Estimating particulate organic matter flux from in-situ optics: A framework for correcting for suspended particles and incorporating depth-dependent degradation
Nasrollah Moradi,Lili Hufnagel,Simon Ramondenc,Clara M. Flintrop,Rainer Kiko,Tim Fischer,Helena Hauss,Arne Körtzinger,Gerhard Fischer,and Morten H. Iversen
Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
MARUM and University of Bremen, Bremen, Germany
current address: Sorbonne University, CNRS, Laboratoire d'Océanographie de Villefranche, Villefranche-sur-Mer, France
Clara M. Flintrop
Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
ccurrent address: The Fredy & Nadine Herrmann Institute of Earth Sciences, Hebrew University of Jerusalem, Jerusalem, Israel; The Interuniversity Institute for Marine Sciences, Eilat, Israel
The presented framework advances estimates of particulate organic carbon and nitrogen fluxes in the water column derived from in situ imaging-based particle size distribution data. By accounting for non-sinking particles, depth-dependent degradation, and a dynamic carbon-to-nitrogen ratio that evolves with particle age during settling, it provides a more accurate representation of organic matter export to the deep ocean.
The presented framework advances estimates of particulate organic carbon and nitrogen fluxes in...