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Seasonality of U[superscript K’]₃₇ temperature estimates as inferred from sediment trap data

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Title Seasonality of U[superscript K’]₃₇ temperature estimates as inferred from sediment trap data
Names Rosell-Mele, Antoni (creator)
Prahl, Fredrick G. (creator)
Date Issued 2013-07-15 (iso8601)
Note This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by Elsevier and can be found at: http://www.journals.elsevier.com/quaternary-science-reviews/.
Abstract The seasonality of sea surface temperatures (SST) estimated from the alkenone-U[superscript K’]₃₇ index has been a debated issue since the development of the proxy. Using a compilation of
sediment trap time series data from 34 sampling locations, we show that the seasonality of
maximum alkenone flux in sediment traps varies markedly across the oceans, depending not
only on latitude and light availability but also on local oceanographic conditions. The
seasonality of the alkenone flux to sediments may also be shaped by the complexity of
sedimentation processes and a consistent, globally applicable, seasonal pattern is not
apparent. Nevertheless, U[superscript K’]₃₇ values display a world ocean scale correlation with mean
annual SSTs (0 m) that closely resembles the standard calibration equation now established
for modern surface sediment records. Thus, with a few notable exceptions at oceanographic
locations proximate to major hydrographic fronts, it can be concluded that the integrated
sedimentation patterns for U[superscript K’]₃₇ measured in sediment trap time series provide a measure of annual mean SST.
Genre Article
Topic Alkenone
Identifier Rosell-Mele, A., & Prahl, F. G. (2013). Seasonality of U-37(K)' temperature estimates as inferred from sediment trap data. Quaternary Science Reviews, 72, 128-136. doi:10.1016/j.quascirev.2013.04.017

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