data_vars ["sal"]

sal

alt_names	'psal' 'salinity'
cmap	'cmo.haline'
name	None
squeeze	None
search_order	'sn'
add_loc	False

["attrs"]

standard_name	'sea_water_salinity'
long_name	'Salinity'
units	'1e-3' 'PSU'

["select"]

Empty dictionary