(AC)³  adresses five major scientific focus areas represented by five project Clusters A – E. Cluster speaker are in italic.

Cluster A:

Fluxes in the Arctic Boundary Layer

Cluster B:

Clouds, Aerosols & Water Vapour

Cluster C:

Ocean, Atmosphere & Sea Ice Interactions

Cluster D:

Atmospheric Circulation & Transport

Cluster E:

Integration & Synthesis