Anonymized Replication Package for "When Does Spatial Smoothing Help or Hurt Aggregate Prediction?"

This anonymized replication package supports the manuscript "When Does Spatial Smoothing Help or Hurt Aggregate Prediction? Mechanism Decomposition and Bandwidth Guidelines for Point-to-Area Estimation," submitted for double-anonymous peer review.

The package contains the synthetic simulation engine, scenario configurations, scripts for Components A-D, code for the EPA PM2.5 and King County consistency checks, processed public-data inputs where redistribution is permitted, figure and table generation scripts, environment files, and README documentation for reproducing the main manuscript and supplementary analyses.

External public data sources are documented in the README and in the manuscript's Data Availability Statement. The record is anonymized for peer review. Upon acceptance, the metadata will be updated with the full author information, and the public archival record will be finalized.