This resource provides a unique, integrated view of advanced environmental modeling and observation monitoring. It details data fusion techniques, sensor technology, and open web-servicing methods for managing environmental information and decision-support concepts. The coverage also discusses current legislations and statutory monitoring of the environment at local, regional, national, EU, and international levels. In addition, chapters feature concrete examples of environmental monitoring and decision support topics, such as bathing water quality management, underwater noise monitoring, air quality monitoring, and sensor networks infrastructure for environmental monitoring.