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Synergistic Impact of Carbon and Nitrogen on Global Climate Mitigation

Analyzing the effects of nitrogen fertilization on global warming reduction through land carbon uptake response to CO2 and N deposition using CLIMBER-BGC model. Examine the balance between negative and positive effects of nitrogen deposition on ecosystems.

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Synergistic Impact of Carbon and Nitrogen on Global Climate Mitigation

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  1. Can nitrogen fertilization effect reduce global warming? Galina Churkina MPI-BGC, Germany

  2. Response of European NEP to CO2, N, and CO2+N CO2+N N CO2 Simulation results from CLIMBER-BGC model for land with croplands excluded

  3. Mean NEP in 1990’s Churkina et al. GCB, in review

  4. Clim+CO2 Clim+CO2+Nhigh/CO2+N Clim+CO2+Nhigh(no landuse) What does it all mean for global climate? Churkina et al. GCB, in review

  5. Summary • Strong synergistic response of land carbon uptake to increasing CO2 and N deposition can mitigate global warming • Does negative effect of nitrogen deposition on ecosystems counteract its positive effect over large areas?

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