Articles | Volume 19, issue 13
https://doi.org/10.5194/gmd-19-5961-2026
https://doi.org/10.5194/gmd-19-5961-2026
Development and technical paper
 | 
08 Jul 2026
Development and technical paper |  | 08 Jul 2026

TRACE-Python: tracer-based rapid anthropogenic carbon estimation implemented in Python (version 1.0)

Daniel E. Sandborn, Brendan R. Carter, Mark J. Warner, and Larissa M. Dias

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Tracer-based Rapid Anthropogenic Carbon Estimation (TRACE)
Brendan R. Carter, Jörg Schwinger, Rolf Sonnerup, Andrea J. Fassbender, Jonathan D. Sharp, Larissa M. Dias, and Daniel E. Sandborn
Earth Syst. Sci. Data, 17, 3073–3088, https://doi.org/10.5194/essd-17-3073-2025,https://doi.org/10.5194/essd-17-3073-2025, 2025
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Cited articles

Archer, D., Kheshgi, H., and Maier-Reimer, E.: Dynamics of Fossil Fuel CO2 Neutralization by Marine CaCO3, Global Biogeochem. Cy., 12, 259–276, https://doi.org/10.1029/98GB00744, 1998. a
Barker, P. M. and McDougall, T. J.: Two Interpolation Methods Using Multiply-Rotated Piecewise Cubic Hermite Interpolating Polynomials, J. Atmos. Ocean. Tech., 37, 605–619, https://doi.org/10.1175/JTECH-D-19-0211.1, 2020. a
Bronselaer, B., Winton, M., Russell, J., Sabine, C. L., and Khatiwala, S.: Agreement of CMIP5 Simulated and Observed Ocean Anthropogenic CO2 Uptake, Geophys. Res. Lett., 44, https://doi.org/10.1002/2017gl074435, 2017. a
Bullister, J. L. and Warner, M. J.: Atmospheric Histories (1765–2022) for CFC-11, CFC-12, CFC-113, CCl4, SF6 and N2O (NCEI Accession 0164584), https://doi.org/10.3334/CDIAC/OTG.CFC_ATM_HIST_2015, 2017. a
Carter, B. R.: Anthropogenic Carbon Distributions from Preindustrial to 2500 c.e. Estimated Using Tracer-based Rapid Anthropogenic Carbon Estimation (Version 1), Zenodo [data set], https://doi.org/10.5281/ZENODO.15003059, 2025a. a
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We present a new implementation of our method for estimation of human-created carbon dioxide in the ocean. Tracer-based Rapid Anthropogenic Carbon Estimation relies on transient tracer measurements to infer gas exchange and circulation. Our work implements practical and fundamental improvements increasing accessibility, flexibility, and skill of the method. We provide an updated data product of global ocean carbon inventories spanning the industrial era and a range of future projections.
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