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Pliocene warmth and gradients

Brierley, C; Burls, N; Ravelo, AC; Fedorov, AV; (2015) Pliocene warmth and gradients. Nature Geoscience , 8 (6) 419 - 420. 10.1038/ngeo2444. Green open access

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Abstract

The Pliocene epoch (5.3–2.6 Ma) generates continued debate as an example of a warm climate with external forcing similar to the present day. O'Brien et al. presented new multi-proxy sea surface temperature (SST) reconstructions from the South China Sea, adding to this debate. Based on their records, and a hypothesized seawater chemistry adjustment to temperature reconstructions previously derived from the Mg/Ca ratios of planktonic foraminifera, they suggest that the western Pacific warm pool was “2 °C warmer than today” in the Pliocene. This contradicts previous evidence of long-term stability in warm pool SSTs, but possibly reconciles temperature reconstructions and climate model simulations. Here we raise several points contrary to those conclusions.

Type: Article
Title: Pliocene warmth and gradients
Open access status: An open access version is available from UCL Discovery
DOI: 10.1038/ngeo2444
Publisher version: http://dx.doi.org/10.1038/ngeo2444
Language: English
Additional information: Copyright © 2015 Macmillan Publishers Limited. All Rights Reserved.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL SLASH
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Dept of Geography
URI: https://discovery.ucl.ac.uk/id/eprint/1469357
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