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dc.contributor.authorSánchez Goñi, M.F
dc.contributor.authorFerretti, P.
dc.contributor.authorPolanco-Martínez, J.M.
dc.contributor.authorRodrigues, T.
dc.contributor.authorAlonso-García, M.
dc.contributor.authorRodríguez Tovar, Francisco Javier
dc.contributor.authorDorador, J.
dc.contributor.authorDesprat, S.
dc.date.accessioned2023-05-26T14:01:12Z
dc.date.available2023-05-26T14:01:12Z
dc.date.issued2019
dc.identifier.citationEarth and Planetary Science Letters: 511: 117-129-129 (2019)es_ES
dc.identifier.issn0012-821X
dc.identifier.urihttp://hdl.handle.net/10810/61236
dc.description.abstractThe MIS 17 interglacial, ~715 675 ka, marks the end of the Mid-Pleistocene Transition as intensified, long and asymmetrical 100-kyr ice age cycles became eminently established. Increasing arrival of moisture to the Northern Hemisphere high latitudes, resulting from the northwestward migration of the Subpolar Front and the intensification of the Norwegian Greenland Seas (NGS) convection, has been put forward to explain the emergence of this quasi-periodic 100-kyr cycle. However, testing this hypothesis is problematic with the available North Atlantic precipitation data. Here we present new pollen-based quantitative seasonal climate reconstructions from the southwestern Iberian margin that track changes in the position and intensity of the westerlies. Our data compared to changes in North Atlantic deep and surface water conditions show that MIS 17 interglacial was marked by three major changes in the direction and strength of the westerlies tightly linked to oceanographic changes. In particular, we report here for the first time a drastic two-steps northward shift of the westerlies centered at ~693 ka that ended up with the sustained precipitation over southern European. This atmospheric reorganization was associated with northwestward migration of the Subpolar Front, strengthening of the NGS deep water formation and cooling of the western North Atlantic region. This finding points to the substantial arrival of moisture to the Northern Hemisphere high latitudes at the time of the decrease in summer energy and insolation contributing to the establishment of strong 100-kyr cycles. © 2019 Elsevier B.V.es_ES
dc.description.sponsorshipJ.M.P.M. was funded by a Basque Government post-doctoral fellowship ( POS_2015_1_0006 ) and MAG and TR by FCT ( PTDC/MAR-PRO/3396/2014 , UID/Multi/04326/2013 , SFRH/BPD/96960/2013 , SFRH/BPD/108600/2015 ). We acknowledge C. Morales-Molino and D. Oliveira for the reading of the manuscript and V. Hanquiez for drawing Figs. 1 and 9 . We are grateful to Ludovic Devaux for pollen sample preparation. J.M.P.M. was funded by a Basque Government post-doctoral fellowship (POS_2015_1_0006) and MAG and TR by FCT (PTDC/MAR-PRO/3396/2014, UID/Multi/04326/2013, SFRH/BPD/96960/2013, SFRH/BPD/108600/2015). We acknowledge C. Morales-Molino and D. Oliveira for the reading of the manuscript and V. Hanquiez for drawing Figs. 1 and 9. We are grateful to Ludovic Devaux for pollen sample preparation.es_ES
dc.language.isoenges_ES
dc.publisherEarth and Planetary Science Letterses_ES
dc.relationinfo:eu-repo/grantAgreement/Basquegovernment/POS_2015_1_0006es_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/es/*
dc.subjectMid-Pleistocene Transitiones_ES
dc.subjectpollenes_ES
dc.subjectprecipitationes_ES
dc.subjectsouthwestern Europees_ES
dc.subjecttemperaturees_ES
dc.subjectvegetationes_ES
dc.titlePronounced northward shift of the westerlies during MIS 17 leading to the strong 100-kyr ice age cycleses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.holder© 2019 Elsevier B.V. All rights reserved.es_ES
dc.rights.holderAtribución-NoComercial-CompartirIgual 3.0 España*
dc.relation.publisherversionhttps://dx.doi.org/10.1016/j.epsl.2019.01.032es_ES
dc.identifier.doi10.1016/j.epsl.2019.01.032


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© 2019 Elsevier B.V. All rights reserved.
Except where otherwise noted, this item's license is described as © 2019 Elsevier B.V. All rights reserved.