'v':{'var_name':'vo','standard_name':'northward_sea_water_velocity','units':'m s-1','missing_value':-32768,'long_name':'Northward Current Velocity','shape':'time depth latitude longitude'},
'zeta':{'var_name':'zos','standard_name':'sea_surface_height_above_geoid','units':'m','missing_value':-32768,'long_name':'Sea surface height above geoid','shape':'time latitude longitude'},
'mask':{'standard_name':'sea_binary_mask','units':'1','long_name':'Land-sea mask: sea = 1 ; land = 0','shape':'depth latitude longitude'},
'h':{'standard_name':'h','units':'m','long_name':'model bathymetry depth, measured downwards from geoid','axis':'Z','positive':'down','shape':'depth latitude longitude'}
'h':{'standard_name':'h','units':'m','long_name':'model bathymetry depth, measured downwards from geoid','axis':'Z','positive':'down','shape':'latitude longitude'},
'ww':{'var_name':'wo','standard_name':'upward_sea_water_velocity','units':'m s-1','missing_value':-32768,'long_name':'Upward Current Velocity','shape':'time depth latitude longitude'}