THE NASA ATMOSPHERIC TOMOGRAPHY (ATom) MISSION: Imaging the Chemistry of the Global Atmosphere

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dc.contributor.authorThompson, Chelsea R.
dc.contributor.authorWofsy, Steven C.
dc.contributor.authorPrather, Michael J.
dc.contributor.authorNewman, Paul A.
dc.contributor.authorBian, Huisheng
dc.contributor.authorHannun, Reem
dc.contributor.authorClair, Jason St.
dc.contributor.authoret al
dc.date.accessioned2022-07-27T13:52:12Z
dc.date.available2022-07-27T13:52:12Z
dc.date.issued2022-03-01
dc.descriptionAuthors: Chelsea R. Thompson, Steven C. Wofsy, Michael J. Prather, Paul A. Newman, Thomas F. Hanisco, Thomas B. Ryerson, David W. Fahey, Eric C. Apel, Charles A. Brock, William H. Brune, Karl Froyd, Joseph M. Katich, Julie M. Nicely, Jeff Peischl, Eric Ray, Patrick R. Veres, Siyuan Wang, Hannah M. Allen, Elizabeth Asher, Huisheng Bian, Donald Blake, Ilann Bourgeois, John Budney, T. Paul Bui, Amy Butler, Pedro Campuzano-Jost, Cecilia Chang, Mian Chin, Róisín Commane, Gus Correa, John D. Crounse, Bruce Daube, Jack E. Dibb, Joshua P. DiGangi, Glenn S. Diskin, Maximilian Dollner, James W. Elkins, Arlene M. Fiore, Clare M. Flynn, Hao Guo, Samuel R. Hall, Reem A. Hannun, Alan Hills, Eric J. Hintsa, Alma Hodzic, Rebecca S. Hornbrook, L. Greg Huey, Jose L. Jimenez, Ralph F. Keeling, Michelle J. Kim, Agnieszka Kupc, Forrest Lacey, Leslie R. Lait, Jean-Francois Lamarque, Junhua Liu, Kathryn McKain, Simone Meinardi, David O. Miller, Stephen A. Montzka, Fred L. Moore, Eric J. Morgan, Daniel M. Murphy, Lee T. Murray, Benjamin A. Nault, J. Andrew Neuman, Louis Nguyen, Yenny Gonzalez, Andrew Rollins, Karen Rosenlof, Maryann Sargent, Gregory Schill, Joshua P. Schwarz, Jason M. St. Clair, Stephen D. Steenrod, Britton B. Stephens, Susan E. Strahan, Sarah A. Strode, Colm Sweeney, Alexander B. Thames, Kirk Ullmann, Nicholas Wagner, Rodney Weber, Bernadett Weinzierl, Paul O. Wennberg, Christina J. Williamson, Glenn M. Wolfe, and Linghan Zengen_US
dc.description.abstractThis 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.en_US
dc.description.sponsorshipThis work is a contribution to the ATom project, an EVS-2 Investigation awarded under NASA Research Announcement (NRA) NNH13ZDA001N-EVS2, Research Opportunities in Space and Earth Science (ROSES-2013) and funded through NASA Agreement NNH15AB12I to NOAA. The National Center for Atmospheric Research is a major facility sponsored by the National Science Foundation under Cooperative Agreement 1852977. The AO2 and Medusa measurements were supported by NSF Awards AGS-1547626, AGS-1547797, AGS-1623745, and AGS-1623748. We acknowledge the many scientists and engineers on the ATom Science Team who contributed their talent, time, and expertise to this mission. We also gratefully acknowledge the NASA and ESPO project managers, site managers, shipping coordinators, mission managers, pilots, aircrew, and ground crew that were essential for the success of this extraordinarily challenging campaign. A full list of the ATom team members can be found in Table ES5 in the online supplemental material. We thank Dennis Dickerson (Respond Grafiks, Broomfield, Colorado) for creating a digital rendering of the NASA DC-8 that was used in Fig. 1 of this article. We thank the many service and hospitality workers in Palmdale, Anchorage, Kona, Pago Pago, Nadi, Christchurch, Punta Arenas, Recife, Ascension Island, Cabo Verde, Lajes, Kangerlussuaq, Thule, Bangor, and Minneapolis who welcomed a large group of tired scientists and crew with warm beds, good food, heroic patience, and flexibility for our changeable schedules.en_US
dc.description.urihttps://journals.ametsoc.org/view/journals/bams/103/3/BAMS-D-20-0315.1.xmlen_US
dc.format.extent30 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2yvmk-rri6
dc.identifier.citationThompson, Chelsea R., et al. "The NASA Atmospheric Tomography (ATom) Mission: Imaging the Chemistry of the Global Atmosphere", Bulletin of the American Meteorological Society 103, 3 (2022): E761-E790, accessed Jul 21, 2022, https://doi.org/10.1175/BAMS-D-20-0315.1en_US
dc.identifier.urihttps://doi.org/10.1175/BAMS-D-20-0315.1
dc.identifier.urihttp://hdl.handle.net/11603/25243
dc.language.isoen_USen_US
dc.publisherAMSen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleTHE NASA ATMOSPHERIC TOMOGRAPHY (ATom) MISSION: Imaging the Chemistry of the Global Atmosphereen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0001-5195-5307en_US
dcterms.creatorhttps://orcid.org/0000-0002-9367-5749en_US

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