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

de Bar, Marijke W.; Ullgren, Jenny E.; Thunnell, Robert C.; Wakeham, Stuart G.; Brummer, Geert-Jan A.; Stuut, Jan-Berend W.; Sinninghe Damsté, Jaap S.; Schouten, Stefan

doi:https://doi.org/10.5194/bg-16-1705-2019

Articles | Volume 16, issue 8

https://doi.org/10.5194/bg-16-1705-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-16-1705-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 8

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, Jenny E. Ullgren, Robert C. Thunnell, Stuart G. Wakeham, Geert-Jan A. Brummer, Jan-Berend W. Stuut, Jaap S. Sinninghe Damsté, and Stefan Schouten

Supplement

https://doi.org/10.5194/bg-16-1705-2019-supplement

Data sets

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

Download

Article (8706 KB)
Full-text XML

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.