Articles | Volume 16, issue 8
Biogeosciences, 16, 1705–1727, 2019
https://doi.org/10.5194/bg-16-1705-2019
Biogeosciences, 16, 1705–1727, 2019
https://doi.org/10.5194/bg-16-1705-2019

Research article 25 Apr 2019

Research article | 25 Apr 2019

Long-chain diols in settling particles in tropical oceans: insights into sources, seasonality and proxies

Marijke W. de Bar et al.

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Long chain diols in settling particles in tropical oceans: insights into sources, seasonality and proxies Marijke W. de Bar, Jenny Ullgren, Robert C. Thunell, Stuart G. Wakeham, Geert-Jan A. Brummer, Jan-Berend W. Stuut, Jaap S. Sinninghe Damsté, and Stefan Schouten https://doi.pangaea.de/10.1594/PANGAEA.898278

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Short summary
We analyzed sediment traps from the Cariaco Basin, the tropical Atlantic and the Mozambique Channel to evaluate seasonal imprints in the concentrations and fluxes of long-chain diols (LDIs), in addition to the long-chain diol index proxy (sea surface temperature proxy) and the diol index (upwelling indicator). Despite significant degradation, LDI-derived temperatures were very similar for the sediment traps and seafloor sediments, and corresponded to annual mean sea surface temperatures.
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