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Description
This dataset provides information on greenhouse gases and human-produced air pollution, including atmospheric concentrations of carbon dioxide (CO2), methane (CH4), tropospheric ozone (O3), and black carbon (BC) aerosols, collected during airborne campaigns conducted by NASA's Atmospheric Tomography (ATom) mission. This dataset includes merged data from all instruments plus additional data such as numbered profiles and distance flown. Merged data products have been created for seven different aggregation intervals (1 second, 10 seconds, and 5 instrument-specific intervals). In the case of data obtained over longer time intervals (e.g., flask data), the merge files provide (weighted) averages to match the sampling intervals. This comprehensive dataset will be used to improve the representation of chemically reactive gases and short-lived climate forcers in global models of atmospheric chemistry and climate.
Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.
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Wofsy, S. C., Afshar, S., Allen, H. M., Apel, E. C., Asher, E. C., Barletta, B., Bent, J., Bian, H., Biggs, B. C., Blake, D. R., Blake, N., Bourgeois, I., Brock, C. A., Brune, W. H., Budney, J. W., Bui, T. P., Butler, A., Campuzano-Jost, P., Chang, C. S., … Vieznor, N. (2021). ATom: Merged Atmospheric Chemistry, Trace Gases, and Aerosols, Version 2 (Version 2.0). ORNL Distributed Active Archive Center. https://doi.org/10.3334/ORNLDAAC/1925 Date Accessed: 2026-05-28
Wofsy, S.C., S. Afshar, H.M. Allen, E.C. Apel, E.C. Asher, B. Barletta, J. Bent, et al. “ATom: Merged Atmospheric Chemistry, Trace Gases, and Aerosols, Version 2.” ORNL Distributed Active Archive Center, January 1, 2021. doi:10.3334/ORNLDAAC/1925. Date Accessed: 2026-05-28
Wofsy, S. C., et al. ATom: Merged Atmospheric Chemistry, Trace Gases, and Aerosols, Version 2. 2.0, ORNL Distributed Active Archive Center, 1 Jan. 2021, doi:10.3334/ORNLDAAC/1925. Date Accessed: 2026-05-28
Katich, J. M., Apel, E. C., Bourgeois, I., Brock, C. A., Bui, T. P., Campuzano-Jost, P., Commane, R., Daube, B., Dollner, M., Fromm, M., Froyd, K. D., Hills, A. J., Hornbrook, R. S., Jimenez, J. L., Kupc, A., Lamb, K. D., McKain, K., Moore, F., Murphy, D. M., Nault, B. A., Peischl, J., Perring, A. E., Peterson, D. A., Ray, E. A., Rosenlof, K. H., Ryerson, T., Schill, G. P., Schroder, J. C., Weinzierl, B., Thompson, C., Williamson, C. J., Wofsy, S. C., Yu, P., Schwarz, J. P.
Aerosol Particle Properties, Chemical Composition, Air Quality, Black Carbon, Biomass Burning, Halocarbons And Halogens, Trace Gases/Trace Species, Sulfur Compounds, Atmospheric Carbon Monoxide, Atmospheric Ozone, Non-methane Hydrocarbons/Volatile Organic Compounds, Fossil Fuel Burning, Industrial Emissions, Atmospheric Carbon Dioxide, Carbonaceous Aerosols
Folberth, G. A., Staniaszek, Z., Archibald, A. T., Gedney, N., Griffiths, P. T., Jones, C. D., OConnor, F. M., Parker, R. J., Sellar, A. A., Wiltshire, A.
Froyd, Karl D., Yu, Pengfei, Schill, Gregory P., Brock, Charles A., Kupc, Agnieszka, Williamson, Christina J., Jensen, Eric J., Ray, Eric, Rosenlof, Karen H., Bian, Huisheng, Darmenov, Anton S., Colarco, Peter R., Diskin, Glenn S., Bui, ThaoPaul, Murphy, Daniel M.
