The weather remains fair at both the Eureka Weather Station, whose temperature was -41°C, and the Ridge Lab, whose temperatures was -23°C. There were a few thin clouds near the horizon. The team's arrival at the Ridge Lab is now well-timed with available sunlight.
Immediately upon arrival at the Ridge Lab, Dan went directly to the roof and opened the suntracker hatch, while Joseph and Debora turned on the Bruker and PARIS and prepared for measurements.
In the IR lab, Dan and Joseph took 55 MIR measurements and 50 NIR measurements with the Bruker. Debora took 52 measurements with PARIS. When they were not occupied by the needs of the Bruker, Joseph worked on his line-mixing research, while Dan worked on the campaign website and his course work.
In the UV-Vis Lab, SAOZ, UT-GBS, and PEARL-GBS operated nominally. Xiaoyi kept an eye on the temperature data from the PEARL-GBS, which is operating from inside its cooling insulation box, with two air conditioners. The new temperature monitor confirmed the cooling box is performing well.
Xiaoyi spent the day at the Eureka Weather Station, working on analysis of PEARL-GBS's data; preliminary BrO and NO2 slant column fits for Zenith-sky data are in good shape. He compared the current slit function of the PEARL-GBS to the last two years. This showed that, with the new wedged CCD mount, PEARL-GBS's slit function is more uniform. Xiaoyi is pleased!
Down at 0PAL, Chris took lidar measurements for 24 hours. Emily did some outreach today by Skype calling a booth at Western University's open house. Several prospective undergraduate students asked questions which were answered by Emily over speakerphone, and by Melanie Wright in person at the booth. (Melanie is Prof. Hocking's student at Western University. She has worked on the SAFIRE lab's radar.) People were very interested in what we are accomplishing science-wise during the campaign, and were equally interested in what one can eat for breakfast on an average day in Eureka.
Today's ACE ozonesonde flight occurred at 18:15 (local time) and reached an altitude of 31,245 m (7.3 hPa).