Glossary
The English version of our glossary is currently under construction and will be regularly updated.
Dissolved inorganic carbon (DIC)
Dissolved inorganic carbon (DIC) refers to the total amount of dissolved inorganic carbon in water. It can be found in various carbonate species (bicarbonates, carbon dioxide and carbonates). The ratios of the various forms influence the pH value of the water and can reduce surface water’s ability to absorb CO2.
The total amount of dissolved inorganic carbon (DIC) in water. This includes carbon dioxide (CO2), carbonates (like calcium carbonate and magnesium carbonate) and bicarbonates. DIC is an important part of the natural carbon cycle, given its role in regulating pH and maintaining the chemical equilibrium of the ocean. It is also an important factor with regard to determining the carbon dioxide concentration in the atmosphere, given the exchanges that take place between marine and atmospheric carbon pools. DIC can stem from a number of sources, e.g. the dissolution of CO2 from the atmosphere or the weathering of carbonates in sedimentary rock. It can also be affected by biological processes like photosynthesis or the respiration of marine organisms.