NEMO-Arctic12 scaling tests
The Arctic Ocean is especially vulnerable to change as the ecosystem has adapted to the severe conditions over thousands of years. The recent increase in anthropogenic emissions of greenhouse gases now drive a profound and rapid change. Already today we observe decreasing sea-ice cover and increasing river runoff, coastal erosion of thawed permafrost, and ocean warming. This impacts the Arctic Ocean’s capacity to take up and store the excessive carbon, which feedbacks on the global climate, as the changes drive complex interactions between climate change and the marine ecosystem. Increasing oceanic carbon dioxide concentrations also drive ocean acidification. Our understanding is limited to coarse resolution earth system models and sparse observations making it challenging to disentangle driving factors and consequences.
Here we develop a high-resolution ocean–sea-ice–biogeochemical model to study how the climate interacts with the biogeochemical cycles in the ocean.