Editing Wildfire smoke PM2.5 concentration (section)

== Aggregation Semantics ==
Geographic aggregation involves summarizing wildfire smoke PM2.5 concentrations over specified spatial units, which may range from local monitoring sites to regional or national scales, depending on data availability and analysis objectives. Temporal aggregation is performed as an annual mean, averaging concentration values over a full calendar year to capture long-term exposure trends.

Cross-signal aggregation can integrate wildfire smoke PM2.5 data with related environmental signals such as total ambient PM2.5 concentration, burned area metrics, and health burden indicators. This facilitates multi-dimensional assessments linking emissions, exposure, and outcomes. Aggregation methods emphasize consistent spatial and temporal boundaries to maintain comparability and interpretability.