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Publications

Asher, E., Hornbrook, R. S., Stephens, B. B., Kinnison, D., Morgan, E. J., Keeling, R. F., Atlas, E. L., Schauffler, S. M., Tilmes, S., Kort, E. A., Hoecker-Martínez, M. S., Long, M. C., Lamarque, J.-F., Saiz-Lopez, A., McKain, K., Sweeney, C., Hills, A. J., and Apel, E. C.: Novel approaches to improve estimates of short-lived halocarbon emissions during summer from the Southern Ocean using airborne observations, Atmos. Chem. Phys., https://doi.org/10.5194/acp-19-14071-2019, 2019.
Publications
Birner, B., M. P. Chipperfield, E. J. Morgan, B. B. Stephens, M. Linz, W. Feng, C. Wilson, J. D. Bent, S. C. Wofsy, J. Severinghaus, and R. F. Keeling, 2020: Gravitational separation of Ar/N2 and age of air in the lowermost stratosphere in airborne observations and a chemical transport model. Atmos. Chem. Phys., doi: 10.5194/acp-2020-95.
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Chevallier, F., M. Remaud, C. W. O'Dell, D. Baker, P. Peylin, and A. Cozic, 2019: Objective evaluation of surface- and satellite-driven carbon dioxide atmospheric inversions. Atmos. Chem. Phys., 19, 14233–14251, doi: 10.5194/acp-19-14233-2019.
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Crowell, S., Baker, D., Schuh, A., Basu, S., Jacobson, A. R.,Chevallier, F., Liu, J., Deng, F., Feng, L., Chatterjee, A., Crisp, D., Eldering, A., Jones, D. B., McKain, K., Miller, J., Nassar, R., Oda, T.,O'Dell, C., Palmer, P. I., Schimel, D., Stephens, B., and Sweeney, C., 2019: The2015–2016 Carbon Cycle As Seen from OCO-2 and the Global In Situ Network,Atmos. Chem. Phys., doi: 10.5194/acp-19-9797-2019.
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D'Alessandro, J.J., M. Diao, C. Wu, X. Liu, J.B. Jensen, and B.B. Stephens, 2019: Cloud Phase and Relative Humidity Distributions over the Southern Ocean in Austral Summer Based on In Situ Observations and CAM5 Simulations. J. Climate, 32, 2781–2805, doi: 10.1175/JCLI-D-18-0232.1.
Publications
Erickson, Z. K., C. Frankenberg, D. R. Thompson, A. F. Thompson, and M. Gierach, 2019: Remote Sensing of Chlorophyll Fluorescence in the Ocean Using Imaging Spectrometry: Toward a Vertical Profile of Fluorescence. Geophys. Res. Lett., 46, 1571-1579, doi: 10.1029/2018GL081273.
Publications
Fisher, J. A., E. L. Atlas, B. Barletta, S. Meinardi, D. R. Blake, C. R. Thompson, T. B. Ryerson, J. Peischl, Z. A. Tzompa‐Sosa, and L. T. Murray, 2018: Methyl, Ethyl, and Propyl Nitrates: Global Distribution and Impacts on Reactive Nitrogen in Remote Marine Environments. J. Geophys. Res. Atmos., 123, 12, 429-12, 451, doi: 10.1029/2018JD029046.
Publications
Friedlingstein, P., M. O'Sullivan, M. W. Jones, R. M. Andrew, L. Gregor, J. Hauck, C. Le Quéré, I. T. Luijkx, A. Olsen, G. P. Peters, W. Peters, J. Pongratz, C. Schwingshackl, S. Sitch, J. G. Canadell, P. Ciais, R. B. Jackson, S. R. Alin, R. Alkama, A. Arneth, V. K. Arora, N. R. Bates, M. Becker, N. Bellouin, H. C. Bittig, L. Bopp, F. Chevallier, L. P. Chini, M. Cronin, W. Evans, S. Falk, R. A. Feely, T. Gasser, M. Gehlen, T. Gkritzalis, L. Gloege, G. Grassi, N. Gruber, Ö. Gürses, I. Harris, M. Hefner, R. A. Houghton, G. C. Hurtt, Y. Iida, T. Ilyina, A. K. Jain, A. Jersild, K. Kadono, E. Kato, D. Kennedy, K. K. Goldewijk, J. Knauer, J. I. Korsbakken, P. Landschützer, N. Lefèvre, K. Lindsay, J. Liu, Z. Liu, G. Marland, N. Mayot, M. J. McGrath, N. Metzl, N. M. Monacci, D. R. Munro, S.-I. Nakaoka, Y. Niwa, K. O'Brien, T. Ono, P. I. Palmer, N. Pan, D. Pierrot, K. Pocock, B. Poulter, L. Resplandy, E. Robertson, C. Rödenbeck, C. Rodriguez, T. M. Rosan, J. Schwinger, R. Séférian, J. D. Shutler, I. Skjelvan, T. Steinhoff, Q. Sun, A. J. Sutton, C. Sweeney, S. Takao, T. Tanhua, P. P. Tans, X. Tian, H. Tian, B. Tilbrook, H. Tsujino, F. Tubiello, G. R. van der Werf, A. P. Walker, R. Wanninkhof, C. Whitehead, A. W. Wranne, R. Wright, W. Yuan, C. Yue, X. Yue, S. Zaehle, J. Zeng, and B. Zheng, 2022: Global Carbon Budget 2022. Earth Syst. Sci. Data, 14, 4811–4900, doi: 10.5194/essd-14-4811-2022.
