NOAA NCDC ERSST version4 IOD C1991-2020 Indian Ocean Dipole 1991-2020
IOD C1991-2020 Indian Ocean Dipole 1991-2020 from NOAA NCDC ERSST version4: In situ data: ICOADS2.5 before 2007 and NCEP in situ data from 2008 to present. Ice data: HadISST ice before 2010 and NCEP ice after 2010..