@article{cf7ea030024a4fca9252b1aa5dd424d9,
title = "Ocean currents generate large footprints in marine palaeoclimate proxies",
abstract = "Fossils of marine microorganisms such as planktic foraminifera are among the cornerstones of palaeoclimatological studies. It is often assumed that the proxies derived from their shells represent ocean conditions above the location where they were deposited. Planktic foraminifera, however, are carried by ocean currents and, depending on the life traits of the species, potentially incorporate distant ocean conditions. Here we use high-resolution ocean models to assess the footprint of planktic foraminifera and validate our method with proxy analyses from two locations. Results show that foraminifera, and thus recorded palaeoclimatic conditions, may originate from areas up to several thousands of kilometres away, reflecting an ocean state significantly different from the core site. In the eastern equatorial regions and the western boundary current extensions, the offset may reach 1.5 °C for species living for a month and 3.0 °C for longer-living species. Oceanic transport hence appears to be a crucial aspect in the interpretation of proxy signals.",
author = "{Van Sebille}, Erik and Paolo Scussolini and Durgadoo, {Jonathan V.} and Peeters, {Frank J.C.} and Arne Biastoch and Wilbert Weijer and Chris Turney and Paris, {Claire B.} and Rainer Zahn",
note = "Funding Information: E.v.S. was supported by the Australian Research Council via grants DE130101336 and CE110001028. W.W. was supported by the Regional and Global Climate Modeling Program of the United States Department of Energy{\textquoteright}s Office of Science. J.V.D. and A.B. acknowledge funding by the Bundesministerium f{\"u}r Bildung und Forschung project SPACES 03G0835A. C.T. acknowledges the support of an ARC Laureate Fellowship (FL100100195). C.B.P. is funded by GOMRI through C-IMAGE Consortium. P.S., J.V.D., F.P., A.B. and R.Z. acknowledge funding by the European Community{\textquoteright}s Seventh Framework Programme (FP7) Marie-Curie Initial Training Network {\textquoteleft}GATEWAYS{\textquoteright} under Grant Agreement 238512. We thank Kelsey Dyez for providing core top material of MD02-2524, Ian Hall and Margit Simon for providing core top material of CD154-18-13P, and the Trace Element Laboratory of Uni Research Bergen for enabling the Mg/Ca measurements. INALT01 CMS experiments were performed at the supercomputer at Kiel University. The OFES simulation was conducted on the Earth Simulator under the support of JAMSTEC.",
year = "2015",
month = mar,
day = "4",
doi = "10.1038/ncomms7521",
language = "English (US)",
volume = "6",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",
}