Publication Abstracts
O'Connor et al. 2021
O'Connor, G.K., K.M. Cobb, H.R Sayani, A.R. Atwood, P.R. Grothe, S. Stevenson, J.K Baum, T. Chen, D. Claar, N. Hitt, J. Lynch-Stieglitz, R.A. Mortlock, , and R.M. Walter, 2021: Coral oxygen isotope and in situ records capture the 2015/2016 El Niño event in the central equatorial Pacific. Geophys. Res. Lett., 48, no. 24, e2021GL094036, doi:10.1029/2021GL094036.
Coral oxygen isotopes (δ18O) from the central equatorial Pacific provide monthly-resolved records of El Niño-Southern Oscillation (ENSO) activity over past centuries to millennia. However, calibration studies using in situ data to assess the relative contributions of warming and freshening to coral δ18O records are exceedingly rare. Furthermore, the fidelity of coral δ18O records under the most severe thermal stress events is difficult to assess. Here, we present six coral δ18O records and in situ temperature, salinity, and seawater δ18O data from Kiritimati Island (2°N, 15°W) spanning the very strong 2015/16 El Niño event. Local sea surface temperature (SST) anomalies of +2.4±0.4°C and seawater δ18O anomalies of -0.19±0.02‰ contribute to the observed coral δ18O anomalies of -0.58±0.05‰, consistent with a ∼70% contribution from SST and ∼30% from seawater δ18O. Our results demonstrate that Kiritimati coral δ18O records can provide reliable reconstructions even during the largest class of El Niño events.
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BibTeX Citation
@article{oc00100k,
author={O'Connor, G. K. and Cobb, K. M. and Sayani, H. R and Atwood, A. R. and Grothe, P. R. and Stevenson, S. and Baum, J. K and Chen, T. and Claar, D. and Hitt, N. and Lynch-Stieglitz, J. and Mortlock, R. A. and Schmidt, G. A. and Walter, R. M.},
title={Coral oxygen isotope and in situ records capture the 2015/2016 El Niño event in the central equatorial Pacific},
year={2021},
journal={Geophysical Research Letters},
volume={48},
number={24},
pages={e2021GL094036},
doi={10.1029/2021GL094036},
}
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RIS Citation
TY - JOUR ID - oc00100k AU - O'Connor, G. K. AU - Cobb, K. M. AU - Sayani, H. R AU - Atwood, A. R. AU - Grothe, P. R. AU - Stevenson, S. AU - Baum, J. K AU - Chen, T. AU - Claar, D. AU - Hitt, N. AU - Lynch-Stieglitz, J. AU - Mortlock, R. A. AU - Schmidt, G. A. AU - Walter, R. M. PY - 2021 TI - Coral oxygen isotope and in situ records capture the 2015/2016 El Niño event in the central equatorial Pacific JA - Geophys. Res. Lett. JO - Geophysical Research Letters VL - 48 IS - 24 SP - e2021GL094036 DO - 10.1029/2021GL094036 ER -
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