Jens Olaf Pepke Pedersen: The Global Carbon Cycle in an Earth System model

Klimarealistene P.O. Box 33, 3901 Porsgrunn Norway

ISSN: 2703-9072


Vol. 3.4 (2023) p. 368

Jens Olaf Pepke Pedersen
DTU Space, Centrifugevej 356, DK-2800 Kgs. Lyngby, Denmark

Keywords: Carbon Cycle; Atmospheric CO2; Emissions: Earth system model Submitted 2023-09-20, Accepted 2023-09-24.

Earth system models are useful tools for understanding past global changes and for projecting future global change. The carbon cycle is a key feature of the Earth system and thus carbon cycle components are central for Earth system models. Among the important components are the ocean, the land biosphere, and the atmosphere, and the challenge is to model both these components and the interactions between them.

The influence of anthropogenic CO2 emissions on the carbon cycle is a driver of ocean and ter- restrial sinks, and modelling interactions between Earth’s climate and carbon cycle requires knowledge of at number of feedbacks involved that amplify or dampen carbon emissions.

For example, increasing atmospheric CO2 increases the efficiency of photosynthesis, which se- questers CO2, just as it increases the concentration gradient between the atmosphere and the ocean which drives CO2 dissolution into the ocean.

I the presentation a few examples of the carbon-climate interaction will be discussed, and some of the certainties and uncertainties will be highlighted.

Editors:. Jan-Erik Solheim and Stein Storlie Bergsmark.
Funding: This research did not receive any funding.

Science of Climate Change