georefid:2004-006675SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.1126/science.1090110<gco:CharacterString>A transient rise in tropical sea surface temperature during the Paleocene-Eocene thermal maximum</gco:CharacterString>2003-01-01publicationgeorefid:2004-006675doi:10.1126/science.1090110Zachos, James C.University of California at Santa Cruz, Earth and Ocean Sciences Departments, Santa Cruz, CA, United StatesauthorWara, Michael W.Universita degli Studi di Milano, ItalyauthorBohaty, StevenUniversity of North Carolina, United StatesauthorDelaney, Margaret L.Pennsylvania State University, United StatesauthorPetrizzo, Maria RoseauthorBrill, AmandaauthorBralower, Timothy J.authorPremoli Silva, IsabellaauthorAmerican Association for the Advancement of Science, Washington, DC, United StatespublisherdocumentDigitalScience302 (5650)1551-1554The Paleocene-Eocene Thermal Maximum (PETM) has been attributed to a rapid rise in greenhouse gas levels. If so, warming should have occurred at all latitudes, although amplified toward the poles. Existing records reveal an increase in high-latitude sea surface temperatures (SSTs) (8 degrees to 10 degrees C) and in bottom water temperatures (4 degrees to 5 degrees C). To date, however, the character of the tropical SST response during this event remains unconstrained. Here we address this deficiency by using paired oxygen isotope and minor element (magnesium/calcium) ratios of planktonic foraminifera from a tropical Pacific core to estimate changes in SST. Using mixed-layer foraminifera, we found that the combined proxies imply a 4 degrees to 5 degrees C rise in Pacific SST during the PETM. These results would necessitate a rise in atmospheric pCO (sub 2) to levels three to four times as high as those estimated for the late Paleocene.completedStratigraphyaliphatic hydrocarbonsalkanesanomaliescarbon dioxideCenozoicchemical ratiosclimate changecoresEoceneForaminiferageochemistrygreenhouse effecthydrocarbonsInvertebrataisotope ratiosisotopesLeg 198marine sedimentsmethanemicrofossilsNorth PacificNorthwest PacificO-18/O-16Ocean Drilling ProgramODP Site 1209organic compoundsoxygenPacific Oceanpaleo-oceanographyPaleocenepaleoclimatologypaleoenvironmentPaleogenepaleotemperatureplanktonic taxaProtistasalinitysea-surface temperaturesedimentsShatsky Risestable isotopesTertiaryWest Pacificurn:org.iodp:exp:198urnlargerWorkCitationcampaignurn:org.iodp:exp:198:site:1209urnlargerWorkCitationstudyurn:org.iodp:exp:198urnlargerWorkCitationcampaignEnglishgeoscientificInformation158.3000158.310032.390032.4000application/pdfunknownSEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContacthttp://www.sciencemag.org/content/302/5650/1551.full.pdfdownload