Publications


Birner, B., Severinghaus, J., Paplawsky, B., & Keeling, R. F. (2022). Increasing atmospheric helium due to fossil fuel exploitation. Nature Geoscience, 15(5), 346-+. https://doi.org/10.1038/s41561-022-00932-3
Rodenbeck, C., DeVries, T., Hauck, J., Le Quere, C., & Keeling, R. F. (2022). Data-based estimates of interannual sea-air CO2 flux variations 1957-2020 and their relation to environmental drivers. Biogeosciences, 19(10), 2627–2652. https://doi.org/10.5194/bg-19-2627-2022
Birner, B., Severinghaus, J., Paplawsky, B., & Keeling, R. F. (2022). Increasing atmospheric helium due to fossil fuel exploitation. Nature Geoscience, 15(5), 346–348. https://doi.org/10.1038/s41561-022-00932-3
Long, M. C., Stephens, B. B., McKain, K., Sweeney, C., Keeling, R. F., Kort, E. A., Morgan, E. J., Bent, J. D., Chandra, N., Chevallier, F., Commane, R., Daube, B. C., Krummel, P. B., Loh, Z., Luijkx, I. T., Munro, D., Patra, P., Peters, W., Ramonet, M., … Wofsy, S. C. (2021). Strong Southern Ocean carbon uptake evident in airborne observations. Science, 374(6572), 1275-+. https://doi.org/10.1126/science.abi4355
Lovenduski, N. S., Chatterjee, A., Swart, N. C., Fyfe, J. C., Keeling, R. F., & Schimel, D. (2021). On the Detection of COVID-Driven Changes in Atmospheric Carbon Dioxide. Geophysical Research Letters, 48(22), 8. https://doi.org/10.1029/2021gl095396
Aoki, N., Ishidoya, S., Tohjima, Y., Morimoto, S., Keeling, R. F., Cox, A., Takebayashi, S., & Murayama, S. (2021). Intercomparison of O2/N2 ratio scales among AIST, NIES,<?xmltex \hack{\break}?> TU, and SIO based on a round-robin exercise using<?xmltex \hack{\break}?> gravimetric standard mixtures. Atmospheric Measurement Techniques, 14(9), 6181–6193. https://doi.org/10.5194/amt-14-6181-2021
Morgan, E. J., Manizza, M., Keeling, R. F., Resplandy, L., Mikaloff-Fletcher, S. E., Nevison, C. D., Jin, Y. M., Bent, J. D., Aumont, O., Doney, S. C., Dunne, J. P., John, J., Lima, I. D., Long, M. C., & Rodgers, K. B. (2021). An Atmospheric Constraint on the Seasonal Air-Sea Exchange of Oxygen and Heat in the Extratropics. Journal of Geophysical Research-Oceans, 126(8), 20. https://doi.org/10.1029/2021jc017510
Yadav, V., Ghosh, S., Mueller, K., Karion, A., Roest, G., Gourdji, S. M., Lopez-Coto, I., Gurney, K. R., Parazoo, N., Verhulst, K. R., Kim, J., Prinzivalli, S., Fain, C., Nehrkorn, T., Mountain, M., Keeling, R. F., Weiss, R. F., Duren, R., Miller, C. E., & Whetstone, J. (2021). The impact of COVID-19 on CO2 emissions in the Los Angeles and Washington DC/Baltimore metropolitan areas. Geophysical Research Letters, 48(11). https://doi.org/10.1029/2021gl092744
Wang, K., Wang, X. H., Piao, S. L., Chevallier, F., Mao, J. F., Shi, X. Y., Huntingford, C., Bastos, A., Ciais, P., Xu, H., Keeling, R. F., Pacala, S. W., & Chen, A. P. (2021). Unusual characteristics of the carbon cycle during the 2015-2016 El Nino. Global Change Biology. https://doi.org/10.1111/gcb.15669
Stephens, B. B., Morgan, E. J., Bent, J. D., Keeling, R. F., Watt, A. S., Shertz, S. R., & Daube, B. C. (2021). Airborne measurements of oxygen concentration from the surface to the lower stratosphere and pole to pole. Atmospheric Measurement Techniques, 14(3), 2543–2574. https://doi.org/10.5194/amt-14-2543-2021
Birner, B., Paplawsky, W., Severinghaus, J., & Keeling, R. F. (2021). A method for resolving changes in atmospheric He / N-2 as an indicator of fossil fuel extraction and stratospheric circulation. Atmospheric Measurement Techniques, 14(3), 2515–2527. https://doi.org/10.5194/amt-14-2515-2021
