Cloud rise will be at?

Richard B. spent the night at the Weather Station checking the sky every few hours. In the end, it did not clear up enough to warrant a trip up to AStrO. However, by the time the day shift was awake, it seemed that the weather was clearing overhead.

At the lab, there was a thick cloud bank on the horizon (essentially in all directions) but there was hope that it might be fairly stationary. The cloud movement is fairly slow so you cannot stare out the window and easily determine the direction of movement. In an attempt to follow what was happening, Tobias set up his camera on a tripod at one of the south facing windows and took pictures approximately every 10 minutes from 9 until 11 am. It was disheartening to see the clouds move in as time progressed. An animation of these photos is on the website.

The Sun did "appear" for less than an hour as a faint yellowish glow behind the clouds. But there was not enough light to track or measure with the FTSs. The DOAS, SPS and MAESTRO instruments made zenith sky measurements during the day but the quality of the observations was degraded by the cloud cover. Everyone is hoping for better weather tomorrow.

The daily ozonesonde/radiosonde was launched at 23:15 UTC using a Raven balloon. The balloon reached 7.6 mbar (31.1 km). Tobias had the closest guess with 8.0 mbar as everyone else was too optimistic after the good results yesterday.

The temperature at AStrO (and the Weather Station) was -35 C with enough wind that it was not so pleasant to stand out on the roof.

Best regards,
Kaley.