A generalized model for the scavenging of trace metals in the open ocean—I. Particle cycling

Abstract

A self-consistent one-dimensional particle cycling model has been constructed using two particle size classes, and particle flux, size and sinking rate data. The estimation of particle properties from model size spectra applied to real ocean data is discussed, as are remineralization, and relationship between primary production and flux, and other important aspects of model parameterization. Realistic standing concentrations of particulate material were generated by the model for a steady-state mesotrophic system using flux, sinking rate and particle size data. High rates of remineralization in surface waters make this likely to be the principal pathway for the return of adsorbed or incorporated elements to the dissolved state.