Andersen, Simone T., Nelson, Beth S., Read, Katie A., Punjabi, Shalini, Neves, Luis, Rowlinson, Matthew J., Hopkins, James, Sherwen, Tomas, Whalley, Lisa K., Lee, James D., Carpenter, Lucy J.
Thompson, Chelsea R., Wofsy, Steven C., Prather, Michael J., Newman, Paul A., Hanisco, Thomas F., Ryerson, Thomas B., Fahey, David W., Apel, Eric C., Brock, Charles A., Brune, William H., Froyd, Karl, Katich, Joseph M., Nicely, Julie M., Peischl, Jeff, Ray, Eric, Veres, Patrick R., Wang, Siyuan, Allen, Hannah M., Asher, Elizabeth, Bian, Huisheng, Blake, Donald, Bourgeois, Ilann, Budney, John, Bui, T. Paul, Butler, Amy, Campuzano-Jost, Pedro, Chang, Cecilia, Chin, Mian, Commane, Roisin, Correa, Gus, Crounse, John D., Daube, Bruce, Dibb, Jack E., DiGangi, Joshua P., Diskin, Glenn S., Dollner, Maximilian, Elkins, James W., Fiore, Arlene M., Flynn, Clare M., Guo, Hao, Hall, Samuel R., Hannun, Reem A., Hills, Alan, Hintsa, Eric J., Hodzic, Alma, Hornbrook, Rebecca S., Huey, L. Greg, Jimenez, Jose L., Keeling, Ralph F., Kim, Michelle J., Kupc, Agnieszka, Lacey, Forrest, Lait, Leslie R., Lamarque, Jean-Francois, Liu, Junhua, McKain, Kathryn, Meinardi, Simone, Miller, David O., Montzka, Stephen A., Moore, Fred L., Morgan, Eric J., Murphy, Daniel M., Murray, Lee T., Nault, Benjamin A., Neuman, J. Andrew, Nguyen, Louis, Gonzalez, Yenny, Rollins, Andrew, Rosenlof, Karen, Sargent, Maryann, Schill, Gregory, Schwarz, Joshua P., Clair, Jason M. St., Steenrod, Stephen D., Stephens, Britton B., Strahan, Susan E., Strode, Sarah A., Sweeney, Colm, Thames, Alexander B., Ullmann, Kirk, Wagner, Nicholas, Weber, Rodney, Weinzierl, Bernadett, Wennberg, Paul O., Williamson, Christina J., Wolfe, Glenn M., Zeng, Linghan
Long, Matthew C., Stephens, Britton B., McKain, Kathryn, Sweeney, Colm, Keeling, Ralph F., Kort, Eric A., Morgan, Eric J., Bent, Jonathan D., Chandra, Naveen, Chevallier, Frederic, Commane, Roisin, Daube, Bruce C., Krummel, Paul B., Loh, Zoe, Luijkx, Ingrid T., Munro, David, Patra, Prabir, Peters, Wouter, Ramonet, Michel, Rodenbeck, Christian, Stavert, Ann, Tans, Pieter, Wofsy, Steven C.
Novak, Gordon A., Fite, Charles H., Holmes, Christopher D., Veres, Patrick R., Neuman, J. Andrew, Faloona, Ian, Thornton, Joel A., Wolfe, Glenn M., Vermeuel, Michael P., Jernigan, Christopher M., Peischl, Jeff, Ryerson, Thomas B., Thompson, Chelsea R., Bourgeois, Ilann, Warneke, Carsten, Gkatzelis, Georgios I., Coggon, Mathew M., Sekimoto, Kanako, Bui, T. Paul, Dean-Day, Jonathan, Diskin, Glenn S., DiGangi, Joshua P., Nowak, John B., Moore, Richard H., Wiggins, Elizabeth B., Winstead, Edward L., Robinson, Claire, Thornhill, K. Lee, Sanchez, Kevin J., Hall, Samuel R., Ullmann, Kirk, Dollner, Maximilian, Weinzierl, Bernadett, Blake, Donald R., Bertram, Timothy H.