Dataset associated with "Evaluation of ambient ammonia measurements from a research aircraft using a closed-path QC-TILDAS spectrometer operated with active continuous passivation"

Airborne measurements were collected aboard the NSF/NCAR C-130 research aircraft during the Western wildfire Experiment for Cloud chemistry, Aerosol absorption and Nitrogen (WE-CAN) field campaign in summer 2018 and during 16 test-flight hours prior to the WE-CAN deployment. The aircraft conducted seventeen research flights of roughly 6-8 hour duration between 20 July and 31 August in 2018, three test flights of 2-3 hour duration between 21 September and 29 September in 2017, and two test flights on 13 July and 17 July in 2018. Research flights were conducted in the northwestern U.S. with aircraft operations based out of Boise, Idaho; test flights were conducted in the northeastern Colorado Front Range based out of the National Center for Atmospheric Research (NCAR) Research Aviation Facility in Broomfield, Colorado. This repository contains data files associated with ground-based experiments and test/research flights aboard the C-130 aircraft utilized in this analysis. Data files are in ICARTT format (https://www-air.larc.nasa.gov/missions/etc/IcarttDataFormat.htm). File names are formatted as WECAN-NH3_Location_YYYYMMDD_R#, where "location" refers to 1) on the C-130 during a flight day, 2) on the C-130 during a ground day in the hangar at NCAR/RAF, or 3) on the ground in the lab at CSU, "YYYYMMDD" represents the date of collection and R# denotes final data for revision #. Ground-based and test flight data for NH3 include flags for time periods where the instrument was performing a calibration and/or zero. Data is reported at 1 Hz or 10 Hz depending on the experiment performed on that date.