Table 2: Years used in composite study for El Niño, NAO, and IOD (JFM except OND for IOD).

El Niño1950, 1958, 1966, 1969, 1973, 1983, 1987, 1992, 1998, and 2010

La Niña1950, 1971, 1974, 1976, 1989, 1999, 2000, and 2008

Positive IOD1951, 1956, 1959, 1962, 1963, 1968, 1970, 1974, 1976, 1982, 1986, 1996, 1998, 2000, and 2001

Negative IOD1950, 1957, 1964, 1965, 1966, 1969, 1971, 1972, 1975, 1978, 1980, 1983, 1985, and 2005

Positive NAO1950, 1957, 1959, 1961, 1967, 1973, 1974, 1976, 1983, 1989, 1990, 1992, 1993, 1994, 1995, 1997, 1998, 2000, 2002, and 2008

Negative NAO1955, 1963, 1969, 1979, 1985, 1996, and 2010