Create the NetCDF file

INTERFACE:

    subroutine init_ncdf(fn,title,lat,lon,nlev,start_time,time_unit)
    IMPLICIT NONE

DESCRIPTION:

Opens and creates the NetCDF file, and initialises all dimensions and variables for the core GOTM model.

INPUT PARAMETERS:

    character(len=*), intent(in)        :: fn,title,start_time
    REALTYPE, intent(in)                :: lat,lon
    integer, intent(in)                 :: nlev,time_unit

REVISION HISTORY:

    Original author(s): Karsten Bolding & Hans Burchard
    See ncdfout module