Abstract
Scientists predict higher global temperatures over this century. While this may benefit some countries, most will face varying degrees of damage. This has motivated research on solar geoengineering, a technology that allows countries to unilaterally and temporarily lower global temperatures. To better understand the security implications of this technology, we develop a simple theory that incorporates solar geoengineering, countergeoengineering to reverse its effects, and the use of military force to prevent others from modifying temperatures. We find that when countries’ temperature preferences diverge, applications of geoengineering and countergeoengineering can be highly wasteful due to deployment in opposite directions. Under certain conditions, countries may prefer military interventions over peaceful ones. Cooperation that avoids costs or waste of resources can emerge in repeated settings, but difficulties in monitoring or attributing interventions make such arrangements less attractive.
Similar content being viewed by others
Notes
Solar geoengineering actually encompasses a class of technologies, including stratospheric aerosol scattering, seeking to break links between GHG concentrations and temperatures (Harvard Solar Geoengineering Research Program 2020). In keeping with related social science research, we refer to stratospheric aerosol scattering using the metonym “solar geoengineering” in the remainder of the paper.
We do not discuss normative issues about the deployment of solar geoengineering or countergeoengineering or about the use of conflict to restrict deployment. See Parker (2014) for ongoing ethical debates on the topic.
In the remainder of the paper, we will use deployment as a general term for geoengineering or countergeoengineering applications.
What differentiates geoengineering is that superior military or economic power is not required for deployment. Unilateral application by one of the many actors can have global or regional implications. As we discuss later in the paper, monitoring deployment is also likely to pose additional challenges.
See Vaughan and Lenton (2011) for a review of different proposed methods of deployment.
See Online Supplementary Materials for further description of the properties and their implications.
Further discussion about the relationship between the technology’s properties and challenges in governing it can be found in Online Supplementary Materials. For a more extensive review, see Reynolds (2019).
The “Inquisitive Effect” encourages high deployment levels to distinguish the effects of solar geoengineering from stochastic noise, while “Flexibility Effect” encourages low deployment that can be scaled up if solar geoengineering is effective and produces few side effects.
In decreasing the marginal cost of emissions, solar geoengineering also decreases the credibility of future carbon taxes, prompting firms to under-invest in clean energy technology.
These parameters make the model amenable to incorporating differences in actors’ marginal costs and benefits and marginal rates of substitution.
For presentational purposes, we assume that implementation of geoengineering and countergeoengineering are symmetrical, both in terms of deployment costs and overall side effects. Allowing for differential costs and effects (through ki and si) for each technology would not change the substantive conclusions as long as the remaining functional form assumptions are maintained.
The proofs of the propositions are given in the Online Supplementary Materials.
For instance, when \(\tau _A = \tau _B =\bar {\tau } > 0\), and \(k_A = k_B = \bar {k}\), both countries deploy \(g_i = \frac {\bar {\tau }}{k+2}\), resulting in a net temperature that is less than \(\bar {\tau }\).
The choice of conflict to obtain unilateral control over deployment could be interpreted more broadly to include targeted strikes on deployment facilities, the imposition of sanctions on equipment needed to geoengineer, and information campaigns to mobilize domestic opposition to the deployment.
Modeling conflict in this manner as a costly lottery is standard in the international relations literature on bargaining and war. In line with this work, expected outcomes are a function of countries’ balance of power and resolve, which are reflected in their probability of winning and costs of conflict. For examples, see Fearon (1995) and Bas and Coe (2012).
We model conflict only as it pertains to the issue of controlling the climate, so its winner only obtains unilateral control over deployment, nothing else. While we assume that the winner permanently prevents interventions by the opponent, our results extend to temporary controls. Finally, for simplicity of exposition, we do not model crisis bargaining, which can be captured by various cooperative equilibria we analyze in the next section.
One may also argue that states would always seek to resolve Pareto-inferior deployments using peaceful alternatives to conflict, such as imposing economic sanctions or maintaining armament levels for deterrence. While such alternatives may seem less costly than conflict over comparable time-frames, research in international relations suggests that their costs may accumulate when they need to be adopted for long periods of time to maintain peace. See Coe (2019) for an analysis comparing the costs of containment and war prior to the Iraq War in 2003.
According to MacMartin et al. (2019), currently available technology limits the temperature effects of feasible deployment, making them indistinguishable from natural temperature fluctuations in the short run. Temperature changes attributable to deployment may thus require a window of multiple years before they are confidently detected. In our model, this would correspond to a situation with high levels of noise in temperatures, meaning that the variance of \(T \sim F(t | g_A, g_B)\) is high.
In this section, we only consider equilibria in which states condition their behavior on temperatures from the previous period when there is no direct evidence of deployment. That being said, more complicated equilibria in which states make longer term observations of temperature trends over time to dynamically assess past defections from cooperation can also exist.
Such conditional strategies based on simple cutpoints can trivially be a part of an equilibrium as the punishment itself is an equilibrium of the game.
