Product methodology
Climate & Air Archive
Source contract, normalization path, entity-graph join, refresh posture, and publication limits for this Branmoor product.
Status
Pending. This product is pending. The methodology page is published first so the source contract and join path are visible before Branmoor represents the product as live.
Distribution Scope
Nationwide; TN stations; Nashville monitor history
Product Question
Captures climate normals, daily readings, and air-quality baselines.
Primary Sources
- NOAA CDO/NCEI — Primary-source input for the pending product methodology
- EPA AQS/AirNow. — Primary-source input for the pending product methodology
Entity-Graph Join
station ID, AQS site ID, `census_tract_geoid`, county.
Publication Rule
Branmoor does not treat raw public records as the product. A surface is publishable only when the source record is dated, normalized, source-linked, and joined to the relevant Branmoor entity identifiers with enough confidence to state the limits of the result.
Current Methodology Note
Pending methodology. Source contract: NOAA CDO/NCEI; EPA AQS/AirNow. Records will be normalized into the Branmoor entity graph. Join path: station ID, AQS site ID, `census_tract_geoid`, county. The public preview will publish only after Branmoor can state source cadence, lineage, and coverage limits.
Limits
Coverage follows the underlying source. Missing state portals, gated APIs, PDF-only filings, suppressed fields, lagged agency refreshes, and entity-name ambiguity can all limit product completeness. Pending products are not marketed as live until those limits are documented on the product surface.