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Modeling loss-propagation in the global supply network: The dynamic agent-based model acclimate

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  • Otto, C.
  • Willner, S.N.
  • Wenz, L.
  • Frieler, K.
  • Levermann, A.

Abstract

World markets are highly interlinked and local economies extensively rely on global supply and value chains. Consequently, local production disruptions, for instance caused by extreme weather events, are likely to induce indirect losses along supply chains with potentially global repercussions. These complex loss dynamics represent a challenge for comprehensive disaster risk assessments. Here, we introduce the numerical agent-based model acclimate designed to analyze the cascading of economic losses in the global supply network. Using national sectors as agents, we apply the model to study the global propagation of losses induced by stylized disasters. We find that indirect losses can become comparable in size to direct ones, but can be efficiently mitigated by warehousing and idle capacities. Consequently, a comprehensive risk assessment cannot focus solely on first-tier suppliers, but has to take the whole supply chain into account. To render the supply network climate-proof, national adaptation policies have to be complemented by international adaptation efforts. In that regard, our model can be employed to assess reasonable leverage points and to identify dynamic bottlenecks inaccessible to static analyses.

Suggested Citation

  • Otto, C. & Willner, S.N. & Wenz, L. & Frieler, K. & Levermann, A., 2017. "Modeling loss-propagation in the global supply network: The dynamic agent-based model acclimate," Journal of Economic Dynamics and Control, Elsevier, vol. 83(C), pages 232-269.
  • Handle: RePEc:eee:dyncon:v:83:y:2017:i:c:p:232-269
    DOI: 10.1016/j.jedc.2017.08.001
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    More about this item

    Keywords

    Disaster impact analysis; Higher-order effects; Economic network; Resilience; Dynamic input-output model; Agent-based modeling;
    All these keywords.

    JEL classification:

    • F10 - International Economics - - Trade - - - General
    • F18 - International Economics - - Trade - - - Trade and Environment
    • Q54 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Climate; Natural Disasters and their Management; Global Warming
    • Q56 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Environment and Development; Environment and Trade; Sustainability; Environmental Accounts and Accounting; Environmental Equity; Population Growth

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