ABoVE: Atmospheric Gas Concentrations from Airborne Flasks, Arctic-CAP, 2017 : Arctic-Boreal Vulnerability Experiment (ABoVE)

• Main Authors: Sweeney, C., McKain, K., Miller, B.R., Michel, S.E.
• Format: Article in Journal/Newspaper
• Language: English
• Published: ORNL Distributed Active Archive Center 2020
• Subjects: ATMOSPHERE, ATMOSPHERIC CHEMISTRY, CARBON AND HYDROCARBON COMPOUNDS, METHANE; ATMOSPHERE, ATMOSPHERIC CHEMISTRY, TRACE GASES/TRACE SPECIES,; ATMOSPHERE, ATMOSPHERIC CHEMISTRY, NITROGEN COMPOUNDS, NITROUS OXIDE; ATMOSPHERE, ATMOSPHERIC CHEMISTRY, CARBON AND HYDROCARBON COMPOUNDS, CARBON MONOXIDE; ATMOSPHERE, ATMOSPHERIC CHEMISTRY, CARBON AND HYDROCARBON COMPOUNDS, CARBON DIOXIDE; ATMOSPHERE, ATMOSPHERIC CHEMISTRY, SULFUR COMPOUNDS,; ATMOSPHERE, ATMOSPHERIC CHEMISTRY, HYDROGEN COMPOUNDS, MOLECULAR HYDROGEN; ATMOSPHERE, ATMOSPHERIC CHEMISTRY, CARBON AND HYDROCARBON COMPOUNDS, CHLORINATED HYDROCARBONS; ATMOSPHERE, ATMOSPHERIC CHEMISTRY, HALOCARBONS AND HALOGENS, METHYL CHLORIDE; ATMOSPHERE, ATMOSPHERIC CHEMISTRY, HALOCARBONS AND HALOGENS, METHYL BROMIDE; LABORATORY, GAS CHROMATOGRAPHS; LABORATORY, FLAME-IONIZATION DETECTOR; LABORATORY, FLUORESCENCE SPECTROSCOPY; AIRCRAFT, FLASKS; greenhouse gases; refrigerants; air pollutants; NOAA Laboratories; INSTAAR Laboratories; sulfur fluorides; vertical profiles; Arctic; Canada; Northwest Territories; Yukon; permafrost; Alaska
• Online Access: https://dx.doi.org/10.3334/ornldaac/1717; https://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1717

This dataset provides atmospheric carbon dioxide (CO2), methane (CH4), carbon monoxide (CO), molecular hydrogen (H2), nitrous oxide (N2O), sulfur hexafluoride (SF6), and other trace gas mole fractions (i.e. "concentrations") from flights over Alaska and the Yukon and Northwest Territories of Canada during the Arctic Carbon Aircraft Profile (Arctic-CAP) monthly sampling campaigns from April-November 2017. The data were derived from laboratory measurements of whole air samples collected by Programmable Flask Packages (PFP) onboard the aircraft. During each of the six monthly campaigns, flights over the Arctic-Boreal Vulnerability Experiment (ABoVE) domain included 25 vertical profiles, from the surface up to 6 km altitude, at locations selected to complement regular long-term vertical profiles, remote sensing data, and ground-based flux tower measurements. Measurements were initiated by the aircraft pilot at predetermined locations within each profile in order to evenly distribute flask sampling points throughout each flight. A total of 408 flask samples were collected during 55 individual flights. The measurements included in this data set are crucial for understanding changes in Arctic carbon cycling and the potential threats posed by thawing of Arctic permafrost.