Publications

Please visit Google Scholar or ORCID to access papers.

Graven, H, T Hocking and G Zazzeri, 2018. Detection of Fossil and Biogenic Methane at Regional Scales Using Atmospheric Radiocarbon, Earth's Future, in review.

Lavergne, A, H Graven, M De Kauwe, B Medlyn, T Keenan and IC Prentice, 2018. Historical trends in the water use efficiency of plants, Global Change Biology, in review.

Brophy, K, H Graven, AJ Manning, E White, T Arnold, ML Fischer, S Jeong, X Cui, and M Rigby, 2018. Characterizing Uncertainties in Atmospheric Inversions of Fossil Fuel CO2 Emissions in California, Atmospheric Chemistry and Physics Discussions, doi:10.5194/acp-2018-473.

Graven, H, ML Fischer, T Lueker, S Jeong, TP Guilderson, RF Keeling, R Bambha, K Brophy, W Callahan, X Cui, C Frankenberg, KR Gurney, BW LaFranchi, SJ Lehman, H Michelsen, JB Miller, S Newman, W Paplawsky, NC Parazoo, C Sloop, SJ Walker, 2018. Assessing Fossil Fuel CO2 Emissions in California Using Atmospheric Observations and Models, Environmental Research Letters, 13, 065007, doi:10.1088/1748-9326/aabd43.

Zazzeri, G, E Acuna Yeomans and HD Graven, 2018. Global and regional emissions of radiocarbon from nuclear power plants from 1972 to 2016, Radiocarbon, 60, 1067-1081, doi:10.1017/RDC.2018.42.

Khatiwala, S, H Graven, S Payne, and P Heimbach, 2018. Changes to the Air-Sea Flux and Distribution of Radiocarbon in the Ocean Over the 21st Century, Geophysical Research Letters, 45, 5617-5626, doi:10.1029/2018GL078172.

Graven, H, CE Allison, DM Etheridge, S Hammer, RF Keeling, I Levin, HAJ Meijer, M Rubino, PP Tans, CM Trudinger, BH Vaughn and JWC White, 2017. Compiled records of carbon isotopes in atmospheric CO2 for historical simulations in CMIP6, Geoscientific Model Development, 10, 4405-4417, doi:10.5194/gmd-10-4405-2017.

Keeling, RF, HD Graven, LR Welp, L Resplandy, J Bi, SC Piper, Y Sun, A Bollenbacher, HAJ Meijer, 2017. Atmospheric evidence for a global secular increase in carbon isotopic discrimination of land photosynthesis, Proceedings of the National Academy of Sciences, 114(39), 10361-10366. doi:10.1073/pnas.1619240114.

Orr, JC, RG Najjar, O Aumont, L Bopp, J Bullister, G Danabasoglu, SC Doney, JP Dunne, J-C Dutay, H Graven, SM Griffies, F Joos, I Levin, K Lindsay, GA McKinley, A Oschlies, A Romanou, R Schlitzer, A Tagliabue, T Tanhua and A Yool, 2017. Biogeochemical protocols and diagnostics for the CMIP6 Ocean Model Intercomparison Project (OMIP), Geoscientific Model Development, 10, 2169-2199, doi:10.5194/gmd-10-2169-2017.

Fischer, ML, N Parazoo, K Brophy, X Cui, S Jeong, J Liu, R Keeling, TE Taylor, K Gurney, T Oda, H Graven, 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, doi:10.1002/2016JD025617.

Graven, HD, 2016. The Carbon Cycle in a Changing Climate, Physics Today, 69, 11, 48, doi:10.1063/PT.3.3365.

Jeong, S, S Newman, J Zhang, A Andrews, L Bianco, J Bagley, X Cui, H Graven, J Kim, P Salameh, B LaFranchi, C Priest, M Campos-Pineda, E Novakovskaia, C Sloop, H Michelsen, RP Bambha, R Weiss, RF Keeling, M Fischer, 2016. Estimating methane emissions in California's urban and rural regions using multitower observations, Journal of Geophysical Research Atmospheres, 121, 13,031-13,049, doi:10.1002/2016JD025404.

