Tables 1 and 2 presents a summary of the current measurement and sampling programs at the Air Chemistry Observatory. The majority of the analyses of samples (air, aerosol and snow) has to be performed in the home laboratories. There is the possibility of performing on-site ion chromatographic analyses. Generally, the observatory functions as a platform for both, long-term "monitoring" tasks and particular "case studies" during one or two over-wintering periods or during summer seasons only.