References
Acemoglu D, Rafey W (2018) Mirage on the horizon: geoengineering and carbon taxation without commitment, Working Paper
Ahlvik L, Iho A (2018) Optimal geoengineering experiments. Journal of Environmental and Economic Management 92:148–168
Barrett S (2014) Solar geoengineering’s brave new world: thoughts on the governance of an unprecedented technology. Review of Environmental Economics and Policy 8(2):249–269
Bas MA, Coe AJ (2012) Arms diffusion and war. Journal of Conflict Resolution 56(4):651–674
Bas MA, Coe AJ (2016) A dynamic theory of nuclear proliferation and preventive war. International Organization 70(4):655–685
Bollfrass A, Shaver A (2015) The effects of temperature on political violence: global evidence at the subnational level. PLOS One 10(5):e0123505
Broecker WS (1985) How to build a habitable planet. Eldigio Press New York
Buhaug H, Nordkvelle J, Bernauer T, Böhmelt T, Brzoska M, Busby JW, Ciccone A, Fjelde H, Gartzke E, Gleditsch NP, et al. (2014) One effect to rule them all? a comment on climate and conflict. Climatic Change 127 (3-4):391–397
Burke M, Hsiang SM, Miguel E (2015a) Climate and conflict. Annual Review of Economics 7(1):577–617
Burke M, Hsiang SM, Miguel E (2015b) Global non-linear effect of temperature on economic production. Nature 527(7577):235–239
Caldeira K, Bala G, Cao L (2013) The science of geoengineering. Annual Review of Earth and Planetary Sciences 41:231–256
Coe AJ (2019) Costly peace: A new rationalist explanation for war, Working paper available at https://eafdab1c-1639-49a6-b387-40b17853bd79.filesusr.com/ugd/c8f493_50287f9e40c843b7abcd24388f9f0c6a.pdf
Crutzen PJ (2006) Albedo enhancement by stratospheric sulfur injections: a contribution to resolve a policy dilemma? Climatic Change 77(3):211–220
Ding D, Maibach EW, Zhao X, Roser-Renouf C, Leiserowitz A (2011) Support for climate policy and societal action are linked to perceptions about scientific agreement. Nat Climatic Change 1(9):462
Egan PJ, Mullin M (2016) Recent improvement and projected worsening of weather in the United States. Nature 532(7599):357–360
Fearon JD (1995) Rationalist explanations for war. Int Organ 49 (3):379–414
Gautier DL, Bird KJ, Charpentier RR, Grantz A, Houseknecht DW, Klett TR, Moore TE, Pitman JK, Schenk CJ, Schuenemeyer JH, et al. (2009) Assessment of undiscovered oil and gas in the Arctic. Science 324 (5931):1175–1179
Gertner J (2017) Is it O.K. to tinker with the environment to fight climate change? The New York Times https://www.nytimes.com/2017/04/18/magazine/is-it-ok-to-engineer-the-environment-to-fight-climate-change.htmlhttps://www.nytimes.com/2017/04/18/magazine/is-it-ok-to-engineer-the-environment-to-fight-climate-change.html
Harding A, Moreno-Cruz JB (2016) Solar geoengineering economics: from incredible to inevitable and half-way back. Earth’s Future 4(12):569–577
Harvard Solar Geoengineering Research Program (2020) Geoengineering. https://geoengineering.environment.harvard.edu/geoengineering
Heyen D, Horton J, Moreno-Cruz J (2019) Strategic implications of counter-geoengineering: clash or cooperation? Journal of Environmental and Economic Management 95:153–177
Hornsey MJ, Harris EA, Bain PG, Fielding KS (2016) Meta-analyses of the determinants and outcomes of belief in climate change. Nat Climatic Change 6(6):622
Hsiang S, Kopp R, Jina A, Rising J, Delgado M, Mohan S, Rasmussen D, Muir-Wood R, Wilson P, Oppenheimer M, et al. (2017) Estimating economic damage from climate change in the united states. Science 356 (6345):1362–1369
Keith DW (2000) Geoengineering the climate: history and prospects. Annual Review of Energy and the Environment 25(1):245–284
Keith DW, Weisenstein DK, Dykema JA, Keutsch FN (2016) Stratospheric solar geoengineering without ozone loss. Proceedings of the National Academy of Sciences 113(52):14910–14914
Lloyd ID, Oppenheimer M (2014) On the design of an international governance framework for geoengineering. Global Environmental Politics 14(2):45–63
MacMartin DG, Irvine PJ, Kravitz B, Horton JB (2019) Technical characteristics of a solar geoengineering deployment and implications for governance. Climate Policy 19(10):1325–1339
Mahajan A, Tingley D, Wagner G (2019) Fast, cheap, and imperfect? us public opinion about solar geoengineering. Environmental Politics 28(3):523–543
Manoussi V, Xepapadeas A (2017) Cooperation and competition in climate change policies: mitigation and climate engineering when countries are asymmetric. Environmental and Resource Economics 66(4):605–627
McClellan J, Sisco J, Suarez B, Keogh G (2010) Geoengineering cost analysis, final report Aurora Flight Sciences Corporation, Cambridge, Massachusetts
Meirowitz A, Morelli M, Ramsay KW, Squintani F (2019) Dispute resolution institutions and strategic militarization. Journal of Political Economy 127 (1):378–418
