Global Geoeconomic Reconfiguration: The Macroeconomic Impacts of a Potential AMOC Collapse
A recent economic analysis indicates that the potential collapse of the AMOC current, a climate tipping point, could reconfigure the global economy. The study projects GDP and welfare losses for Scandinavia and Russia, while Southern Europe, North Africa, and Brazil may benefit from milder temperatures. Although global welfare drops by 1.9% by 2200, there is a potential reduction in spatial inequality, with mitigated impacts in some developing regions and costs for advanced economies.
The Atlantic Meridional Overturning Circulation (AMOC) stands as a critical pillar in global climate regulation, exerting a moderating influence on temperatures across Europe and the North Atlantic. The prospect of its collapse, driven by global warming, is recognized as one of the most plausible climate tipping points, carrying profound implications not only environmentally but also economically. A recent analysis, utilizing a dynamic spatially integrated assessment model (S-IAM), projects complex economic scenarios that challenge conventional expectations regarding climate change impacts. This study underscores the urgency of integrating such risks into macroeconomic projections and market strategies.
The research findings indicate a notable regional divergence in economic impacts. While advanced economies such as Scandinavia and parts of Russia could face significant losses in their Gross Domestic Product (GDP) and social welfare due to pronounced cooling, other regions might experience some relief. Countries in Southern Europe, North Africa, and Brazil, for instance, could benefit from slightly milder temperatures, mitigating some of the negative effects of global warming. Such a reconfiguration of climatic patterns and, consequently, of agricultural productivity, energy demand, and tourism flows, represents a dual vector of risk and opportunity for investors and policymakers alike.
From a global perspective, an AMOC collapse projects a 1.9% drop in global welfare by 2200 under an intermediate-emissions scenario. However, one of the most intriguing aspects is the potential reduction in spatial inequality. S-IAM models frequently predict that global warming disproportionately penalizes low-income regions. Yet, an AMOC collapse could mitigate some of these adverse impacts in parts of the developing world, while imposing costs on some of the more advanced economies. This suggests a complex redistribution of risks and benefits, necessitating a re-evaluation of long-term investment strategies and climate adaptation policies on a global scale.
Source original: NBER Working Papers
Source: NBER Working Papers