A very warm day with light winds and no clouds.
We started off at ISS1 this morning, then moved out to Sedgwick where the ISS3 wind profiler had shutdown yesterday. It appears that the UPS powering it had turned off, but it isn't clear if there were any interruptions to power. No other systems went down although they are all on separate UPS units. The profiler UPS display claims that the draw is nearly 400 W and should run for 50 minutes. The draw on the other UPS is less so they should last longer. However a digital clock not on UPS did not reset implying that the power didn;t go out. It is possible there is a problem with that UPS so if there are further problems we plan to switch the profiler UPS with the ceilometer UPS. After reseting, everything is working well.
The NPS Twin Otter did a series of overpasses over all three of our wind profiler sites as part of a training and calibration exercise this afternoon. The aircraft includes a Doppler lidar and their scientists are interested in comparing their measurements with the profilers. They flew a cross pattern at around 11 thousand feet. We also went up Figueroa mountain about 4 miles northeast of Sedgwick to carry out maintenance on ISFS site number 15.
Liz departed today (many thanks for all your work out here). She will return to Santa Barbara late next week. Jacquie arrived this evening and will be here for 10 days.
Searching for the Twin Otter (indicated by the red arrow), the flightradar track over the three ISS sites, and ISFS 15 on Figueroa mountain