Climate study related experiments and observational stations are getting bigger and number of sensors and instruments involved is growing very fast. Large scale experiments like NEON have to deal with hundreds of sensors and instruments. The most effective way to manage such large installations is to incorporate all equipment in to a network. At this session we would like people to share their experience in establishing, maintaining, and managing a fixed environmental sensor networks on or near surface measurements (it does not cover remotely sensed data - satellite imagery, aerial photography, etc.). This session is open for all works about an existing system, planning a completely new network, upgrading an existing system, improving streaming data management, and archiving data.