Keeling, R. F., Powell, F. L., Shaffer, G., Robbins, P. A., & Simonson, T. S. (2021). Impacts of changes in atmospheric O-2 on human physiology. Is there a basis for concern? Frontiers in Physiology, 12. https://doi.org/10.3389/fphys.2021.571137
Jin, Y. M., Keeling, R. F., Morgan, E. J., Ray, E., Parazoo, N. C., & Stephens, B. B. (2021). A mass-weighted isentropic coordinate for mapping chemical tracers and computing atmospheric inventories. Atmospheric Chemistry and Physics, 21(1), 217–238. https://doi.org/10.5194/acp-21-217-2021
Graven, H., Keeling, R. F., & Rogelj, J. (2020). Changes to carbon isotopes in atmospheric CO2 over the industrial era and into the future. Global Biogeochemical Cycles, 34(11). https://doi.org/10.1029/2019gb006170
Walker, A. P., De Kauwe, M. G., Bastos, A., Belmecheri, S., Georgiou, K., Keeling, R. F., McMahon, S. M., Medlyn, B. E., Moore, D. J. P., Norby, R. J., Zaehle, S., Anderson-Teixeira, K. J., Battipaglia, G., Brienen, R. J. W., Cabugao, K. G., Cailleret, M., Campbell, E., Canadell, J. G., Ciais, P., … Zuidema, P. A. (2020). Integrating the evidence for a terrestrial carbon sink caused by increasing atmospheric CO2. New Phytologist. https://doi.org/10.1111/nph.16866
Birner, B., Chipperfield, M. P., Morgan, E. J., Stephens, B. B., Linz, M., Feng, W. H., Wilson, C., Bent, J. D., Wofsy, S. C., Severinghaus, J., & Keeling, R. F. (2020). Gravitational separation of Ar/N-2 and age of air in the lowermost stratosphere in airborne observations and a chemical transport model. Atmospheric Chemistry and Physics, 20(21), 12391–12408. https://doi.org/10.5194/acp-20-12391-2020
Rodenbeck, C., Zaehle, S., Keeling, R., & Heimann, M. (2020). The European carbon cycle response to heat and drought as seen from atmospheric CO(2)data for 1999-2018. Philosophical Transactions of the Royal Society B-Biological Sciences, 375(1810). https://doi.org/10.1098/rstb.2019.0506
Wang, K., Wang, Y. L., Wang, X. H., He, Y., Li, X. Y., Keeling, R. F., Ciais, P., Heimann, M., Peng, S. S., Chevallier, F., Friedlingstein, P., Sitch, S., Buermann, W., Arora, V. K., Haverd, V., Jain, A. K., Kato, E., Lienert, S., Lombardozzi, D., … Piao, S. L. (2020). Causes of slowing-down seasonal CO(2)amplitude at Mauna Loa. Global Change Biology, 26(8), 4462–4477. https://doi.org/10.1111/gcb.15162
Nevison, C. D., Munro, D. R., Lovenduski, N. S., Keeling, R. F., Manizza, M., Morgan, E. J., & Rodenbeck, C. (2020). Southern Annular Mode influence on wintertime ventilation of the Southern Ocean detected in atmospheric O-2 and CO2 measurements. Geophysical Research Letters, 47(4). https://doi.org/10.1029/2019gl085667
Resplandy, L., Keeling, R. F., Eddebbar, Y., Brooks, M., Wang, R., Bopp, L., Long, M. C., Dunne, J. P., Koeve, W., & Oschlies, A. (2019). Quantification of ocean heat uptake from changes in atmospheric O-2 and CO2 composition. Scientific Reports, 9. https://doi.org/10.1038/s41598-019-56490-z
Morgan, E. J., Stephens, B. B., Long, M. C., Keeling, R. F., Bent, J. D., McKain, K., Sweeney, C., Hoecker-Martinez, M. S., & Kort, E. A. (2019). Summertime atmospheric boundary layer gradients of O-2 and CO2 over the Southern Ocean. Journal of Geophysical Research-Atmospheres. https://doi.org/10.1029/2019jd031479
