.
Can anyone please provide some information?

Answer 1

According to the documentation, netcdf.open only returns the NetCDF ID, not the data:

ncid = netcdf.open(source) opens source, which can be the name of a NetCDF file or the URL of an OPeNDAP NetCDF data source, for read-only access. Returns a NetCDF ID in ncid.

You probably want to use ncread.