New solar tracking interface helps eliminate judgment calls and create an objective assessment of tracker performance each day. ARM file photo. At ARM’s Tropical Western Pacific site, radiometer sensors mounted on solar trackers provide critical radiation balance measurements. If a tracker is off even a small amount, the data from the diffuse radiometers and the…

A late-winter storm in the Midwest could have wreaked havoc at the ARM Program’s Southern Great Plains (SGP) site in northern Oklahoma. Fortunately, the site’s Disaster Plan was successfully implemented. SGP’s 160-acre Central Facility, the heart of the site, is heavily instrumented to collect and monitor atmospheric data collected from in situ and remote-sensing instrument…