Jones, CD, V Arora, P Friedlingstein, L Bopp, V Brovkin, J Dunne, HD Graven, F Hoffman, T Ilyina, JG John, M Jung, M Kawamiya, C Koven, J Pongratz, T Raddatz, J Randerson, and S Zaehle, 2016. C4MIP - The Coupled Climate Carbon Cycle Model Intercomparison Project: experimental protocol for CMIP6, Geoscientific Model Development, 9, 2853-2880, doi:10.5194/gmd-9-2853-2016.

Thomas, R, IC Prentice, H Graven, P Ciais, JB Fisher, D Hayes, M Huang, D Huntzinger, A Ito, A Jain, J Mao, A Michalak, S Peng, B Poulter, D Ricciuto, X Shi, C Schwalm, H Tian, N Zeng, 2016. Increased light-use efficiency in northern terrestrial ecosystems indicated by CO2 and greening observations, Geophysical Research Letters, 43(21), 11,339-11,349, doi:10.1002/2016GL070710.

Graven, HD, 2015. Impact of fossil fuel emissions on atmospheric radiocarbon and various applications of radiocarbon over this century, Proceedings of the National Academy of Sciences, 112(31), 9542-9545, doi:10.1073/pnas.1504467112.

Goldberg, SJ, GI Ball, B Allen, GS Schladow, AJ Simpson, H Masoom, R Soong, H Graven, and LI Aluwihare, 2015. Refractory Dissolved Organic Nitrogen Accumulation in Oligotrophic Lake Tahoe Shows Biological Activity Attenuates Nutrient Imbalance, Nature Communications, 6, 6347, doi:10.1038/ncomms7347.

Sitch, S, P Friedlingstein, N Gruber, SD Jones, G Murray-Tortarolo, A Ahlstrom, SC Doney, H Graven, C Heinze, C Huntingford, S Levis, PE Levy, M Lomas, B Poulter, N Viovy, S Zaehle, N Zeng, A Arneth, G Bonan, L Bopp, JG Canadell, F Chevallier, P Ciais, R Ellis, M Gloor, P Peylin, S Piao, C Le Quere, B Smith, Z Zhu, R Myneni, 2015. Trends and drivers of regional sources and sinks of carbon dioxide over the past two decades, Biogeosciences, 12, 653-679, doi:10.5194/bg-12-653-2015.

Lucas, DD, C Yver Kwok, P Cameron-Smith, H Graven, D Bergmann, TP Guilderson, R Weiss, and R Keeling, 2015. Designing optimal greenhouse gas observing networks that consider performance and cost, Geoscientific Instrumentation, Methods and Data Systems, 4, 121-137, doi:10.5194/gi-4-121-2015.

Graven, HD, RF Keeling, SC Piper, PK Patra, BB Stephens, SC Wofsy, LR Welp, C Sweeney, PP Tans, JJ Kelley, BC Daube, EA Kort, GW Santoni, JD Bent, 2013. Enhanced seasonal exchange of CO2 by northern ecosystems since 1960, Science, 341, 1085-1089, doi:10.1126/science.1239207.

Miller, J, C Wolak, S Lehman, C Allison, HD Graven, T Guilderson, R Keeling, B LaFranchi, H Meijer, H Mukai, T Nakamura, T Nakazawa, R Neubert, A Smith, J Southon, Y Terao and X Xu, 2013. Initial Results of an Intercomparison of AMS-Based Atmospheric 14CO2 Measurements. Radiocarbon, 55 (2-3), 1475-1483, doi:10.2458/azu_js_rc.55.16382.

