HI-SCALE (Holistic Interactions of Shallow Clouds, Aerosols, and Land-Ecosystems) was a multi-institutional measurement campaign led by the Department of Energy’s ARM Climate Research Facility. It consisted of two 4-week periods in April/May and August/September 2016, with a total of 38 flights by the ARM/Pacific Northwest National Laboratory G-1 aircraft over the Oklahoma (based out of Bartlesville, OK). The airborne measurements were complemented by ground-based measurements at the Southern Great Plains measurement station. The campaign’s primary goal was to quantify the relations of emissions, aerosol and trace gas chemistry to cloud condensation nuclei and clouds. The Thornton group contributed a chemical ionization high-resolution time-of-flight mass spectrometer (CI-HR-TOFMS) that we deployed on the G-1 in a dual operation mode. Using this instrument, we measured a wide range of oxidation products of volatile organic compounds important to atmospheric chemistry and aerosol formation in one mode as well as primary emissions (such as isoprene) in the other mode.

For more information on the HI-SCALE campaign, see the ARM facility’s website and blogs written from the campaign.

Our participation in HI-SCALE also relates to the OXFLUX project, through which funding was contributed by the European Commission.