Open-source Tools for Physical Risk Analysis

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Catastrophe models

  • CLIMADA: An open-source risk assessment model developed by ETH Zurich.[1] It uses probalistic modelling to estimate the expected economic damage as a measure of risk today. The model is well suited to provide an open and independent view on physical risk, in line with TCFD and underpins the Economics of Climate Adaptation (ECA) approach. As of today, it provides global coverage of major climate-related extreme-weather hazards (tropical cyclones, river flood, agro drought, and European winter storms) at high resolution (4km) for historic and some selected climate forcing scenarios (RCPs). Also see the introduction by European Environment Agency.
  • The Oasis Loss Modelling Framework ("LMF"): an open source catastrophe modeling platform. It developed by a nonprofit organization funded and owned by the Insurance Industry to promote open access to models and to promote transparency. Additionally, some firms within the insurance industry are currently working with the Association for Cooperative Operations Research and Development (ACORD) to develop an industry standard for collecting and sharing exposure data.
  • An open-source tools for the modelling and management of climate change risks is developed using CLIMADA by European Insurance and Occupational Pensions Authority (EIOPA)

Macroeconomic models

Table 1 Types of Economic Models to Assess Climate Risks (reproduced from NGFS (2020)[2])
Lineage Model Type Description Example
Integrated climate-economy

models

Cost-benefit IAMs Highly aggregated model that optimises welfare by determining emissions abatement  at each step DICE, DSICE (Cai et al., 2012[3], Barrage, 2020[4])
IAMs with detailed energy system and land use Detailed partial (PE) or general equilibrium (GE) models of the energy system and land use. General equilibrium types are linked to a simple growth model PE: GCAM, IMAGE GE: MESSAGE,  REMIND-MAgPIE, WITCH[5]
Computable General Equilibrium  (CGE) IAMs Multi-sector and region equilibrium models  based on optimising behaviour assumptions G-CUBED, AIM, MIT-EPPA, GTAP, GEM-E3
Macro-econometric IAMs Multi-sector and region model similar to CGE but econometrically calibrated E3ME, Mercure et al., 2018[6]
Stock-flow consistent IAMs Highly aggregated model of climate change and the monetary economy that is stock-flow consistent Bovari et al., 2018[7]
Other climate-economy models Input-output (IO) models Model that tracks interdependencies between different sectors to more fully assess impacts Ju and Chen, 2010[8]

Koks and Thissen, 2016[9]

Econometric studies Studies assessing impact of physical risks on macroeconomic variables (e.g. GDP, labour  productivity) based on historical relationships Kahn et al., 2019[10]

Burke et al., 2015[11] Dell et al., 2012[12]

Natural catastrophe models and micro-empirical studies Spatially granular models and studies assessing bottom-up damages from physical risks SEAGLASS (e.g. Hsiang et al., 2017[13])
Modified standard macroeconomic models DSGE models Dynamic equilibrium models based on optimal decision rules of rational economic agents Golosov et al., 2014[14]

Cantelmo et al. 2019[15]

E-DSGE Slightly modified standard frameworks (that  allow for negative production externalities) Heutel, 2012[16]
Large-scale econometric models Models with dynamic equations to represent demand and supply, coefficients based

on regressions

NiGEM (e.g. Vermeulen et al., 2018[17])
  • For further guidance on selecting appropriate macroeconomic models, see the recommendations on page 29.

NGFS Scenarios Portal

  • The NGFS Climate Scenarios Portal provides a comprehensive suite of data and tools to analyze transition risks, physical risks, and their broader economic and financial impacts. This was created for central banks and financial supervisors but has been reported useful for private sectors. This resource is widely recognized and used by key regulatory bodies, including the Basel Committee on Banking Supervision[18] and European Central Bank[19].

Others

  • Physical Risk Toolkit by C2ES This toolkit helps companies identify data and information providers for conducting physical climate risk assessments, focusing on US-based publicly available federal and academic resources. It includes some tools from private organizations but does not endorse them. The toolkit mainly serves as a starting point for further analysis.

References

  1. ETHZürich, “CLIMADA: Economics of Climate Adaptation,” https://wcr.ethz.ch/research/climada.html.
  2. NGFS, 2020: Guide to climate scenario analysis for central banks and supervisors.
  3. Cai, Y., Judd, K. L., & Lontzek, T. S. (2012) DSICE: a dynamic stochastic integrated model of climate and  economy. RDCEP Working Paper 12-02.
  4. Barrage, L. (2020) Optimal Dynamic Carbon Taxes in a Climate–Economy  Model  with  Distortionary  Fiscal  Policy.  The  Review  of   Economic Studies, 87(1), 1-39.
  5. Model documentation available at www.iamcdocumentation.eu/index.php/IAMC_wiki
  6. Mercure, J. F., Pollitt, H., Viñuales, J. E.,  Edwards, N. R., Holden, P. B., Chewpreecha, U., ...  & Knobloch, F. (2018) Macroeconomic impact of stranded fossil fuel assets. Nature  Climate Change, 8(7), 588-593.
  7. Bovari, E., Giraud, G., & Mc Isaac, F. (2018) Coping with collapse: a stock-flow consistent monetary macrodynamics of global warming. Ecological Economics,  147, 383-398.
  8. Ju, L. & Chen, B. (2010) An input-output model to analyse sector linkages and CO2 emissions. Procedia Environmental Sciences,  2, 1841-1845.
  9. Koks, E. E., & Thissen, M. (2016) A multiregional impact assessment model for disaster analysis. Economic Systems Research, 28(4), 429-449.
  10. Kahn, M. E., Mohaddes, K., Ng, R. N., Pesaran, M. H., Raissi, M., & Yang, J. C. (2019) Long-term macroeconomic effects of climate change: A cross-country analysis (No. w26167). National Bureau of Economic Research.
  11. Burke, M., Hsiang, S. M., & Miguel, E. (2015) Global non-linear effect of temperature on economic production. Nature, 527(7577), 235-239.
  12. Dell, M., Jones, B. F., & Olken, B. A. (2012) Temperature shocks and economic growth: Evidence  from the last half century. American Economic Journal:  Macroeconomics, 4(3), 66-95.
  13. Hsiang, S., Kopp, R., Jina, A., Rising, J., Delgado, M., Mohan, S., ... & Larsen, K. (2017) Estimating economic damage from climate change in the United States. Science, 356(6345), 1362-1369.
  14. Golosov, M., Hassler, J., Krusell, P., & Tsyvinski, A. (2014) Optimal  taxes on fossil fuel in general equilibrium. Econometrica, 82(1), 41-88.
  15. Cantelmo, M. A., Melina, M. G., & Papageorgiou, M. C.  (2019) Macroeconomic Outcomes in Disaster-Prone Countries. International Monetary Fund, Working Paper No.19/217, October 2019.
  16. Heutel, G. (2012) How should environmental policy respond to business cycles? Optimal policy under persistent productivity shocks. Review of Economic Dynamics, 15(2), 244-264.
  17. Vermeulen, R., Schets, E., Lohuis, M., Kolbl, B., Jansen, D. J., & Heeringa, W. (2018) An energy transition risk stress test for the financial system of the Netherlands. DNB Occasional Studies, 160-7.
  18. Basel Committee on Banking Supervision (BCBS), 2022. Principles for the effective management and supervision of climate‐related financial risks.
  19. Alogoskoufis, Spyros, et al. ECB economy-wide climate stress test: Methodology and results. No. 281. ECB Occasional Paper, 2021.