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-Martinez, M. S., Long, M. C., Lamarque, J. F., Saiz-Lopez, A., McKain, K., Sweeney, C., Hills, A. J., & Apel, E. C. (2019). Novel approaches to improve estimates of short-lived halocarbon emissions during summer from the Southern Ocean using airborne observations. Atmospheric Chemistry and Physics, 19(22), 14071–14090. https://doi.org/10.5194/acp-19-14071-2019
Wang, J. A., Sulla-Menashe, D., Woodcock, C. E., Sonnentag, O., Keeling, R. F., & Friedl, M. A. (2019). Extensive land cover change across Arctic-Boreal Northwestern North America from disturbance and climate forcing. Global Change Biology. https://doi.org/10.1111/gcb.14804
Cui, Y. Y., Vijayan, A., Falk, M., Hsu, Y. K., Yin, D. Z., Chen, X. M., Zhao, Z., Avise, J., Chen, Y. J., Verhulst, K., Duren, R., Yadav, V., Miller, C., Weiss, R., Keeling, R., Kim, J., Iraci, L. T., Tanaka, T., Johnson, M. S., … Croes, B. (2019). A multiplatform inversion estimation of statewide and regional methane emissions in California during 2014-2016. Environmental Science & Technology, 53(16), 9636–9645. https://doi.org/10.1021/acs.est.9b01769
Yadav, V., Duren, R., Mueller, K., Verhulst, K. R., Nehrkorn, T., Kim, J., Weiss, R. F., Keeling, R., Sander, S., Fischer, M. L., Newman, S., Falk, M., Kuwayama, T., Hopkins, F., Rafiq, T., Whetstone, J., & Miller, C. (2019). Spatio-temporally resolved methane fluxes from the Los Angeles megacity. Journal of Geophysical Research-Atmospheres, 124(9), 5131–5148. https://doi.org/10.1029/2018jd030062
Eddebbar, Y. A., Rodgers, K. B., Long, M. C., Subramanian, A. C., Xie, S. P., & Keeling, R. F. (2019). El Nino-like physical and biogeochemical ocean response to tropical eruptions. Journal of Climate, 32(9), 2627–2649. https://doi.org/10.1175/jcli-d-18-0458.1
Le Quere, 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., … Zheng, B. (2018). Global Carbon Budget 2018. Earth System Science Data, 10(4), 2141–2194. https://doi.org/10.5194/essd-10-2141-2018
Betts, R. A., Jones, C. D., Knight, J. R., Keeling, R. F., Kennedy, J. J., Wiltshire, A. J., Andrew, R. M., & Aragao, L. (2018). A successful prediction of the record CO2 rise associated with the 2015/2016 El Nino. Philosophical Transactions of the Royal Society B-Biological Sciences, 373(1760). https://doi.org/10.1098/rstb.2017.0301
Rodenbeck, C., Zaehle, S., Keeling, R., & Heimann, M. (2018). History of El Nino impacts on the global carbon cycle 1957-2017: a quantification from atmospheric CO2 data. Philosophical Transactions of the Royal Society B-Biological Sciences, 373(1760). https://doi.org/10.1098/rstb.2017.0303
Resplandy, L., Keeling, R. F., Eddebbar, Y., Brooks, M. K., Wang, R., Bopp, L., Long, M. C., Dunne, J. P., Koeve, W., & Oschlies, A. (2018). Quantification of ocean heat uptake from changes in atmospheric O-2 and CO2 composition. Nature, 563(7729), 105-+. https://doi.org/10.1038/s41586-018-0651-8
Nevison, C., Munro, D., Lovenduski, N., Cassar, N., Keeling, R., Krummel, P., & Tjiputra, J. (2018). Net community production in the Southern Ocean: Insights from comparing atmospheric potential oxygen to satellite ocean color algorithms and ocean models. Geophysical Research Letters, 45(19), 10549–10559. https://doi.org/10.1029/2018gl079575
Wagner, T. J. W., Dell, R. W., Eisenman, I., Keeling, R. F., Padman, L., & Severinghaus, J. P. (2018). Wave inhibition by sea ice enables trans-Atlantic ice rafting of debris during Heinrich events. Earth and Planetary Science Letters, 495, 157–163. https://doi.org/10.1016/j.epsl.2018.05.006
