ccdfzonalmean : compute the global zonal mean of the given variable --------------------------------------------------------------------- Compute the zonal mean of the given variable from the input file. Zonal mean is in fact the mean value computed along the I coordinate. The result is a vertical slice, in the meridional direction. This is the wrapping around the native cdfzonalmean operator assuming its usage is:: cdfzonalmean IN-file point_type [ BASIN-file] **[-debug]** ... [-var var1,var2,..] [-max ] **[-pdep | --positive_depths] [-ndep_in ]** CliMAF optional arguments are the ones between '**' See also :doc:`ccdfzonalmean_bas ` for getting a zonal mean in a specified sub-basin. **References** : http://www.drakkar-ocean.eu/tools **Provider / contact** : climaf at meteo dot fr for the wrapping **Inputs** (in the order of CliMAF call): - any dataset (but only one) **Mandatory argument**: - ``point_type`` : indicate the location on C-grid (T|U|V|F|W) **Optional arguments**: - ``opt`` : may be used to pass keys ``-pdep`` (use positive depths in the output file), ``-ndep_in`` (negative depths are used in the input file) and/or ``-debug`` (to add some print for debug) **Required files**: Files mesh_hgr.nc, mesh_zgr.nc, mask.nc must be in the current directory (use :py:func:`~climaf.operators.fixed_fields()` for that; see example below). **Outputs**: - main output : a netcdf file (variable : zoxxxx_glo, where zo replace vo/so prefix of the input variable) **Climaf call example**:: For more examples which are systematically tested, see :download:`cdftools.py <../../examples/cdftools.py>` >>> # How to get required files for Cdftools cdfzonalmean binary >>> fixed_fields('ccdfzonalmean', ... ('mask.nc', '/data/climaf/${project}/${model}/ORCA1_mesh_mask.nc'), ... ('mesh_hgr.nc','/data/climaf/${project}/${model}/ORCA1_mesh_hgr.nc'), ... ('mesh_zgr.nc','/data/climaf/${project}/${model}/ORCA1_mesh_zgr.nc')) >>> # For example, define dataset with meridional velocity component ("vo") >>> dvo=ds(simulation="PRE6CPLCr2alb", variable="vo", period="199807", realm="O") >>> my_cdfzmean=ccdfzonalmean(dvo,point_type='V') >>> cfile(my_cdfzmean) # to compute the global zonal mean and get a filename with the result >>> my_cdfzmean2=ccdfzonalmean(dvo,point_type='V', opt='-debug -pdep') >>> cfile(my_cdfzmean2) **Implementation**: The operator is implemented as a binary using cdftools cdfzonalmean operator.