Copy with cdo and compress with nccopy

function convert_grb_to_netcdf {

    grb_file=$1

    nc_file="$(echo ${grb_file} | rev | cut -d. -f2- | rev)".nc

    cdo -t ecmwf -f nc -copy -remapcon,r720x360 -setgridtype,regular \

        ${grb_file} ${nc_file}

    tmp_nc_file=${nc_file}_tmp

    cdo -t ecmwf -f nc -copy ${grb_file} ${tmp_nc_file}

    nccopy -7 -d1 -s ${tmp_nc_file} ${nc_file}

    rm -f ${tmp_nc_file}

}

export -f convert_grb_to_netcdf