Resplandy, L., Keeling, R. F., Rodenbeck, C., Stephens, B. B., Khatiwala, S., Rodgers, K. B., Long, M. C., Bopp, L., & Tans, P. P. (2018). Revision of global carbon fluxes based on a reassessment of oceanic and riverine carbon transport. Nature Geoscience, 11(7), 504-+. https://doi.org/10.1038/s41561-018-0151-3
Graven, H., Fischer, M. L., Lueker, T., Jeong, S., Guilderson, T. P., Keeling, R. F., Bambha, R., Brophy, K., Callahan, W., Cui, X., Frankenberg, C., Gurney, K. R., LaFranchi, B. W., Lehman, S. J., Michelsen, H., Miller, J. B., Newman, S., Paplawsky, W., Parazoo, N. C., … Walker, S. J. (2018). Assessing fossil fuel CO2 emissions in California using atmospheric observations and models. Environmental Research Letters, 13(6). https://doi.org/10.1088/1748-9326/aabd43
Rodenbeck, C., Zaehle, S., Keeling, R., & Heimann, M. (2018). How does the terrestrial carbon exchange respond to inter-annual climatic variations? A quantification based on atmospheric CO2 data. Biogeosciences, 15(8), 2481–2498. https://doi.org/10.5194/bg-15-2481-2018
Le Quere, C., Andrew, R. M., Friedlingstein, P., Sitch, S., Pongratz, J., Manning, A. C., Korsbakken, J. I., Peters, G. P., Canadell, J. G., Jackson, R. B., Boden, T. A., Tans, P. P., Andrews, O. D., Arora, V. K., Bakker, D. C. E., Barbero, L., Becker, M., Betts, R. A., Bopp, L., … Zhu, D. (2018). Global Carbon Budget 2017. Earth System Science Data, 10(1), 405–448. https://doi.org/10.5194/essd-10-405-2018
Stephens, B. B., Long, M. C., Keeling, R. F., Kort, E. A., Sweeney, C., Apel, E. C., Atlas, E. L., Beaton, S., Bent, J. D., Blake, N. J., Bresch, J. F., Casey, J., Daube, B. C., Diao, M. H., Diaz, E., Dierssen, H., Donets, V., Gao, B. C., Gierach, M., … Watt, A. S. (2018). The O-2/N-2 Ratio and CO2 Airborne Southern Ocean Study. Bulletin of the American Meteorological Society, 99(2), 381–402. https://doi.org/10.1175/bams-d-16-0206.1
Graven, H., Allison, C. E., Etheridge, D. M., Hammer, S., Keeling, R. F., Levin, I., Meijer, H. A. J., Rubino, M., Tans, P. P., Trudinger, C. M., Vaughn, B. H., & White, J. W. C. (2017). Compiled records of carbon isotopes in atmospheric CO2 for historical simulations in CMIP6. Geoscientific Model Development, 10(12), 4405–4417. https://doi.org/10.5194/gmd-10-4405-2017
Keeling, R. F., Graven, H. D., Welp, L. R., Resplandy, L., Bi, J., Piper, S. C., Sun, Y., Bollenbacher, A., & Meijer, H. A. J. (2017). Atmospheric evidence for a global secular increase in carbon isotopic discrimination of land photosynthesis. Proceedings of the National Academy of Sciences of the United States of America, 114(39), 10361–10366. https://doi.org/10.1073/pnas.1619240114
Verhulst, K. R., Karion, A., Kim, J., Salameh, P. K., Keeling, R. F., Newman, S., Miller, J., Sloop, C., Pongetti, T., Rao, P., Wong, C., Hopkins, F. M., Yadav, V., Weiss, R. F., Duren, R. M., & Miller, C. E. (2017). Carbon dioxide and methane measurements from the Los Angeles Megacity Carbon Project - Part 1: calibration, urban enhancements, and uncertainty estimates. Atmospheric Chemistry and Physics, 17(13), 8313–8341. https://doi.org/10.5194/acp-17-8313-2017
Eddebbar, Y. A., Long, M. C., Resplandy, L., Rödenbeck, C., Rodgers, K. B., Manizza, M., & Keeling, R. F. (2017). Impacts of ENSO on air-sea oxygen exchange: Observations and mechanisms. Global Biogeochemical Cycles. https://doi.org/10.1002/2017GB005630
