Ocean biogeochemistry

Approximately half of the carbon dioxide presently released by human activity stays in the atmosphere. The remaining carbon is absorbed by sinks in the land and oceans. It is critically important to know how the 'airborne fraction' of carbon dioxide has varied in the past and may evolve as we move into the future. By better understanding the changing distribution of carbon between the oceans and atmosphere, we can improve our capacity to predict future climate and calculate whether different emissions scenarios might allow us to meet greenhouse gas targets.

Our marine biogeochemical research focuses on the chemical and biological processes involved in ocean carbon transport and ocean-atmosphere carbon exchange. We also look at the role played by other biologically mediated gases within the climate system. We develop and investigate a range of global models which simulate the physical and biological transport of carbon and nutrients around the ocean. 

Key aims

• To identify and improve our understanding of key marine carbon cycle processes.
• To accurately represent the distribution, growth and vertical movement of plankton within the ocean.
• To identify the impact of, and explore the mechanisms behind, marine biogeochemical feedbacks operating within the earth system.