Plotting average wind vector of two years

[Mallikarjun]

Hello Grads Users,

 I have an elementary problem in plotting netcdf data of
two years. I have uwnd.1999.nc, uwnd.2000.nc and vwnd.1999.nc,
vwnd.2003.nc. I want to take the average of november 1999 to april
2000 data and generate the average plot for november 1999 to april 2000.

Could anyone suggest me how to do it.

Thanks in advance,

--
Mallikarjuna.K