edu.ucar.opensky::articles:18700 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T02:44:24.793805 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7b56md2 https://doi.org/10.5065/D6CJ8BM3 https Related Dataset #1 Location information and pictures of the OASIS Barrow field intensive Spring 2009, Version 1.0 https://doi.org/10.7289/V57P8WBF https Related Dataset #2 Earth System Research Laboratory Ozone Water Vapor Group Surface Ozone Measurements Arctic springtime observations of volatile organic compounds during the OASIS-2009 campaign 2016-08-27T00:00:00Z publication https://n2t.org/ark:/85065/d7b56md2 https://doi.org/10.1002/2015JD024360 Hornbrook, Rebecca author Hills, Alan J. author Riemer, D. author Abdelhamid, A. author Flocke, Frank M. author Hall, Samuel R. author Huey, L. author Knapp, David author Liao, J. author Mauldin, Roy author Montzka, Denise D. author Orlando, John J. author Shepson, P. author Sive, B. author Staebler, R. author Tanner, D. author Thompson, C. author Turnipseed, Andrew A. author Ullmann, Kirk author Weinheimer, Andrew author Apel, Eric C. author UCAR/NCAR - Library publisher Gas-phase volatile organic compounds (VOCs) were measured at three vertical levels between 0.6 m and 5.4 m in the Arctic boundary layer in Barrow, Alaska, for the Ocean-Atmosphere-Sea Ice-Snowpack (OASIS)-2009 field campaign during March-April 2009. C4-C8 nonmethane hydrocarbons (NMHCs) and oxygenated VOCs (OVOCs), including alcohols, aldehydes, and ketones, were quantified multiple times per hour, day and night, during the campaign using in situ fast gas chromatography-mass spectrometry. Three canister samples were also collected daily and subsequently analyzed for C2-C5 NMHCs. The NMHCs and aldehydes demonstrated an overall decrease in mixing ratios during the experiment, whereas acetone and 2-butanone showed increases. Calculations of time-integrated concentrations of Br atoms, ∫[Br]dt, yielded values as high as (1.34 ± 0.27) × 1014 cm-3 s during the longest observed ozone depletion event (ODE) of the campaign and were correlated with the steady state Br calculated at the site during this time. Both chlorine and bromine chemistry contributed to the large perturbations on the production and losses of VOCs. Notably, acetaldehyde, propanal, and butanal mixing ratios dropped below the detection limit of the instrument (3 parts per trillion by volume (pptv) for acetaldehyde and propanal, 2 pptv for butanal) during several ODEs due to Br chemistry. Chemical flux calculations of OVOC production and loss are consistent with localized high Cl-atom concentrations either regionally or within a very shallow surface layer, while the deeper Arctic boundary layer provides a continuous source of precursor alkanes to maintain the OVOC mixing ratios. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2016 American Geophysical Union. None eng geoscientificInformation