A Combined Mitigation/Geoengineering Approach to Climate Stabilization
2006
Wigley, T.M.L.
Projected anthropogenic warming and increases in CO₂ concentration present a twofold threat, both from climate changes and from CO₂ directly through increasing the acidity of the oceans. Future climate change may be reduced through mitigation (reductions in greenhouse gas emissions) or through geoengineering. Most geoengineering approaches, however, do not address the problem of increasing ocean acidity. A combined mitigation/geoengineering strategy could remove this deficiency. Here we consider the deliberate injection of sulfate aerosol precursors into the stratosphere. This action could substantially offset future warming and provide additional time to reduce human dependence on fossil fuels and stabilize CO₂ concentrations cost-effectively at an acceptable level.
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