2B: WE-CAN Deployment

ACOM heavily supported the Western Wildfire Experiment for Cloud Chemistry, Aerosol Absorption and Nitrogen (WE-CAN), carried out this summer on board the NSF/ NCAR C-130 aircraft, based in Boise, ID. Plumes from 21 wildfires, located throughout the northwestern United States were sampled. The campaign was followed up with a set of three educational flights based out of Broomfield, Colorado over a two-week period in early September 2018, teaching students from several partner Universities how to design an airborne field experiment. During these flights, the C-130 sampled smoke plumes from two more fires, including a prescribed fire in Colorado.

ACOM deployed most of its available airborne chemistry measurements. Ozone, NO and NO2 were measured using the two-channel NOx chemiluminescence analyzer coupled with the HAIS Fast-Ozone instrument. The PAN-CIMS was deployed to measure PAN and PPN. Long lived tracers (CO, CO2, CH4, H2O, and N2O) were measured using our Picarro 2401 and Aerodyne TILDAS instruments. This was the first full field deployment of our new Aerodyne analyzer, and was very successful. VOCs, including many fire tracers were measured by the Trace Organic Gas Analyzer (TOGA), and the HIAPER Airborne Radiation Package (HARP) made actinic flux and irradiance measurements. The involvement of the ACOM measurement suite in the WE-CAN campaign demonstrates the critical role that our instruments play in the support of the university community during aircraft campaigns focused on atmospheric chemistry topics, by providing precise and well calibrated and state-of-the-art backbone measurements needed for airborne photochemistry studies.

C-130 cabin.
Figure 1. Cabin of the C-130 between flights. Click for larger image.