This Survey is divided into three parts: - Environmental Monitoring and Research Programmes; - Data and Information System Programmes; and - Harmonization and Standardization Activities. Each part contains a list of programmes and activities, which are expanded upon individually. Entries in each section have been formatted according to standard criteria to ensure uniformity and compatibility of the information. Each entry is intended to provide the reader with information on the type of programme, basic background information on areas of interest and programme objectives, more specific related information, and cooperation with other organizations or institutions. Although the programmes have been divided according to their main subject, cross-references are given where appropriate reflecting the interconnection of programmes world-wide.