edu.ucar.opensky::articles:25488 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T22:50:13.097121 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d77h1p95 https://doi.org/10.3334/ORNLDAAC/1581 https Related Dataset #1 ATom: Merged Atmospheric Chemistry, Trace Gases, and Aerosols https://doi.org/10.3334/ORNLDAAC/1925 https Related Dataset #2 ATom: Merged Atmospheric Chemistry, Trace Gases, and Aerosols, Version 2 The NASA Atmospheric Tomography (ATom) Mission: Imaging the chemistry of the global atmosphere 2022-03-01T00:00:00Z publication https://n2t.org/ark:/85065/d77h1p95 https://doi.org/10.1175/BAMS-D-20-0315.1 Thompson, C. R. author Wofsy, S. C. author Prather, M. J. author Newman, P. A. author Hanisco, T. F. author Ryerson, T. B. author Fahey, D. W. author Apel, Eric C. author Brock, C. A. author Brune, W. H. author Froyd, K. author Katich, J. M. author Nicely, J. M. author Peischl, J. author Ray, E. author Veres, P. R. author Wang, Siyuan author Allen, H. M. author Asher, Elizabeth author Bian, H. author Blake, D. author Bourgeois, I. author Budney, J. author Bui, T. P. author Butler, A. author Campuzano-Jost, P. author Chang, C. author Chin, M. author Commane, R. author Correa, G. author Crounse, J. D. author Daube, B. author Dibb, J. E. author DiGangi, J. P. author Diskin, G. S. author Dollner, M. author Elkins, J. W. author Fiore, A. M. author Flynn, C. M. author Guo, H. author Hall, Samuel R. author Hannun, R. A. author Hills, Alan J. author Hintsa, E. J. author Hodzic, Alma author Hornbrook, Rebecca author Huey, L. G. author Jimenez, J. L. author Keeling, R. F. author Kim, M. J. author Kupc, A. author Lacey, Forrest author Lait, L. R. author Lamarque, Jean-François author Liu, J. author McKain, K. author Meinardi, S. author Miller, D. O. author Montzka, S. A. author Moore, F. L. author Morgan, E. J. author Murphy, D. M. author Murray, L. T. author Nault, B. A. author Neuman, J. A. author Nguyen, L. author Gonzalez, Y. author Rollins, A. author Rosenlof, K. author Sargent, M. author Schill, G. author Schwarz, J. P. author Clair, J. M. S. author Steenrod, S. D. author Stephens, Britton author Strahan, S. E. author Strode, S. A. author Sweeney, C. author Thames, A. B. author Ullmann, Kirk author Wagner, N. author Weber, R. author Weinzierl, B. author Wennberg, P. O. author Williamson, C. J. author Wolfe, G. M. author Zeng, L. author UCAR/NCAR - Library publisher This article provides an overview of the NASA Atmospheric Tomography (ATom) mission and a summary of selected scientific findings to date. ATom was an airborne measurements and modeling campaign aimed at characterizing the composition and chemistry of the troposphere over the most remote regions of the Pacific, Southern, Atlantic, and Arctic Oceans, and examining the impact of anthropogenic and natural emissions on a global scale. These remote regions dominate global chemical reactivity and are exceptionally important for global air quality and climate. ATom data provide the in situ measurements needed to understand the range of chemical species and their reactions, and to test satellite remote sensing observations and global models over large regions of the remote atmosphere. Lack of data in these regions, particularly over the oceans, has limited our understanding of how atmospheric composition is changing in response to shifting anthropogenic emissions and physical climate change. ATom was designed as a global-scale tomographic sampling mission with extensive geographic and seasonal coverage, tropospheric vertical profiling, and detailed speciation of reactive compounds and pollution tracers. ATom flew the NASA DC-8 research aircraft over four seasons to collect a comprehensive suite of measurements of gases, aerosols, and radical species from the remote troposphere and lower stratosphere on four global circuits from 2016 to 2018. Flights maintained near-continuous vertical profiling of 0.15–13-km altitudes on long meridional transects of the Pacific and Atlantic Ocean basins. Analysis and modeling of ATom data have led to the significant early findings highlighted here. 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 2022 American Meteorological Society (AMS). None eng geoscientificInformation