Fischer, M. L., Parazoo, N., Brophy, K., Cui, X. G., Jeong, S., Liu, J. J., Keeling, R., Taylor, T. E., Gurney, K., Oda, T., & Graven, H. (2017). Simulating estimation of California fossil fuel and biosphere carbon dioxide exchanges combining in situ tower and satellite column observations. Journal of Geophysical Research-Atmospheres, 122(6), 3653–3671. https://doi.org/10.1002/2016jd025617
Le Quere, C., Andrew, R. M., Canadell, J. G., Sitch, S., Korsbakken, J. I., Peters, G. P., Manning, A. C., Boden, T. A., Tans, P. P., Houghton, R. A., Keeling, R. F., Alin, S., Andrews, O. D., Anthoni, P., Barbero, L., Bopp, L., Chevallier, F., Chini, L. P., Ciais, P., … Zaehle, S. (2016). Global Carbon Budget 2016. Earth System Science Data, 8(2), 605–649. https://doi.org/10.5194/essd-8-605-2016
Jeong, S. G., Newman, S., Zhang, J. S., Andrews, A. E., Bianco, L., Bagley, J., Cui, X. G., Graven, H., Kim, J., Salameh, P., LaFranchi, B. W., Priest, C., Campos-Pineda, M., Novakovskaia, E., Sloop, C. D., Michelsen, H. A., Bambha, R. P., Weiss, R. F., Keeling, R., & Fischer, M. L. (2016). Estimating methane emissions in California’s urban and rural regions using multitower observations. Journal of Geophysical Research-Atmospheres, 121(21), 13031–13049. https://doi.org/10.1002/2016jd025404
Resplandy, L., Keeling, R. F., Stephens, B. B., Bent, J. D., Jacobson, A., Rodenbeck, C., & Khatiwala, S. (2016). Constraints on oceanic meridional heat transport from combined measurements of oxygen and carbon. Climate Dynamics, 47(9–10), 3335–3357. https://doi.org/10.1007/s00382-016-3029-3
Welp, L. R., Patra, P. K., Rodenbeck, C., Nemani, R., Bi, J., Piper, S. C., & Keeling, R. F. (2016). Increasing summer net CO2 uptake in high northern ecosystems inferred from atmospheric inversions and comparisons to remote-sensing NDVI. Atmospheric Chemistry and Physics, 16(14), 9047–9066. https://doi.org/10.5194/acp-16-9047-2016
Newman, S., Xu, X. M., Gurney, K. R., Hsu, Y. K., Li, K. F., Jiang, X., Keeling, R., Feng, S., O’Keefe, D., Patarasuk, R., Wong, K. W., Rao, P., Fischer, M. L., & Yung, Y. L. (2016). Toward consistency between trends in bottom-up CO2 emissions and top-down atmospheric measurements in the Los Angeles megacity. Atmospheric Chemistry and Physics, 16(6), 3843–3863.
Petrenko, V. V., Severinghaus, J. P., Schaefer, H., Smith, A. M., Kuhl, T., Baggenstos, D., Hua, Q., Brook, E. J., Rose, P., Kulin, R., Bauska, T., Harth, C., Buizert, C., Orsi, A., Emanuele, G., Lee, J. E., Brailsford, G., Keeling, R., & Weiss, R. F. (2016). Measurements of 14C in ancient ice from Taylor Glacier, Antarctica constrain in situ cosmogenic 14CH4 and 14CO production rates. Geochimica Et Cosmochimica Acta, 177, 62–77. https://doi.org/10.1016/j.gca.2016.01.004
Nevison, C. D., Manizza, M., Keeling, R. F., Stephens, B. B., Bent, J. D., Dunne, J., Ilyina, T., Long, M., Resplandy, L., Tjiputra, J., & Yukimoto, S. (2016). Evaluating CMIP5 ocean biogeochemistry and Southern Ocean carbon uptake using atmospheric potential oxygen: Present-day performance and future projection. Geophysical Research Letters, 43(5), 2077–2085. https://doi.org/10.1002/2015gl067584
Forkel, M., Carvalhais, N., Rodenbeck, C., Keeling, R., Heimann, M., Thonicke, K., Zaehle, S., & Reichstein, M. (2016). Enhanced seasonal CO2 exchange caused by amplified plant productivity in northern ecosystems. Science, 351(6274), 696–699. https://doi.org/10.1126/science.aac4971