Replication Archive for: Governance Reform Unlocks Decarbonization Dead Zones in Public Procurement

Replication archive

This Zenodo record distributes the replication archive for Governance Reform Unlocks Decarbonization Dead Zones in Public Procurement (submitted to Nature Sustainability). The primary artifact is Data.zip, a repository-aligned archive that expands into the Data/ tree expected by the analysis scripts.

What Data.zip contains

• Processed procurement datasets, including Data/processed/gprd_with_carbon.parquet used by the verification and analysis scripts
• Reference tables, external validation inputs, and raw-source derivatives needed for the published results
• Data documentation and audit notes that travel with the extracted Data/ directory

Reproduction workflow

1. Clone the GitHub repository
2. Download Data.zip from this Zenodo record
3. Extract Data.zip at the repository root so that the archive recreates the Data/ folder in place
4. Run python verify_all_claims.py for the one-command verification workflow

Core verified findings

• EU-context carbon premium: -4.3% (SB mean 0.3405, MB mean 0.3558; N = 13,638,933)
• Directive 2014/24/EU staggered DiD estimate: -7.2 percentage points
• RDD at the EUR 139,000 threshold: +15.2% bidders and -0.33% carbon intensity
• Dead Zone carbon exposure: 3-6% of national Paris-aligned reductions

Code remains available at GitHub. See REPRODUCE.md and START_HERE.md for full instructions.