data_vars ["altitude"]

altitude

alt_names	'altitudet' 'altitudeu' 'altitudev'
cmap	'cmo.deep'
name	None
squeeze	None
search_order	'sn'
add_loc	False

["attrs"]

standard_name	'atmosphere_layer_altitude'
long_name	'Altitude'
units	'hPa' 'm'

["select"]

Empty dictionary