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Friedlingstein, P., O'Sullivan, M., Jones, M. W., Andrew, R. M., Bakker, D. C. E., Hauck, J., Landschützer, P., Le Quéré, C., Luijkx, I. T., Peters, G. P., Peters, W., Pongratz, J., Schwingshackl, C., Sitch, S., Canadell, J. G., Ciais, P., Jackson, R. B., Alin, S. R., Anthoni, P., Barbero, L., Bates, N. R., Becker, M., Bellouin, N., Decharme, B., Bopp, L., Brasika, I. B. M., Cadule, P., Chamberlain, M. A., Chandra, N., Chau, T.-T.-T., Chevallier, F., Chini, L. P., Cronin, M., Dou, X., Enyo, K., Evans, W., Falk, S., Feely, R. A., Feng, L., Ford, D. J., Gasser, T., Ghattas, J., Gkritzalis, T., Grassi, G., Gregor, L., Gruber, N., Gürses, Ö., Harris, I., Hefner, M., Heinke, J., Houghton, R. A., Hurtt, G. C., Iida, Y., Ilyina, T., Jacobson, A. R., Jain, A., Jarníková, T., Jersild, A., Jiang, F., Jin, Z., Joos, F., Kato, E., Keeling, R. F., Kennedy, D., Klein Goldewijk, K., Knauer, J., Korsbakken, J. I., Körtzinger, A., Lan, X., Lefèvre, N., Li, H., Liu, J., Liu, Z., Ma, L., Marland, G., Mayot, N., McGuire, P. C., McKinley, G. A., Meyer, G., Morgan, E. J., Munro, D. R., Nakaoka, S.-I., Niwa, Y., O'Brien, K. M., Olsen, A., Omar, A. M., Ono, T., Paulsen, M., Pierrot, D., Pocock, K., Poulter, B., Powis, C. M., Rehder, G., Resplandy, L., Robertson, E., Rödenbeck, C., Rosan, T. M., Schwinger, J., Séférian, R., Smallman, T. L., Smith, S. M., Sospedra-Alfonso, R., Sun, Q., Sutton, A. J., Sweeney, C., Takao, S., Tans, P. P., Tian, H., Tilbrook, B., Tsujino, H., Tubiello, F., van der Werf, G. R., van Ooijen, E., Wanninkhof, R., Watanabe, M., Wimart-Rousseau, C., Yang, D., Yang, X., Yuan, W., Yue, X., Zaehle, S., Zeng, J., and Zheng, B.: Global Carbon Budget 2023, Earth Syst. Sci. Data, 15, 5301–5369, https://doi.org/10.5194/essd-15-5301-2023, 2023.
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Jin, Y., R. F. Keeling, B. B. Stephens, M. C. Long, P. K. Patra, C. Rödenbeck, E. J. Morgan, E. A. Kort, and C. Sweeney, 2024: Improved atmospheric constraints on Southern Ocean CO2 exchange. PNAS, doi: 10.1073/pnas.230933312.
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Krysztofiak G, Catoire V, Dudok de Wit T, Kinnison DE, Ravishankara AR, Brocchi V, Atlas E, Bozem H, Commane R, D’Amato F, Daube B, Diskin GS, Engel A, Friedl-Vallon F, Hintsa E, Hurst DF, Hoor P, Jegou F, Jucks KW, Kleinböhl A, Küllmann H, Kort EA, McKain K, Moore FL, Obersteiner F, Ramos YG, Schuck T, Toon GC, Viciani S, Wetzel G, Williams J, Wofsy SC. N2O Temporal Variability from the Middle Troposphere to the Middle Stratosphere Based on Airborne and Balloon-Borne Observations during the Period 1987–2018. Atmosphere. 2023; 14(3):585. https://doi.org/10.3390/atmos14030585
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Laughner, J. L., Roche, S., Kiel, M., Toon, G. C., Wunch, D., Baier, B. C., Biraud, S., Chen, H., Kivi, R., Laemmel, T., McKain, K., Quéhé, P.-Y., Rousogenous, C., Stephens, B. B., Walker, K., and Wennberg, P. O.: A new algorithm to generate a priori trace gas profiles for the GGG2020 retrieval algorithm, Atmos. Meas. Tech., 16, 1121–1146, https://doi.org/10.5194/amt-16-1121-2023, 2023.
