georefid:2013-034521SEDIS Publication Catalogue

ana.macario@awi.de

http://sedis.iodp.org/pub-catalogue/informationpointOfContact2013-07-08T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=10.1016/j.quascirev.2011.02.0052011-01-01publicationgeorefid:2013-034521doi:10.1016/j.quascirev.2011.02.005Menviel, L.University of Bern, Physics Institute, Bern, SwitzerlandauthorTimmermann, A.University of Hawai'i, United StatesauthorTimm, O. ElisonUniversite de Liege, BelgiumauthorMouchet, A.authorElsevier, InternationalpublisherdocumentHardcopyQuaternary Science Reviews30 (9-10)1155-1172Using an Earth system model of intermediate complexity forced by continuously varying boundary conditions and a hypothetical profile of freshwater forcing, the model simulates Heinrich event 1 (H1), the Bolling warm period, the Older Dryas, the Antarctic Cold Reversal (ACR) and the Younger Dryas in close agreement with paleo-proxy data from different regions worldwide. The ACR can be simulated as the bipolar seesaw response to the AMOC recovery during the termination of H1. However, this study also demonstrates that the amplitude of the ACR can be further amplified by a rapid deglacial retreat of the Antarctic Ice sheets. We suggest that melting from both, the Laurentide and the Antarctic Ice sheets contributed to the sea level rise associated with Meltwater Pulse 1-A (MWP-1A). It is hypothesized that the northern hemispheric source of MWP-1A caused the Older Dryas cooling in the Northern Hemisphere, whereas the Southern Hemispheric source contributed to the ACR. The study also documents that for the majority of paleo-climate proxies considered here, the relative timing can be qualitatively reproduced by the transient modeling experiments. The climate model solution presented here may provide a means to further constrain dating uncertainties of some of paleo-climate proxies during the Last Glacial Termination.completedQuaternary geologyAlboran SeaAntarctic ice sheetAntarcticaAtlantic OceanBollingCariaco BasinCaribbean SeaCenozoicclimate forcingdeglaciationEast PacificHeinrich eventsLaurentide ice sheetLeg 146Leg 161Leg 165Leg 202LOVECLIMMediterranean SeaNorth AtlanticNorth PacificNortheast Pacificnumerical modelsOcean Drilling ProgramODP Site 1002ODP Site 1233ODP Site 893ODP Site 977Older Dryasorbital forcingPacific Oceanpaleo-oceanographypaleoclimatologyPleistoceneQuaternarySanta Barbara Basinsea-level changesSouth PacificSoutheast Pacificupper Pleistoceneupper WeichselianWeichselianWest MediterraneanYounger Dryasurn:org.iodp:exp:146urnlargerWorkCitationcampaignurn:org.iodp:exp:161urnlargerWorkCitationcampaignurn:org.iodp:exp:165urnlargerWorkCitationcampaignurn:org.iodp:exp:202urnlargerWorkCitationcampaignurn:org.iodp:exp:165:site:1002urnlargerWorkCitationstudyurn:org.iodp:exp:165urnlargerWorkCitationcampaignurn:org.iodp:exp:202:site:1233urnlargerWorkCitationstudyurn:org.iodp:exp:202urnlargerWorkCitationcampaignurn:org.iodp:exp:146:site:893urnlargerWorkCitationstudyurn:org.iodp:exp:146urnlargerWorkCitationcampaignurn:org.iodp:exp:161:site:977urnlargerWorkCitationstudyurn:org.iodp:exp:161urnlargerWorkCitationcampaignEnglishgeoscientificInformation-120.0212-1.5719-41.000036.0154