Total Sky Imager at Desert Rock, Nevada, SURFRAD station
Total Sky Imager at Desert Rock, Nevada, SURFRAD station.

SRRB collects data from Total Sky Imagers located at each SURFRAD site. The TSI consists of a web camera suspended over a convex mirror. The mirror has a black sun-blocking stripe, which rotates during the day to protect the camera's sensitive picture element from bright sunlight. Images of the sky are collected by a local computer, and processed into percent cloud cover data. Recent images, taken every 15-minutes, are available from the Boulder, Colorado and Desert Rock, Nevada sites. Daily cloud cover data are available for all sites. One-minute images from all sites are archived, but are not available on the web due to storage constraints. The raw image files may be requested for specific, short time periods.