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Le Quéré, C., Andrew, R. M., Friedlingstein, P., Sitch, S., Hauck, J., Pongratz, J., Pickers, P. A., Korsbakken, J. I., Peters, G. P., Canadell, J.G., Arneth, A., Arora, V. K., Barbero, L., Bastos, A., Bopp, L., Chevallier,F., Chini, L. P., Ciais, P., Doney, S. C., Gkritzalis, T., Goll, D. S.,Harris, I., Haverd, V., Hoffman, F. M., Hoppema, M., Houghton, R. A., Hurtt,G., Ilyina, T., Jain, A. K., Johannessen, T., Jones, C. D., Kato, E.,Keeling, R. F., Goldewijk, K. K., Landschützer, P., Lefèvre, N., Lienert,S., Liu, Z., Lombardozzi, D., Metzl, N., Munro, D. R., Nabel, J. E. M. S.,Nakaoka, S.-I., Neill, C., Olsen, A., Ono, T., Patra, P., Peregon, A.,Peters, W., Peylin, P., Pfeil, B., Pierrot, D., Poulter, B., Rehder, G.,Resplandy, L., Robertson, E., Rocher, M., Rödenbeck, C., Schuster, U.,Schwinger, J., Séférian, R., Skjelvan, I., Steinhoff, T., Sutton, A., Tans,P. P., Tian, H., Tilbrook, B., Tubiello, F. N., van der Laan-Luijkx, I. T.,van der Werf, G. R., Viovy, N., Walker, A. P., Wiltshire, A. J., Wright, R.,Zaehle, S., and Zheng, B., 2018: Global Carbon Budget 2018. Earth Syst. Sci. Data,10, 2141-2194, doi: 10.5194/essd-10-2141-2018.
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Liu, J., L. Baskaran, K. Bowman, D. Schimel, A. A. Bloom, N. C. Parazoo, T. Oda, D. Carroll, D. Menemenlis, J. Joiner, R. Commane, B. Daube, L. V. Gatii, K. McKain, J. Miller, B. B. Stephens, C. Sweeney, and S. Wofsy, 2021: Carbon Monitoring System Flux Net Biosphere Exchange 2020 (CMS-Flux NBE 2020). Earth Syst. Sci. Data, 13, 299–330, doi: 10.5194/essd-13-299-2021.
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Long, M. C., B. B. Stephens, K. McKain, C. Sweeney, R. F. Keeling, E. A. Kort, E. J. Morgan, J, D, Bent, N. Chandra, F. Chevallier, R. Commane, B. C. Daube, P. B. Krummel, Z. Loh, I. T. Luijkx, D. Munro, P. Patra, W. Peters, M. Ramonet, C. R. Stavert, P. Tans, and S. C. Wofsy, 2021, "Strong Southern Ocean carbon uptake evident in airborne observations
https://www.science.org/doi/10.1126/science.abi4355," Science, 2 Dec 2021, DOI: 10.1126/science.abi4355.
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Maciel, F. V., M. Diao, and R. Patnaude, 2023: Examination of aerosol indirect effects during cirrus cloud evolution. Atmospheric Chemistry and Physics, 23(2),1103-1129, doi: 10.5194/acp-23-1103-2023.
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McCoy, I. L., D. T. McCoy, R. Wood, L. Regayre, D. Watson-Parris, D. P. Grosvenor, J. P. Mulcahy, Y. Hu, F. A.-M. Bender, P. R. Field, K. S. Carslaw, and H. Gordon, 2020: The hemispheric contrast in cloud microphysical properties constrains aerosol forcing. Earth, Atmospheric, and Planetary Sciences, 117(32), 18998-19006, doi: 10.1073/pnas.1922502117.
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Morgan, E. J., Stephens, B. B., Long, M. C., Keeling, R. F., Bent, J. D., McKain, K., et al (2019). Summertime Atmospheric Boundary Layer Gradients of O2 and CO2 over the Southern Ocean. Journal of Geophysical Research: Atmospheres, 124. https://doi.org/10.1029/2019JD031479
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Pan, B. J., M. M. Gierach, M. P. Meredith, R. A. Reynolds, O. Schofield, and A. J. Orona, 2023: Remote sensing of sea surface glacial meltwater on the Antarctic Peninsula shelf. Front. Mar. Sci., Volume 10, doi: 10.3389/fmars.2023.1209159.
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Patnaude, R., and M. Diao, 2020: Aerosol indirect effects on cirrus clouds based on global aircraft observations. Geophysical Research Letters, 47, e2019GL086550, doi: 10.1029/2019GL086550.
