In this short communication we highlight the NATO Advanced Research Workshop (ARW) "Atmospheric Boundary Layers: Modelling and Applications for 2 Environmental Security", held in Dubrovnik, Croatia, 18-22 April 2006 (http://pbl-nato-arw.dmi.dk) and the "Summer School on Air-Sea Interaction" to be held in 4 Helsinki, Finland, 28/08-01/09/2006 (http://www.scasi.fi).