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    Regional and global sea-surface temperatures during the last interglaciation


    Hoffman, Jeremy S. and Clarke, Peter U. and Parnell, Andrew C. and He, Feng (2017) Regional and global sea-surface temperatures during the last interglaciation. Science, 355 (6322). pp. 276-279. ISSN 0036-8075

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    Abstract

    The last interglaciation (LIG, 129 to 116 thousand years ago) was the most recent time in Earth’s history when global mean sea level was substantially higher than it is at present. However, reconstructions of LIG global temperature remain uncertain, with estimates ranging from no significant difference to nearly 2°C warmer than present-day temperatures. Here we use a network of sea-surface temperature (SST) records to reconstruct spatiotemporal variability in regional and global SSTs during the LIG. Our results indicate that peak LIG global mean annual SSTs were 0.5 ± 0.3°C warmer than the climatological mean from 1870 to 1889 and indistinguishable from the 1995 to 2014 mean. LIG warming in the extratropical latitudes occurred in response to boreal insolation and the bipolar seesaw, whereas tropical SSTs were slightly cooler than the 1870 to 1889 mean in response to reduced mean annual insolation.

    Item Type: Article
    Keywords: Atlantic; Climate; CO2; Environmental aspects; Sea level; Ocean temperature;
    Academic Unit: Faculty of Science and Engineering > Mathematics and Statistics
    Faculty of Science and Engineering > Research Institutes > Hamilton Institute
    Item ID: 11756
    Identification Number: https://doi.org/10.1126/science.aai8464
    Depositing User: Andrew Parnell
    Date Deposited: 20 Nov 2019 14:38
    Journal or Publication Title: Science
    Publisher: American Association for the Advancement of Science
    Refereed: Yes
    URI:

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