The target audience comprises the Earth System Modelling community and specifically those individuals active in AIMES, the EO community developing products for Earth System Models and those individuals already actively participating in the Northern High Latitude Study. Key individuals in the organization of the International Polar Year should also be sought as well as researchers active in the countries directly affected (USA (Alaska), Canada, Russia and the Scandinavian countries). To make the meeting effective the participating audience should be limited to less than 100 with 60 being an ideal target.