Upper ocean biogeochemistry
Inorganic carbon in the Black Sea
Project Manager: Gernot Friederich
Lead Scientist: Gernot Friederich
This component of the 2003 Black Sea Expedition will
examine details of inorganic carbon distribution across the interfaces
between anoxic and oxygenated layers of the water column. Observations of
the carbon budget will help distinguish between the various abiogenic and
biogenic pathways that have been proposed for the oxidation of reduced
sulfur compounds and the processes occurring in the denitrification zone.
Both heterotrophic and autotrophic organisms may produce significant
changes of total inorganic carbon concentrations in each of the
interfaces, while abiogenic transformations may only change the chemical
equilibrium of the inorganic carbon system.
The detailed chemical profiling of the water column
required for these investigations has been made possible by the pumped
profiling system developed by MBARI. The proposed data set will be
incorporated in physical and process models as part of a collaboration
with colleagues at the University of Washington, University of Miami,
Scripps Institution of Oceanography, and the Middle East Technical University.