Climate study related experiments and observational stations are getting bigger and number of sensors and instruments involved is growing very fast. Experiments like SPRUCE, NGEE-Arctic, 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.