Coral tells own tale about El Niño’s past: Pacific temperatures over a millennium

ScienceDaily | Mar 27, 2020 at 4:31 AM
  • A study in Science led by Rice University and Georgia Tech researchers parses the record archived by ancient tropical Pacific coral over the past millennium.
  • Previous climate model studies often tie volcanic eruptions, which increase sulfate aerosols in the atmosphere, to increased chances for an El Niño event.
  • Like tree rings, these paleoclimate archives hold chemical indicators, the oxygen isotopes, of oceanic conditions at the time they formed.