• Login
    About WHOAS
    View Item 
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Geology and Geophysics (G&G)
    • View Item
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Geology and Geophysics (G&G)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of WHOASCommunities & CollectionsBy Issue DateAuthorsTitlesKeywordsThis CollectionBy Issue DateAuthorsTitlesKeywords

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    Corals record persistent multidecadal SST variability in the Atlantic Warm Pool since 1775 AD

    Thumbnail
    View/Open
    2012PA002313.pdf (1.026Mb)
    Date
    2012-09-29
    Author
    Vasquez-Bedoya, Luis Fernando  Concept link
    Cohen, Anne L.  Concept link
    Oppo, Delia W.  Concept link
    Blanchon, Paul  Concept link
    Metadata
    Show full item record
    Citable URI
    https://hdl.handle.net/1912/5522
    As published
    https://doi.org/10.1029/2012PA002313
    DOI
    10.1029/2012PA002313
    Keyword
     Atlantic Warm Pool; Atlantic multidecadal variability; Little Ice Age; Sr/Ca; Coral; Sea surface temperature 
    Abstract
    Accurate low-latitude sea surface temperature (SST) records that predate the instrumental era are needed to put recent warming in the context of natural climate variability and to evaluate the persistence of lower frequency climate variability prior to the instrumental era and the possible influence of anthropogenic climate change on this variability. Here we present a 235-year-long SST reconstruction based on annual growth rates (linear extension) of three colonies of the Atlantic coral Siderastrea siderea sampled at two sites on the northeastern Yucatan Peninsula, Mexico, located within the Atlantic Warm Pool (AWP). AWP SSTs vary in concert the Atlantic Multidecadal Oscillation (AMO), a basin-wide, quasiperiodic (∼60–80 years) oscillation of North Atlantic SSTs. We demonstrate that the annual linear growth rates of all three coral colonies are significantly inversely correlated with SST. We calibrate annual linear growth rates to SST between 1900 and 1960 AD. The linear correlation coefficient over the calibration period is r = −0.77 and −0.66 over the instrumental record (1860–2008 AD). We apply our calibration to annual linear growth rates to extend the SST record to 1775 AD and show that multidecadal SST variability has been a persistent feature of the AWP, and likely, of the North Atlantic over this time period. Our results imply that tropical Atlantic SSTs remained within 1°C of modern values during the past 225 years, consistent with a previous reconstruction based on coral growth rates and with most estimates based on the Mg/Ca of planktonic foraminifera from marine sediments.
    Description
    Author Posting. © American Geophysical Union, 2012. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Paleoceanography 27 (2012): PA3231, doi:10.1029/2012PA002313.
    Collections
    • Geology and Geophysics (G&G)
    Suggested Citation
    Article: Vasquez-Bedoya, Luis Fernando, Cohen, Anne L., Oppo, Delia W., Blanchon, Paul, "Corals record persistent multidecadal SST variability in the Atlantic Warm Pool since 1775 AD", Paleoceanography 27 (2012): PA3231, DOI:10.1029/2012PA002313, https://hdl.handle.net/1912/5522
     

    Related items

    Showing items related by title, author, creator and subject.

    • Thumbnail

      Evidence of multidecadal salinity variability in the eastern tropical North Atlantic 

      Moses, Christopher S.; Swart, Peter K.; Rosenheim, Brad E. (American Geophysical Union, 2006-08-17)
      Ocean circulation and global climate are strongly influenced by seawater density, which is itself controlled by salinity and temperature. Although adequate instrumental sea-surface temperature (SST) records exist for ...
    • Thumbnail

      Mechanisms of multidecadal Atlantic meridional overturning circulation variability diagnosed in depth versus density space 

      Kwon, Young-Oh; Frankignoul, Claude (American Meteorological Society, 2014-12-15)
      Multidecadal variability of the Atlantic meridional overturning circulation (AMOC) is examined based on a comparison of the AMOC streamfunctions in depth and in density space, in a 700-yr present-day control integration ...
    • Thumbnail

      Stochastically-driven multidecadal variability of the Atlantic meridional overturning circulation in CCSM3 

      Kwon, Young-Oh; Frankignoul, Claude (2011-02-02)
      The Atlantic meridional overturning circulation (AMOC) in the last 250 years of the 700-yearlong present-day control integration of the Community Climate System Model version 3 with T85 atmospheric resolution exhibits a ...
    All Items in WHOAS are protected by original copyright, with all rights reserved, unless otherwise indicated. WHOAS also supports the use of the Creative Commons licenses for original content.
    A service of the MBLWHOI Library | About WHOAS
    Contact Us | Send Feedback | Privacy Policy