Article Dans Une Revue Frontiers in Marine Science Année : 2020

Sinking Organic Particles in the Ocean—Flux Estimates From in situ Optical Devices

Adrian B Burd
  • Fonction : Auteur
Louise J Darroch
  • Fonction : Auteur
Jean-Olivier Irisson
Morten H Iversen
  • Fonction : Auteur
Rainer Kiko
Dhugal Lindsay
  • Fonction : Auteur
Catarina R Marcolin
  • Fonction : Auteur
Andrew M P Mcdonnell
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Klas Ove Möller
  • Fonction : Auteur
Uta Passow
  • Fonction : Auteur
Sandy Thomalla
  • Fonction : Auteur
Thomas William Trull
  • Fonction : Auteur
Anya M Waite
  • Fonction : Auteur

Résumé

Optical particle measurements are emerging as an important technique for understanding the ocean carbon cycle, including contributions to estimates of their downward flux, which sequesters carbon dioxide (CO2) in the deep sea. Optical instruments can be used from ships or installed on autonomous platforms, delivering much greater spatial and temporal coverage of particles in the mesopelagic zone of the ocean than traditional techniques, such as sediment traps. Technologies to image particles have advanced greatly over the last two decades, but the quantitative translation of these immense datasets into biogeochemical properties remains a challenge. In particular, advances are needed to enable the optimal translation of imaged objects into carbon content and sinking velocities. In addition, different devices often measure different optical properties, leading to difficulties in comparing results. Here we provide a practical overview of the challenges and potential of using these instruments, as a step toward improvement and expansion of their applications.

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hal-03043052 , version 1 (07-12-2020)

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Sarah Lou Carolin Giering, Emma Louise Cavan, Sünnje Linnéa Basedow, Nathan Briggs, Adrian B Burd, et al.. Sinking Organic Particles in the Ocean—Flux Estimates From in situ Optical Devices. Frontiers in Marine Science, 2020, 6, pp.e00834. ⟨10.3389/fmars.2019.00834⟩. ⟨hal-03043052⟩
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