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