Impact of Stratospheric Sudden Warming on East Asian Winter Monsoons

Table 1

All SSW events and the downward propagating SSW events.

Year	Onset of major SSW	Termination of major SSW	Onset of minor SSW	Termination of minor SSW
1958	2-6, 11-22^▲	2-14, 12-12^▲	—	—
1960	1-4^▲, 12-9	1-24^▲, 12-26	—	—
1962	—	—	2-4, 12-8	2-23, 12-17
1963	1-25^▲	2-11^▲	—	—
1965	12-4	12-23	—	—
1967	12-30^▲	1968-1-25^▲	—	—
1968	11-18	12-3	—	—
1970	1-1^▲	2-1^▲	—	—
1971	1-10	1-28	—	—
1972	—	—	2-21	3-7
1973	1-28^▲	2-26^▲	—	—
1974	2-26	3-27	—	—
1975	—	—	1-1, 12-24	2-6, 12-28
1976	12-20^▲	12-26^▲	—	—
1977	1-3^▲	1-18^▲	—	—
1978	—	—	1-17^▲, 1-30	1-20^▲, 2-3
1979	2-20	3-5	1-23, 2-6, 11-24	1-28, 2-11, 12-7
1981	11-30^▲	12-8^▲	1-29, 2-16	2-9, 2-27
1982	—	—	1-24^▲	2-4^▲
1983	2-23^▲	3-4^▲	1-27^▲	2-16^▲
1984	2-19^▲, 12-30	3-20^▲, 1985-1-16	—	—
1986	—	—	1-20, 2-15	1-24, 2-22
1987	1-16^▲, 12-7^▲	2-5^▲, 12-19^▲	—	—
1989	2-12^▲	2-28^▲	—	—
1990	—	—	2-5^▲	2-27^▲
1991	1-20^▲	2-16^▲	—	—
1992	—	—	1-11^▲	1-24^▲
1993	12-30^▲	1994-1-8^▲	2-15	2-22
1995	2-9^▲	2-15^▲	—	—
1996	—	—	2-17	3-6
1997	—	—	12-19^▲	1-11^▲
1998	1-5^▲, 12-14^▲	1-11^▲, 1999-1-14^▲	—	—
1999	2-23^▲	3-6^▲	—	—
2001	1-31^▲, 12-23	2-21^▲, 2002-1-10	—	—
2002	2-13^▲	3-5^▲	—	—

Note: ^▲ an SSW downward propagating event; #-# the date of an SSW event in the form of month-day.