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Sun, Y., Zhu, S., Wang, D. et al. Global supply chains amplify economic costs of future extreme heat risk. Nature 627, 797–804 (2024)

Objective:

  • Provide insight into the far reaching impacts of heat stress across global supply chains and how such impacts evolve spatially and over long time scales

Case:

  • Global countries

Methodology:

  • Climate model:
    • GCM and ISIMIP3b
  • CGE and IO

Data Source

  • GTAP
  • Multimodal meteorogical data: World climate research programme
  • Socioeconomic data: SSP scenarios of IIASA
  • Population 2001-2100: SEDAC

Findings:

  • Under shared socioeconomic paths (SSP), total global loss in 2040: GDP loss (0.9%), health loss (0.5%), labor productivity (0.3%), indirect loss (0.1%)
  • The global average heatwave days would increase by 24% compared to 2022
  • Global losses display nonlinear growth trend
  • The proportion of global GDP loss due to supply-chain disruptions is 0.1%-1.5%
  • Countries whose densely inhabited districts are expected to suffer from severe future warming and temperature anomalies, are the most vulnerable to health losses in terms of excess mortality
  • Low-income emerging economies in the warmest climatic zones are more likely to suffer labor productivity loss
  • Samll to medium-sized economies with strong and diverse connections to the most affected regions in the GVC are highly vulnerable to indirect effects
  • Crop farming, construction and mining sectors are the msot affected in most countries
  • Supply chains amplify the risk of future heat stress by causing nonlinear economic losses worldwide

Coding Reference:

  • R: just analysing code