Biogeochemical aspects

Abstract

Biogeochemical modeling of the sea calls for consideration of many important processes (Figure 4.1). The description of a marine system is often divided into physical, chemical, and biological components. The physical component includes all aspects of currents, mixing, light penetration, stratification, and ice; in connection with this, we often speak of the physical pump bringing denser surface water down to deeper layers and advecting bottom water up to the surface layers. The chemical component includes various aspects of chemical reactions and involves equations based on chemical reactions and stoichiometrics.