Changes in ocean currents and temperature affect biology on every level of the food chain.Revealing these impacts of climate change on marine organisms requires understanding of several conditions:
- The physical environment and its variability at different time and space scales
- How the organisms respond to different environmental conditions
- How they interact with each other in the food chain
Depending on human will and abillity to regulate future emission, there are several CO2 scenarios.A moderate future scenario will give these temperature changes for the Nordic Seas in 2050.
The natural variability is expected to continue into the 21st century overlaying a global warming. The question is wether this will result in a local transient stabilization of temperatures before a massive warming in the mid 21st century. Natural variability on top of the global warming trend will result in temperatures beyond those of the 20th century.