NOTE: The temperature and precipitation ENSO composites have recently been revised in two ways: (1) The ENSO episodes have changed (see http://www.cpc.ncep.noaa.gov/products/analysis_monitoring/ensostuff/ensoyears.shtml) (2) The gridded temperature dataset is new and is referenced in Fan , Y., and H. van den Dool, 2008: A global monthly land surface air temperature analysis for 1948–present. JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 113, D01103, 18 PP., 2008 doi:10.1029/2007JD008470. Data can be found at: ftp://ftp.cpc.ncep.noaa.gov/wd51yf/global_monthly/gridded_binary/t.long