WYI : Webster-Yang Index (Webster and Yang, 1992)

EAMI: East Asian Monsoon Index (Zhu et al., 1999, 2000)
WNPSMI : Western North Pacific Summer Monsoon Index (Wang et al., 2001)

EASRA : East Aian Summer Rainfall Anomaly (Jhun and Lee, 2004)
EASMI : East Asian Summer Monsoon Index (Wang et al., 2001)
RM2 : Regional Monsoon Circulation Index (Lau et al., 2000)

AUSMI : Australian summer monsoon index AUSMI (Wang et al., 2004)