[ncl-talk] Sub:Ensemble Mean..

[Dennis Shea]

Read the 'addfiles' documentation. In particular, Example 2, ....

http://www.ncl.ucar.edu/Document/Functions/Built-in/addfiles.shtml


==

; all files in the same directory
     diri   = "./"
     fili    = (/ "Model_A.nc", "Model_Bnc", "Model_C.nc",/)
     fils   = diri + fili
     print(fils)

; different directories
     diri   =  (/  "/ADIR/" , "/BDIR/" , "/CDIR/" /)
     fili    =  (/ "Model_A.nc", "Model_Bnc", "Model_C.nc",/)
     fils   =  diri + fili
     print(fils)

   f    = *addfiles* (fils, "r")   ; note the "s" of *addfile*
<http://www.ncl.ucar.edu/Document/Functions/Built-in/addfile.shtml>
   *ListSetType*
<http://www.ncl.ucar.edu/Document/Functions/Built-in/ListSetType.shtml>
(f, "join")

   T    = f[:]->T                ; read T from all files
   *printVarSummary*
<http://www.ncl.ucar.edu/Document/Functions/Built-in/printVarSummary.shtml>
(T)


The *printVarSummary*
<http://www.ncl.ucar.edu/Document/Functions/Built-in/printVarSummary.shtml>
procedure yields:

   Variable: T

   Number of Dimensions: 5
   Dimensions and sizes:
    [ncl_join | 5] x [lev | 5] x [lat | 48] x [lon | 96]

or

   Dimensions and sizes:
    [ncl_join | 5] [time | 100] x [lev | 5] x [lat | 48] x [lon | 96]

     Tmean = dim_avg_n_Wrap(T, 0)
     printVarSummary(Tmean)


On Tue, May 19, 2015 at 4:48 PM, Adv <advita6 at gmail.com> wrote:

> Hi ,
> I would like to calculate the ensemble mean of three different model data
> sets with same time , lat and lon coordinate.
> For example,
> X(time,lat,lon) Model1
> X1(time,lat,lon) Model2
> X2(time,lat,lon) Model3
> Could someone explain me, how to accomplish the ensemble mean?
>
> Thanks,
> Adv
>
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