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We use biomarker\u2010based proxy records such as the alkenone unsaturated index to estimate sea surface temperature (SST), the total alkenone concentration to reconstruct phytoplankton productivity, and terrestrial biomarkers to evaluate the continental input. The results extend the existing biomarker record, namely the SST for the Iberian Margin, back to the sixth climatic cycle (580 ka). A general trend of stable interglacials contrasts with glacial periods and glacial inceptions which are marked by high\u2010frequency variability. Thus, several short\u2010lived climatic coolings were identified by large SST decreases, the occurrence of ice\u2010rafted detritus and high percentages of the tetraunsaturated alkenone C<jats:sub>37:4<\/jats:sub>. Some of these events were extremely cold and similar in their general trends to the well\u2010known Heinrich events of the last glaciation. We identified eight Heinrich\u2010type events between 580 and 300 ka. The general deglaciation pattern detected between MIS 15 and MIS 9 is similar in their general trends to that characterizing the more recent climatic cycles, i.e., marked by two coolings separated by a short warming episode which may reflect the southward, northward, and southward migration of the Polar Front.<\/jats:p>","DOI":"10.1029\/2010pa001927","type":"journal-article","created":{"date-parts":[[2011,2,14]],"date-time":"2011-02-14T22:21:36Z","timestamp":1297722096000},"source":"Crossref","is-referenced-by-count":110,"title":["Iberian Margin sea surface temperature during MIS 15 to 9 (580\u2013300 ka): Glacial suborbital variability versus interglacial stability"],"prefix":"10.1029","volume":"26","author":[{"given":"T.","family":"Rodrigues","sequence":"first","affiliation":[{"name":"Unidade Geologia Marinha LNEG  Lisbon Portugal"},{"name":"CIMAR Associated Laboratory  Porto Portugal"}]},{"given":"A. H. 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