Millard-Ball A (2012) The Tuvalu syndrome. Climatic Change 110 (3):1047–1066
Morelli M (2009) Institutional design and conflict: an introduction. Rev Econ Des 13(3):167
Moreno-Cruz JB (2010) Essays on the economics of geoengineering, PhD Dissertation
Moreno-Cruz JB (2015) Mitigation and the geoengineering threat. Resource Energy Economics 41:248–263
National Research Council (2015) Climate intervention: reflecting sunlight to cool Earth. National Academies Press
Parker A (2014) Governing solar geoengineering research as it leaves the laboratory. Philosophical Transactions of the Royal Society 372(2031):20140173
Parker A, Keith DW (2015) What’s the right temperature for the earth. Washington Post
Parker A, Horton JB, Keith DW (2018) Stopping solar geoengineering through technical means: a preliminary assessment of counter-geoengineering. Earth’s Future https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2018EF000864
Powell R (1999) In the shadow of power: states and strategies in international politics. Princeton University Press
Powell R (2002) Bargaining theory and international conflict. Annual Review of Political Science 5(1):1–30
Reynolds JL (2019) Solar geoengineering to reduce climate change: a review of governance proposals. Proceedings of the Royal Society A 475 (2229):20190255
Ricke KL, Moreno-Cruz JB, Caldeira K (2013) Strategic incentives for climate geoengineering coalitions to exclude broad participation. Environmental Research Letters 8(1):014021
Robock A (2012) Will geoengineering with solar radiation management ever be used? Ethics. Policy and Environment 15(2):202–205
Schelling TC (1983) Climatic change: implications for welfare and policy, National Research Council, Carbon Dioxide Assessment Committee. In: Changing climate: Report of the carbon dioxide assessment committee, National Academies, pp 449–497
Schelling TC (1996) The economic diplomacy of geoengineering. Climatic Change 33(3):303–307
Shepherd JG (2009) Geoengineering the climate: science, governance and uncertainty. The Royal Society
Svoboda T, Irvine P (2014) Ethical and technical challenges in compensating for harm due to solar radiation management geoengineering. Ethics, Policy and Environment 17(2):157–174
Teller E, Wood L, Hyde R (1997) Global warming and ice ages: prospects for physics based modulation of global change. Tech rep. Lawrence Livermore National Lab., CA United States
Tol RS (2018) The economic impacts of climate change. Review of Environmental Economics and Policy 12(1):4–25
Urpelainen J (2012) Geoengineering and global warming: a strategic perspective. International Environmental agreements: Politics. Law and Economics 12 (4):375–389
Vaughan NE, Lenton TM (2011) A review of climate geoengineering proposals. Climatic Change 109(3-4):745–790
Victor DG, Morgan MG, Apt J, Steinbruner J, Ricke K (2009) The geoengineering option: a last resort against global warming? Foreign Affairs 88:64–76
Waltz K (1959) Man, the state and war: a theoretical analysis. Columbia University Press, New York
Weitzman ML (2015) A voting architecture for the governance of free-driving externalities with application to geoengineering. The Scandinavian Journal of Economics 117(4):1049–1068
Williamson P, Turley C (2012) Ocean acidification in a geoengineering context. Philosophical Transactions of the Royal Society 370(1974):4317–4342
Yumashev D, van Hussen K, Gille J, Whiteman G (2017) Towards a balanced view of Arctic shipping: estimating economic impacts of emissions from increased traffic on the Northern Sea Route. Climatic Change, vol 143
Acknowledgments
We thank the Weatherhead Initiative on Climate Engineering and the Solar Geoengineering Research Program of Harvard University for support. We also thank Elena McLean, Torben Mideksa, Dustin Tingley, and Gernot Wagner and the participants in Harvard University’s Political Economy workshop for comments on earlier versions of this paper.
Author information
Authors and Affiliations
Contributions
Both authors contributed equally to the writing of this manuscript and associated analysis. Authors’ names are listed in alphabetical order.
Corresponding author
Ethics declarations
Conflict of interests
The authors declare that they have no conflict of interest.
Additional information
Publisher’s note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Electronic supplementary material
Below is the link to the electronic supplementary material.
Rights and permissions
About this article
Cite this article
Bas, M.A., Mahajan, A. Contesting the climate. Climatic Change 162, 1985–2002 (2020). https://doi.org/10.1007/s10584-020-02758-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10584-020-02758-7