Taxing interacting externalities of ocean acidification, global warming, and 
eutrophication

Hänsel, Martin C.; van den Bergh, Jeroen C. J. M.

doi:10.1111/nrm.12317

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Taxing interacting externalities of ocean acidification, global warming, and eutrophication

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/persons/resource/Martin.Haensel

Hänsel, Martin C.
Potsdam Institute for Climate Impact Research;

van den Bergh, Jeroen C. J. M.
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Citation

Hänsel, M. C., van den Bergh, J. C. J. M. (2021): Taxing interacting externalities of ocean acidification, global warming, and eutrophication. - Natural Resource Modeling, 34, 3, e12317.
https://doi.org/10.1111/nrm.12317

Cite as: https://publications.pik-potsdam.de/pubman/item/item_25708

Abstract

We model a stylized economy dependent on agriculture and fisheries to study optimal environmental policy in the face of interacting external effects of ocean acidification, global warming, and eutrophication. This allows us to capture some of the latest insights from research on ocean acidification. Using a static two-sector general equilibrium model we derive optimal rules for national taxes on urn:x-wiley:08908575:media:nrm12317:nrm12317-math-0001 emissions and agricultural run-off and show how they depend on both isolated and interacting damage effects. In addition, we derive a second-best rule for a tax on agricultural run-off of fertilizers for the realistic case that effective internalization of urn:x-wiley:08908575:media:nrm12317:nrm12317-math-0002 externalities is lacking. The results contribute to a better understanding of the social costs of ocean acidification in coastal economies when there is interaction with other environmental stressors.