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Carbon Dioxide Removal Model Intercomparison Project

CDRMIP in CMIP6

The key questions that are addressed by the first phase of CDRMIP included:

1.) Climate 鈥渞eversibility鈥, in the context of using CDR to return high future atmospheric CO2 concentrations to a lower (e.g. present day or pre-industrial) level.

2) Potential efficacy, feedbacks, time scales, and side effects of different CDR methods.

A more detailed general description of the scientific focus and research questions and how these questions apply to individual experiments can be downloaded . The model simulations are publicly available and hosted on the Earth System Grid Federation ().

Project Leaders

  • David P. Keller, Carbon to Sea Initiative
  • Andrew Lenton, CSIRO
  • Vivian Scott, University of Edimburgh
  • Naomi E. Vaughan, University of East Anglia

Publications (in progress)

  • Uzoma, E.K., Adeniyi, M.O. Projected heat/cold waves and heat stress conditions in West Africa under carbon dioxide removal scenarios. Model. Earth Syst. Environ. 11, 112, , 2025
  • Su, X., Wang, L., Huang, G. et al. Summer precipitation responses to CO2 removal scenario over the transitional climate zone in East Asia and the driving mechanisms. Clim Dyn 63, 153, , 2025
  • Gay, B.A., Mandrake, L., Miner, K.R. et al. Assessing the impacts of mitigation and geoengineering intervention scenarios on Earth system dynamics and climatological variability with multimodal simulations. Sci Rep 15, 8158, , 2025
  • Zhang, S., Qu, X., Huang, G., Hu, P., Reduced rainfall over the Amazon basin in an idealized CO2 removal scenario: Remote dynamic processes. J Environ Sci, 155, 525-537, , 2025
  • Zhang, W., Tao, W., Huang, G. et al. Irreversibility of ENSO impacts on the wintertime anomalous Western North Pacific anticyclone to CO2 forcing. npj Clim Atmos Sci 7, 299, , 2024
  • Zhang, W., Tao, W., Huang, G. et al. Ongoing intensification of anomalous Western North Pacific anticyclone during post-El Ni帽o summer with achieved carbon neutrality. npj Clim Atmos Sci 7, 317,, 2024
  • Xu, Z., Kosaka, Y., Toda, M. et al. Irreversibility of winter precipitation over the Northeastern Pacific and Western North America against CO2 forcing. npj Clim Atmos Sci 7, 300, , 2024
  • Zhang, S., Qu, X., Huang, G.,  Hu, P., Yang, X., Wang, Y.,  Wu, L., Resilience of Amazon rainfall to CO2 removal forcing, Environ Res Lett, , 2024
  • Su, X., Huang, G., Wang, L. et al. Global drought changes and attribution under carbon neutrality scenario. Clim Dyn 62, 7851鈥7868. , 2024
  • S茅f茅rian, R., Bossy, T., Gasser, T. et al. Physical inconsistencies in the representation of the ocean heat-carbon nexus in simple climate models. Commun Earth Environ 5, 291, , 2024
  • Asaadi, A., Schwinger, J., Lee, H., Tjiputra, J., Arora, V., S茅f茅rian, R., Liddicoat, S., Hajima, T., Santana-Falc贸n, Y., and Jones, C. D.: Carbon cycle feedbacks in an idealized simulation and a scenario simulation of negative emissions in CMIP6 Earth system models, Biogeosciences, 21, 411鈥435, , 2024.
  • Wei, T., Chen, Y., Wang, H., Hysteresis of Northern Hemisphere permafrost to carbon dioxide emissions, Environ. Res. Lett. 19 094032, , 2024
  • Jiang, J., Cao, L., Jin, X., et al. Response of ocean acidification to atmospheric carbon dioxide removal, J Environ Sci, 140, 79-90, 2024
  • Freese, L. M., Giani, P., Fiore, A. M., & Selin, N. E., Spatially resolved temperature response functions to CO2 emissions. Geophys Res Lett, 51, e2024GL108788. , 2024
