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Next: 6.4.2 Key subroutines and Up: 6.4 DIC Package Previous: 6.4 DIC Package   Contents

6.4.1 Introduction

This is one of the biogeochemical packages handled from the pkg gchem. The main purpose of this package is to consider the cycling of carbon in the ocean. It also looks at the cycling of phosphorous and oxygen. There are five tracers $ DIC$, $ ALK$, $ PO4$, $ DOP$ and $ O2$. The air-sea exchange of CO$ _2$ and O$ _2$ are handled as in the OCMIP experiments (reference). The export of biological matter is computed as a function of available light and PO$ _4$. This export is remineralized at depth according to a Martin curve (again, this is the same as in the OCMIP experiments). There is also a representation of the carbonate flux handled as in the OCMIP experiments. The air-sea exchange on CO$ _2$ is affected by temperature, salinity and the pH of the surface waters. The pH is determined following the method of Follows et al.


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