data_vars ["ptop"]

ptop

name	None
alt_names
cmap	None
squeeze	None
search_order	'sn'
loc	None
add_loc	False
exclude	False

["attrs"]

standard_name	'air_pressure_at_top_of_atmosphere_model'
long_name	'Air pressure at top of model'
units	'Pa'

["add_coords_loc"]

Empty dictionary

["select"]

Empty dictionary