The Nordic Centre for Studies of Ecosystem Carbon Exchange and its Interactions with the Climate System (NECC) is a virtual Centre consisting of 14 research groups from institutes in Denmark, Iceland, Sweden and Finland. With the creation of this centre the existing Nordic measurements of carbon dioxide and methane exchange from different ecosystems are linked in one Nordic flux-network. Currently 47 sites are within the Centre, including 26 eddy-flux sites with measurements in forests, agricultural land, wetlands and above lakes. The aim of the Centre is to obtain a better understanding of the factors regulating the carbon balance of typical sub-arctic and boreal ecosystems and to improve the co-operation in both research and education in the field of carbon exchange.

The NECC is funded by the Nordic Centre of Excellence (NCoE) Pilot Programme from 2003 to 2007. The NCoE was initiated by the Joined Committee of the Nordic Natural Science Research Councils (NOS-N), the Nordic Council of Ministers and the NorFA.