The GESI measures a country's ability to maintain environmental conditions that support human life and well-being for future generations, regardless of government structure. It incorporates these key components:
- Resource Depletion Rate: Measures how quickly a country is consuming non-renewable resources relative to their availability and replenishment rates.
- Carbon Footprint and Climate Impact: Tracks emissions, temperature anomalies, and climate adaptation measures.
- Biodiversity Preservation: Quantifies species loss rates, habitat protection, and ecosystem integrity.
- Water Security: Evaluates freshwater availability, quality, and management practices.
- Land Use Sustainability: Assesses soil health, deforestation rates, and land degradation.
- Pollution Levels: Measures air, water, and soil contamination using standardized metrics.
- Circular Economy Implementation: Evaluates waste management, recycling rates, and resource reuse.
- Renewable Energy Transition: Tracks the percentage of energy from renewable sources and investment in clean energy.
Calculation:
$GESI = (0.15×Resource) + (0.2×Climate) + (0.15×Biodiversity) + (0.15×Water) + (0.1×Land) + (0.1×Pollution) + (0.07×Circular) + (0.08×Energy)$
This weighted formula leverages objective, measurable indicators to output a number that emphasizes intergenerational equity.
Data sources include:
- Satellite imagery
- Environmental monitoring stations
- National environmental reporting
- Independent scientific assessments
- UN environmental data