Graven, HD, X Xu, TP Guilderson, RF Keeling, SE Trumbore, and S Tyler, 2013. Comparison of independent Δ14CO2 records at Point Barrow, Alaska. Radiocarbon, 55 (2-3), 1541-1545, doi:10.2458/azu_js_rc.55.16220.

Turnbull, J, HD Graven, J. Miller and the workshop participants, 2013. Atmospheric radiocarbon workshop report. Radiocarbon, 55 (2-3), 1470-1474, doi:10.2458/azu_js_rc.55.16216.

Khatiwala, S, T Tanhua, S. Mikaloff Fletcher, M Gerber, SC Doney, HD Graven, N Gruber, GA McKinley, A Murata, AF Rios, CL Sabine, and JL Sarmiento, 2013. Global ocean storage of anthropogenic carbon. Biogeosciences, 10, 2169-2191, doi:10.5194/bg-10-2169-2013.

Wanninkhof, R, G-H Park, T Takahashi, C Sweeney, R Feely, Y Nojiri, N Gruber, SC Doney, GA McKinley, A Lenton, C Le Quere, C Heinze, J Schwinger, H Graven, and S Khatiwala, 2013. Global ocean carbon uptake: magnitude, variability and trends. Biogeosciences, 10, 1983-2000, doi:10.5194/bg-10-1983-2013.

Yver, C, HD Graven, DD Lucas, P Cameron-Smith, RF Keeling, and RF Weiss, 2013. Evaluating transport in the WRF model along the California coast. Atmospheric Chemistry and Physics, 13, 1837-1852, doi:10.5194/acp-13-1837-2013.

Graven, HD, N Gruber, R Key, S Khatiwala and X Giraud, 2012. Changing controls on oceanic radiocarbon: New insights on shallow-to-deep ocean exchange and anthropogenic CO2 uptake. Journal of Geophysical Research, 117, C10005, doi:10.1029/2012JC008074.

Graven, HD, TP Guilderson and RF Keeling, 2012. Observations of radiocarbon in CO2 at seven global sampling sites in the Scripps flask network: Analysis of spatial gradients and seasonal cycles. Journal of Geophysical Research, 117, D02303, doi:10.1029/2011JD016535.

Graven, HD, TP Guilderson and RF Keeling, 2012. Observations of radiocarbon in CO2 at La Jolla, California, 1992-2007: Analysis of the long-term trend. Journal of Geophysical Research, 117, D02302, doi:10.1029/2011JD016533.

Graven, HD and N Gruber, 2011. Continental-scale enrichment of 14CO2 from the nuclear power industry: potential impact on the estimation of fossil fuel-derived CO2. Atmospheric Chemistry and Physics, 11, 12,339-12,349, doi:10.5194/acp-11-12339-2011.

Graven, HD, BB Stephens, TP Guilderson, RF Keeling, TL Campos, JE Campbell and DS Schimel, 2009. Estimates of biospheric and fossil fuel-derived CO2 and fossil fuel CO2:CO ratios from airborne measurements of Δ14C, CO2, and CO above Colorado. Tellus B, 61(3), 536-46.

Graven, HD, TP Guilderson, and RF Keeling, 2007. Methods for high-precision 14C AMS measurement of atmospheric CO2 at LLNL, Radiocarbon, 49 (2), 349-356.

Book chapter:

Turnbull, JC, HD Graven, and N Krakauer, 2016. Radiocarbon in the Atmosphere, in Radiocarbon and Climate Change; Mechanisms, Applications and Laboratory Techniques, ed. EAG Schuur, E Druffel, and S Trumbore.

Other publications:

Thomas, R, H Graven, IC Prentice, and B Hoskins, 2016. What is meant by "balancing sources and sinks of greenhouse gases" to stabilize climate? Grantham Briefing Note 3.

Hardwick, S and HD Graven, 2016. Satellite Observations to Support Monitoring of Greenhouse Gas Emissions, Grantham Briefing Paper 19.