ALOMAR, the Arctic Lidar Observatory for Middle Atmosphere Research, is a multi-national facility where scientific groups from (at present) six nations investigate the atmosphere with their instruments. Through the EU-Commission's programme "Improving Human Resources", the ALOMAR ARI offers scientists from member states of the European Union and associated countries access to selected instruments. Projects will receive access to the facility free of charge, and reimbursement of travel and subsistence cost. Transport costs for scientific instruments are also covered. The ALOMAR ARI is defined as a part of ALOMAR. This part includes the observatory building and all instruments in which Norwegian institutions have invested funding and development efforts.