Frequency of Eastern Pacific El Nino events by Freund et al. 2019 Frequency of EP events identified from the NWP and NCT indices (Ren, H.-L. and Jin, F.-F.: Niņo indices for two types of ENSO, Geophys. Res. Lett., 38(4), L04704, doi:10.1029/2010GL046031, 2011.) based on sea surface temperature dataset (HadISST) from 1870 to 2017 used (http://www.metoffic.gove. uk/hadobs/hadisst/) Instrumental SST datset used in Freund et. al (2019) is based on HadISST Contact: Mandy Freund (freundm@unimelb.edu.au) EP Frequency given as the number of EP events centred in 30 year windows Freund, M. B., Henley, B. J., Karoly, D. J., McGregor, H. V., Abram, N. J. and Dommenget, D.: Higher Frequency of Central Pacific El Niņo events in recent decades relative to past centuries, Nature Geosci, doi:https://doi.org/10.1038/s41561-019-0353-3, n.d. Year EP_frequency 1870 NaN 1871 NaN 1872 NaN 1873 NaN 1874 NaN 1875 NaN 1876 NaN 1877 NaN 1878 NaN 1879 NaN 1880 NaN 1881 NaN 1882 NaN 1883 NaN 1884 NaN 1885 4.00 1886 4.00 1887 5.00 1888 5.00 1889 5.00 1890 6.00 1891 6.00 1892 6.00 1893 5.00 1894 5.00 1895 5.00 1896 5.00 1897 5.00 1898 5.00 1899 5.00 1900 5.00 1901 5.00 1902 5.00 1903 6.00 1904 5.00 1905 5.00 1906 5.00 1907 5.00 1908 5.00 1909 5.00 1910 5.00 1911 5.00 1912 4.00 1913 4.00 1914 4.00 1915 4.00 1916 4.00 1917 4.00 1918 3.00 1919 3.00 1920 3.00 1921 2.00 1922 2.00 1923 2.00 1924 2.00 1925 2.00 1926 3.00 1927 3.00 1928 3.00 1929 3.00 1930 3.00 1931 3.00 1932 3.00 1933 3.00 1934 2.00 1935 2.00 1936 3.00 1937 3.00 1938 3.00 1939 3.00 1940 3.00 1941 3.00 1942 4.00 1943 4.00 1944 4.00 1945 4.00 1946 3.00 1947 3.00 1948 3.00 1949 3.00 1950 4.00 1951 4.00 1952 4.00 1953 4.00 1954 4.00 1955 4.00 1956 4.00 1957 4.00 1958 4.00 1959 4.00 1960 4.00 1961 5.00 1962 5.00 1963 5.00 1964 5.00 1965 5.00 1966 5.00 1967 5.00 1968 5.00 1969 5.00 1970 5.00 1971 5.00 1972 5.00 1973 4.00 1974 4.00 1975 4.00 1976 4.00 1977 4.00 1978 4.00 1979 4.00 1980 4.00 1981 3.00 1982 4.00 1983 4.00 1984 4.00 1985 4.00 1986 4.00 1987 4.00 1988 3.00 1989 3.00 1990 3.00 1991 3.00 1992 2.00 1993 2.00 1994 2.00 1995 2.00 1996 2.00 1997 2.00 1998 1.00 1999 1.00 2000 2.00 2001 NaN 2002 NaN 2003 NaN 2004 NaN 2005 NaN 2006 NaN 2007 NaN 2008 NaN 2009 NaN 2010 NaN 2011 NaN 2012 NaN 2013 NaN 2014 NaN 2015 NaN NaN NaN