Hosted by IMBER (Integrated Marine Biogeochemistry and Ecosystem Research) at Middle East University in Ankara, Turkey, the ClimECO3 summer field school will focus on the interface between marine ecosystem biogeochemistry, physical drivers, food webs and socio-economic systems; with lectures on modelling all of these system processes, as well as model coupling and Earth System models. To help understanding there will be daily “hands-on” sessions with example models that can be usefully explored in the time available.