data_vars ["u"]# u# alt_names 'uz' 'u3d' cmap 'cmo.delta:piv0' name None squeeze None search_order 'sn' loc None add_loc False exclude False ["attrs"] standard_name 'sea_water_x_velocity' 'eastward_sea_water_velocity' long_name 'Sea water velocity along X' 'Eastward velocity' units 'm s-1' ["add_coords_loc"] Empty dictionary ["select"] Empty dictionary