Articles | Volume 14, issue 12
https://doi.org/10.5194/cp-14-1893-2018
https://doi.org/10.5194/cp-14-1893-2018
Research article
 | 
11 Dec 2018
Research article |  | 11 Dec 2018

A stalagmite test of North Atlantic SST and Iberian hydroclimate linkages over the last two glacial cycles

Rhawn F. Denniston, Amanda N. Houts, Yemane Asmerom, Alan D. Wanamaker Jr., Jonathan A. Haws, Victor J. Polyak, Diana L. Thatcher, Setsen Altan-Ochir, Alyssa C. Borowske, Sebastian F. M. Breitenbach, Caroline C. Ummenhofer, Frederico T. Regala, Michael M. Benedetti, and Nuno F. Bicho

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Cited articles

Asmerom, Y., Polyak, V., and Burns, S.: Variable winter moisture in the southwestern United States linked to rapid glacial climate shifts, Nat. Geosci., 3, 114–117, 2010. 
Baker, A., Ito, E., Smart, P., and McEwan, R.: Elevated and variable values of 13C in speleothems in a British cave system, Chem. Geol., 136, 263–270, 1997. 
Barker, S., Knorr, G., Edwards, R. L., Parrenin, F., Putnam, A. E., Skinner, L. C., Wolff, E., and Ziegler, M.: 800,000 years of abrupt climate variability, Science, 334, 347–351, 2011. 
Bar-Matthews, M., Ayalon, A., Gilmour, M., Matthews, A., and Hawkesworth, C. J.: Sea-land oxygen isotopic relationships from planktonic foraminifera and speleothems in the Eastern Mediterranean region and their implication for paleo-rainfall during interglacials intervals, Geochim. Cosmochim. Ac., 67, 3181–3199, 2003. 
Barnston, A. G. and Livezey, R. E.: Classification, seasonality, and persistence of low-frequency atmospheric circulation patterns, Mon. Weather Rev., 115, 1083–1126, 1987. 
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The sediment deposited off the coast of Portugal includes the remains of marine organisms and pollen washed to sea from Iberia. Analysis of both the pollen and the ocean sediments has revealed that the type and density of vegetation on land changed in concert with shifts in ocean temperature over centuries to tens of millennia. Proxies for climate in Portuguese stalagmites from the last two glacial periods show precipitation was reduced when sea surface temperatures fell.