A very cold and partly cloudy day with temperatures in the single digits this morning, and only rising to the mid-20s (F) during the afternoon. As can be seen below there was an inch or more of ice built up on the sensors this morning.
We mainly worked at the profiler site, doing more checks on the profiler, preparing covers for the RASS (to cover them while we are away or when there's a heavy snow storm), working on software issues, and working on power distribution. The main UPS is reporting battery errors, and we attempted to repair it but it appears to failing and needs replacing.
John and Liz working on a UPS, and Lou working on covers for the RASS
Frost and rime ice build up on the surface met tower and sensors