替换nc格式中的变量，超级简单

wrf_lanzhou

The NCL function

addfile

can be used to read, create or overwrite a

NetCDF

file. To overwrite an existing file, use a "w" as the second argument. Note that you can not change the dimensionality of any existing variables, but you can change the values. If adding to a netCDF file the type and size of the variable must already exist.

    begin      in = addfile("./esvc.nc","w")      (ncdump of original file)      z_t = (/30,40,89,78,45,234,98,23,456,294,12,17,40,56,17,32,85,93,72,\      20,46,24,90,89,25/)      in->z_t=(/z_t/)      (ncdump of modified file)    end