Multi-species coral Sr/Ca-based sea-surface temperature reconstruction using <i>Orbicella faveolata</i> and <i>Siderastrea siderea</i> from the Florida Straits

Jennifer A. Flannery; Julie N. Richey; Kaustubh Thirumalai; Richard Z. Poore; Kristine L. DeLong

doi:10.1016/j.palaeo.2016.10.022

Multi-species coral Sr/Ca-based sea-surface temperature reconstruction using Orbicella faveolata and Siderastrea siderea from the Florida Straits

Palaeogeography, Palaeoclimatology, Palaeoecology

By: Jennifer A. Flannery, Julie N. Richey, Kaustubh Thirumalai, Richard Z. Poore, and Kristine L. DeLong

https://doi.org/10.1016/j.palaeo.2016.10.022

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Data Releases:
- Coral cores collected in Dry Tortugas National Park, Florida, U.S.A.: Photographs and X-rays
- Multi-species Coral Sr/Ca Based Sea-Surface Temperature Reconstruction Data Using Orbicella faveolata and Siderastrea siderea from Dry Tortugas National Park, Florida
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Abstract

We present new, monthly-resolved Sr/Ca-based sea-surface temperature (SST) records from two species of massive coral, Orbicella faveolata and Siderastrea siderea, from the Dry Tortugas National Park, FL, USA (DTNP). We combine these new records with published data from three additional S. siderea coral colonies to generate a 278-year long multi-species stacked Sr/Ca-SST record from DTNP. The composite record of mean annual Sr/Ca-SST at DTNP shows pronounced decadal-scale variability with a range of 1 to 2°C. Notable cool intervals in the Sr/Ca-derived SST lasting about a decade centered at ~1845, ~1935, and ~1965 are associated with reduced summer Sr/Ca-SST (monthly maxima < 29°C), and imply a reduction in the spatial extent of the Atlantic Warm Pool (AWP). There is significant coherence between the composite DTNP Sr/Ca-SST record and the Atlantic Multidecadal Oscillation (AMO) index, with the AMO lagging Sr/Ca-SST at DTNP by 9 years. Low frequency variability in the Gulf Stream surface transport, which originates near DTNP, may provide a link for the lagged relationship between multidecadal variability at DTNP and the AMO.

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Additional publication details
Publication type	Article
Publication Subtype	Journal Article
Title	Multi-species coral Sr/Ca-based sea-surface temperature reconstruction using Orbicella faveolata and Siderastrea siderea from the Florida Straits
Series title	Palaeogeography, Palaeoclimatology, Palaeoecology
DOI	10.1016/j.palaeo.2016.10.022
Volume	466
Year Published	2017
Language	English
Publisher	Elsevier
Contributing office(s)	St. Petersburg Coastal and Marine Science Center
Description	10 p.
First page	100
Last page	109
Country	United States
State	Florida
Other Geospatial	Straits of Florida
Google Analytic Metrics	Metrics page