IT	Information theoretic
DAG	Directed acyclic graph
ACE	Average causal effect
ENSO	El Niño–Southern Oscillation
PNW	Pacific Northwest
(S)MI	(Specific) mutual information
(S)TE	(Specific) total effect
(S)CDE	(Specific) controlled direct effect
(S)NDE	(Specific) natural direct effect
(S)NIE	(Specific) natural indirect effect
IF	Information flow
CS	Causal strength