Important: The Climate Analysis Branch (PSD1) web site will be down in anticipiation of our major web restructuring starting Tuesday Jan 20th at 1pm MST.
You can find more info about the upcoming URL changes here.
You can find more info about the upcoming URL changes here.
ENSO response
![bullet](https://webarchive.library.unt.edu/eot2008/20090114160546im_/http://www.cdc.noaa.gov/images/purpleball.gif)
![bullet](https://webarchive.library.unt.edu/eot2008/20090114160546im_/http://www.cdc.noaa.gov/images/purpleball.gif)
![bullet](https://webarchive.library.unt.edu/eot2008/20090114160546im_/http://www.cdc.noaa.gov/images/purpleball.gif)
Years that define events
Winter Summer
El Nino La Nina 1982-83 1954-55 1991-92 1955-56 1997-98 1970-71 1957-58 1973-74 1986-87 1975-76 1972-73 1988-89 1965-66 1998-99 1968-69 1964-65 2002-03 1999-00
El Nino La Nina 1965 1950 1972 1955 1982 1956 1987 1964 1991 1971 1993 1974 1994 1988 1997 1999 2002 1998