georefid:2005-029089SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2011-06-23T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.1029/2003PA000892<gco:CharacterString>Forcing of tropical Atlantic sea surface temperatures during the mid-Pleistocene transition</gco:CharacterString>2004-01-01publicationgeorefid:2005-029089doi:10.1029/2003PA000892Schefuss, EnnoRoyal Netherlands Institute for Sea Research, Den Burg, NetherlandsauthorSinninghe Damste, Jaap S.authorJansen, J. H. FredauthorAmerican Geophysical Union, Washington, DC, United StatespublisherdocumentDigitalPaleoceanography19 (4)We compare a new mid-Pleistocene sea surface temperature (SST) record from the eastern tropical Atlantic to changes in continental ice volume, orbital insolation, Atlantic deepwater ventilation, and Southern Ocean front positions to resolve forcing mechanisms of tropical Atlantic SST during the mid-Pleistocene transition (MPT). At the onset of the MPT, a strong tropical cooling occurred. The change from a obliquity- to a eccentricity-dominated cyclicity in the tropical SST took place at about 650 kyr BP. In orbital cycles, tropical SST changes significantly preceded continental ice-volume changes but were in phase with movements of Southern Ocean fronts. After the onset of large-amplitude 100-kyr variations, additional late glacial warming in the eastern tropical Atlantic was caused by enhanced return flow of warm waters from the western Atlantic driven by strong trade winds. Pronounced 80-kyr variations in tropical SST occurred during the MPT, in phase with and likely directly forced by transitional continental ice-volume variations. (mod. journ. abstr.)completedQuaternary geologyAntarctic Circumpolar CurrentAtlantic OceanCenozoicclimate changeclimate forcingcouplingcurrentscyclesEast AtlanticeccentricityForaminiferaglacial geologyglaciationGlobigerinaceaGlobigerinidaeGlobigerinoidesGlobigerinoides ruberice sheetsice volumeInvertebrataLeg 175marine environmentmicrofossilsmiddle Pleistoceneobliquity of the eclipticocean currentsOcean Drilling ProgramODP Site 1077orbital forcingpaleo-oceanographypaleoclimatologypaleotemperaturePleistoceneProtistaQuaternaryRotaliinasea-surface temperatureSouth Atlantic CurrentSouthern Oceansubantarctic regionstropical environmentvolumeurn:org.iodp:exp:175urnlargerWorkCitationcampaignurn:org.iodp:exp:175:site:1077urnlargerWorkCitationstudyurn:org.iodp:exp:175urnlargerWorkCitationcampaignEnglishgeoscientificInformation10.261110.2611-5.1048-5.1048PA4029application/pdfunknownSEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContacthttp://www.agu.org/journals/pa/pa0404/2003PA000892/2003PA000892.pdfdownload