data_vars ["u"]

u

alt_names	'uz' 'u3d'
cmap	'cmo.delta:piv0'
name	None
squeeze	None
search_order	'sn'
add_loc	False

["attrs"]

standard_name	'sea_water_x_velocity'
long_name	'Sea water velocity along X'
units	'm s-1'

["select"]

Empty dictionary