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, 2010

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

Positive PNA1977, 1981, 1983, 1984, 1987, 2010

Negative PNA1950, 1951, 1952, 1954, 1955, 1956, 1957, 1959, 1962, 1965, 1967, 1969, 1971, 1972, 1974, 1975, 1976, 1979, 1982, 1989, 1990, 1996, 2002, 2009

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

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