The role of spatial scale in the timing of uncertain environmental policy

Charles Sims and David Finnoff

Journal of Economic Dynamics and Control, 2012, vol. 36, issue 3, 369-382

Abstract: The spatial scale of an environmental problem is dictated by boundaries. Physical boundaries limit the extent of impacts while the scale of decision making creates perceived boundaries beyond which impacts are ignored by decision makers. While it is well understood that uncertainty and irreversibility will alter policy decisions aimed at alleviating environmental impacts, the effect of spatial scales, both physical and perceived, is less understood. When spatial scale is included in a real options model of environmental policy adoption results indicate that the importance and influence of spatial considerations depends on the level of uncertainty, stringency of the proposed policy and flexibility of the policy decision. Recognizing spatial scale may force policy adoption to take place within a window of current damage. When spatial scale is small or uncertainty high, this window for policy adoption can close precluding policy adoption entirely. This undermines well-known results demonstrating that changes in uncertainty will only alter the timing of policy adoption. In other instances, the policy adoption window remains open but the option value increases faster than the benefits of the policy creating a scenario where it is always preferable to delay. Here the inclusion of an option value can prevent adoption of policies that would be adopted according to traditional cost-benefit analysis. In general policy decisions will be most affected by spatial considerations when the spatial scale is small, damage is spreading fast, and the uncertainty in damage spread is high.

Keywords: Reflecting barrier; Brownian motion; Irreversibility; Real options; Spatial boundary (search for similar items in EconPapers)
JEL-codes: D81 H43 Q58 (search for similar items in EconPapers)
Date: 2012
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (11)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:dyncon:v:36:y:2012:i:3:p:369-382

DOI: 10.1016/j.jedc.2011.09.001

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