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Patnaude, R., Diao, M., Liu, X., and Chu, S., 2021: Effects of thermodynamics, dynamics and aerosols on cirrus clouds based on in situ observations and NCAR CAM6, Atmos. Chem. Phys., 21, 1835–1859, doi: 10.5194/acp-21-1835-2021.

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Roozitalab, B., L. K. Emmons, R. S. Hornbrook, D. E. Kinnison, R. P. Fernandez, Q. Li, A. Saiz-Lopez, R. Hossaini, C. A. Cuevas, A. J. Hills, S. A. Montzka, D. R. Blake, W. H. Brune, P. R. Veres, and E. C. Apel, 2024: Measurements and Modeling of the Interhemispheric Differences of Atmospheric Chlorinated Very Short-Lived Substances. Journal of Geophysical Research: Atmospheres, , 129, e2023JD039518, doi: 10.1029/2023JD039518.
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Stephens, B. B., E. J. Morgan, J. D. Bent, R. F. Keeling, A. S. Watt, S. R. Shertz, and B. C. Daube, 2021: Airborne measurements of oxygen concentration from the surface to the lower stratosphere and pole to pole. Atmos. Meas. Tech.,14, 2543–2574, doi: 10.5194/amt-14-2543-202.
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Stephens, B., M. Long, R. Keeling, E. Kort, C. Sweeney, E. Apel, E. Atlas, S. Beaton, J. Bent, N. Blake, J. Bresch, J. Casey, B. Daube, M. Diao, E. Diaz, H. Dierssen, V. Donets, B. Gao, M. Gierach, R. Green, J. Haag, M. Hayman, A. Hills, M. Hoecker-Martínez, S. Honomichl, R. Hornbrook, J. Jensen, R. Li, I. McCubbin, K. McKain, E. Morgan, S. Nolte, J. Powers, B. Rainwater, K. Randolph, M. Reeves, S. Schauffler, M. Smith, K. Smith, J. Stith, G. Stossmeister, D. Toohey, and A. Watt, 2018: The O2/N2 Ratio and CO2 Airborne Southern Ocean (ORCAS) Study. Bull. Amer. Meteor. Soc. doi:10.1175/BAMS-D-16-0206.1.
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Conference Proceedings

Abhishek Chatterjee, "OCO-2 v8 versus v7: Improvement in high-latitude retrievals", OCO-2 Science Team Meeting, NCAR, Boulder, CO, U.S.A., October 25-27, 2017. Oral Presentation.
Conference Proceedings
Britton Stephens, “Oceanography among the clouds and terrestrial ecology a thousand miles from land: The power of global-scale airborne observations”. NCAR EOL Seminar Series, Boulder, CO, February, 2018, Oral presentation.
Conference Proceedings
Britton Stephens, “Southern Ocean air-sea CO2 exchange inferred from airborne, shipboard, and surface station measurements of atmospheric O2 and CO2”. NOAA ESRL Global Monitoring Division Seminar, Boulder, CO, September, 2017, Oral presentation.
Conference Proceedings
Christian Frankenberg, "High-resolution aircraft measurements of fluorescence and chlorophyll in the Southern Ocean", Ocean Sciences Meeting, Portland, OR, February, 2018. Oral Presentation.
Conference Proceedings
Elizabeth Asher, “Assessing the role of 'bottom-up' emissions and simplified chemical mechanisms in reconciling CESM2.0 with TOGA observations from the ORCAS and ATom-2 campaigns", Fall AGU, New Orleans, LA, December, 2017, Poster presentation.
Conference Proceedings
Eric Apel, “The importance of the southern ocean on distributions and lifetimes of non-methane organic compounds", Fall AGU, New Orleans, LA, December, 2017, Oral presentation.
Conference Proceedings
Jorgen B Jensen,"AutoGNI, the Robot Under the Aircraft Floor: An Automated System for Sampling Giant Aerosol Particles by Impaction in the Free Airstream Outside a Research Aircraft", Fall AGU, New Orleans, LA, December, 2017, Oral presentation.
Conference Proceedings
Kathryn McKain, "Constraints on Southern Ocean CO2 Fluxes and Seasonality from Atmospheric Vertical Gradients Observed on Multiple Airborne Campaigns", AMS Annual Meeting, Austin, TX, January, 2018. Oral presentation.
Conference Proceedings
Matthew C Long, "Atmospheric Constraints on Southern Ocean Air-Sea CO2 Fluxes: Results from the ORCAS Campaign", Ocean Sciences Meeting, Portland, OR, February, 2018. Oral Presentation.
Conference Proceedings
Minghui Diao, “Relationship between macroscopic and microphysical properties for mixed-phase and ice clouds over the Southern Ocean in ORCAS campaign", Fall AGU, New Orleans, LA, December, 2017, Oral presentation.
Conference Proceedings

Theses