  • Santana-Falc贸n, Y., Yamamoto, A., Lenton, A. et al. Irreversible loss in marine ecosystem habitability after a temperature overshoot. Commun Earth Environ 4, 343, , 2023
  • Qu, X., Huang, G. The primary factors influencing the cooling effect of carbon dioxide removal. npj Clim Atmos Sci 6, 215, , 2023
  • Cao, L., Jin, X.,  Jiang, J., Simulated carbon cycle and Earth system response to atmospheric CO2 removal, Adv. Clim. Chang. Res., 14(2), 313-321, , 2023
  • Zhang, S., Qu, X., Huang, G. et al. Asymmetric response of South Asian summer monsoon rainfall in a carbon dioxide removal scenario, npj Clim Atmos Sci 6, 10,  , 2023
  • Song, SY., Yeh, SW., Allan, R.P. et al. Climate sensitivity controls global precipitation hysteresis in a changing CO2 pathway. npj Clim Atmos Sci 6, 156 , , 2023
  • Quilcaille, Y., Gasser, T., Ciais, P., and Boucher, O.: CMIP6 simulations with the compact Earth system model OSCAR v3.1, Geosci. Model Dev., 16, 1129鈥1161, , 2023.
  • Chimuka, V. R., Nzotungicimpaye, C.-M., and Zickfeld, K.: Quantifying land carbon cycle feedbacks under negative CO2 emissions, Biogeosciences, 20, 2283鈥2299, , 2023.
  • Park, SW., Kug, JS. A decline in atmospheric CO2 levels under negative emissions may enhance carbon retention in the terrestrial biosphere. Commun Earth Environ 3, 289, , 2022
  • Bertini, L., & Tjiputra, J. Biogeochemical timescales of climate change onset and recovery in the North Atlantic interior under rapid atmospheric CO2 forcing. J Geophys Res: Oceans, 127, e2021JC017929. , 2022
  • Song, S.-Y., Yeh, S.-W., An, S.-I., Kug, J.-S., Min, S.-K., Son, S.-W., & Shin, J., Asymmetrical response of summer rainfall in East Asia to CO2 forcing. Sci Bull, 67(2), 213鈥222. , 2022
  • Zhou,S., Huang, P., Xie, S., et al., Varying contributions of fast and slow responses cause asymmetric tropical rainfall change between CO2 ramp-up and ramp-down, Sci Bull, 67(16), , 2022
  • Schwinger, J., Asaadi, A., Goris, N. et al. Possibility for strong northern hemisphere high-latitude cooling under negative emissions. Nat Commun 13, 1095, , 2022
  • Sun, M.-A., Sung, H. M., Kim, J., et al., Reversibility of the Hydrological Response in East Asia from CO2-Derived Climate Change Based on CMIP6 Simulation. Atmosphere, 12(1), 72. , 2021
  • Ziehn, T., Lenton, A. & Law, R. An assessment of land-based climate and carbon reversibility in the Australian Community Climate and Earth System Simulator. Mitig Adapt Strateg Glob Change 25, 713鈥731, , 2020
  • K枚hler, P.: Anthropogenic CO2 of high emission scenario compensated after 3500 years of ocean alkalinization with an annually constant dissolution of 5鈥塒g of olivine, Front Clim, 2, 575744, , 2020.鈥
  • Jeltsch-Th枚mmes, A.,  Stocker, T. F., Joos, F., Hysteresis of the Earth system under positive and negative CO2 emissions, Environ. Res. Lett. 15 124026, , 2020
  • Tachiiri K., Hajima, T., Kawamiya, M., Increase of the transient climate response to cumulative carbon emissions with decreasing CO2 concentration scenarios, Environ. Res. Lett. 14 124067, , 2019
  • Schwinger, J., & Tjiputra, J. F., Ocean carbon cycle feedbacks under negative emissions. Geophysical Research Letters, 45, 5062鈥5070. , 2018
  • Keller, D. P., Lenton, A., Scott, V., Vaughan, N. E., Bauer, N., Ji, D., Jones, C. D., Kravitz, B., Muri, H., and Zickfeld, K.: The Carbon Dioxide Removal Model Intercomparison Project (CDRMIP): rationale and experimental protocol for CMIP6, Geosci. Model Dev., 11, 1133-1160, , 2018
  • Lenton, A., D. Keller, and P. Pfister , How will Earth respond to plans for carbon dioxide removal?, Eos, 98, , 2017