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    Increased hurricane frequency near Florida during Younger Dryas Atlantic Meridional Overturning Circulation slowdown

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    Toomey_et_al_2017_WHOAS.pdf (621.5Kb)
    Date
    2017-10
    Author
    Toomey, Michael R.  Concept link
    Korty, Robert  Concept link
    Donnelly, Jeffrey P.  Concept link
    van Hengstum, Peter  Concept link
    Curry, William B.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/9392
    As published
    https://doi.org/10.1130/G39270.1
    Abstract
    The risk posed by intensification of North Atlantic hurricane activity remains controversial, in part due to a lack of available storm proxy records that extend beyond the relatively stable climates of the late Holocene. Here we present a record of storm-triggered turbidite deposition offshore the Dry Tortugas, south Florida, USA, that spans abrupt transitions in North Atlantic sea-surface temperature and Atlantic Meridional Overturning Circulation (AMOC) during the Younger Dryas (12.9–11.7 k.y. B.P.). Despite potentially hostile conditions for cyclogenesis in the tropical North Atlantic at this time, our record and numerical experiments suggest that strong hurricanes may have regularly impacted Florida. Less severe surface cooling at mid-latitudes (~20–40°N) than across much of the tropical North Atlantic (~10–20°N) in response to AMOC reduction may best explain strong hurricane activity during the Younger Dryas near the Dry Tortugas and, potentially, along the entire southeastern coast of the United States.
    Description
    Author Posting. © The Author(s), 2017. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution. The definitive version was published in Geology 45 (2017): 1047-1050, doi:10.1130/G39270.1.
    Collections
    • Geology and Geophysics (G&G)
    Suggested Citation
    Preprint: Toomey, Michael R., Korty, Robert, Donnelly, Jeffrey P., van Hengstum, Peter, Curry, William B., "Increased hurricane frequency near Florida during Younger Dryas Atlantic Meridional Overturning Circulation slowdown", 2017-10, https://doi.org/10.1130/G39270.1, https://hdl.handle.net/1912/9392
     
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