Performance of temperature and productivity proxies based on long-chain alkane-1, mid-chain diols at test: a 5-year sediment trap record from the Mauritanian upwelling

Versteegh, Gerard J. M.; Zonneveld, Karin A. F.; Hefter, Jens; Romero, Oscar E.; Fischer, Gerhard; Mollenhauer, Gesine

doi:https://doi.org/10.5194/bg-19-1587-2022

Articles | Volume 19, issue 5

Biogeosciences, 19, 1587–1610, 2022

https://doi.org/10.5194/bg-19-1587-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Biogeosciences, 19, 1587–1610, 2022

https://doi.org/10.5194/bg-19-1587-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 5

Research article 18 Mar 2022

Research article | 18 Mar 2022

Performance of temperature and productivity proxies based on long-chain alkane-1, mid-chain diols at test: a 5-year sediment trap record from the Mauritanian upwelling

Gerard J. M. Versteegh et al.

Supplement

https://doi.org/10.5194/bg-19-1587-2022-supplement

Data sets

Long 1, midchain alkane-diols analyzed from sediment trap CBeu (off Mauritania). PANGAEA Gerard J. M. Versteegh, Karin A. F. Zonneveld, Jens Hefter, Oscar E. Romero, Gerhard Fischer, and Gesine Mollenhauer https://doi.pangaea.de/10.1594/PANGAEA.940305

Short summary

A 5-year record of long-chain mid-chain diol export flux and composition is presented with a 1- to 3-week resolution sediment trap CBeu (in the NW African upwelling). All environmental parameters as well as the diol composition are dominated by the seasonal cycle, albeit with different phase relations for temperature and upwelling. Most diol-based proxies are dominated by upwelling. The long-chain diol index reflects temperatures of the oligotrophic summer sea surface.