Mid-late Holocene El Niño variability in the equatorial Pacific from coral microatolls
Article first published online: 2 APR 2003
Copyright 2003 by the American Geophysical Union.
Geophysical Research Letters
Volume 30, Issue 7, April 2003
How to Cite
2003), Mid-late Holocene El Niño variability in the equatorial Pacific from coral microatolls, Geophys. Res. Lett., 30, 1358, doi:10.1029/2002GL015868, 7., , and (
- Issue published online: 2 APR 2003
- Article first published online: 2 APR 2003
- Manuscript Accepted: 13 JAN 2003
- Manuscript Revised: 10 OCT 2002
- Manuscript Received: 12 JUL 2002
- Coral paleoclimatology;
- Sea surface temperature;
- Equatorial Pacific Ocean;
 Oxygen isotope ratios in Porites microatolls from Christmas Island in the central Pacific provide high-resolution proxy records of El Niño-Southern Oscillation (ENSO) variability since 3.8 thousand years ago (ka). Compared with modern microatolls, reconstructions from fossil microatolls imply that interannual variations in ENSO sea-surface temperature and precipitation were less intense 3.8–2.8 ka, but more pronounced at 1.7 ka. Amplification of ENSO at ∼2 ka is consistent with precessional changes in insolation seasonality, but exceeds model predictions and may reflect stronger rainfall teleconnections through enhanced interaction between the Southern Oscillation and the Pacific Intertropical Convergence Zone.