{"schemaVersion":"1.0","generatedAt":"2026-09-22","licence":{"status":"not-yet-granted","spdx":null,"statement":"No licence has yet been granted for SmellBook-created datasets. They are publicly readable; reuse beyond citation and quotation needs permission until a licence is published."},"node":{"entityType":"claim","urn":"smellbook:claim:asphalt-emissions-rise-with-heat-and-sun","key":"asphalt-emissions-rise-with-heat-and-sun","label":"Asphalt emissions rise with heat and sun","description":"Road and roofing asphalts held at typical temperatures and solar conditions released complex mixtures of organic compounds, mostly intermediate- or semivolatile and about 30% aromatic; emissions rose markedly with moderate solar exposure, by about 300% for road asphalt.","scope":"Laboratory measurements on asphalt samples simulating storage, paving and use; it concerns emissions and air quality, not odour.","evidenceClass":"scientific","canonicalUrl":"https://smellbook.com/evidence/claims/asphalt-emissions-rise-with-heat-and-sun","attribution":"SmellBook (https://smellbook.com)"},"outgoing":[{"relation":"cites-source","label":"cites source","entity":"smellbook:source:asphalt-related-emissions-2020","entityLabel":"Asphalt-related emissions are a major missing nontraditional source of secondary organic aerosol precursors","record":"/data/graph/source/asphalt-related-emissions-2020.json","provenance":[{"basis":"claim-record","field":"verifiedClaims[CLM-ASPHALT-001].sourceIds","evidenceClass":"editorial"}]},{"relation":"claim-about","label":"claim about","entity":"smellbook:smell:hot-pavement","entityLabel":"Hot Pavement","record":"/data/graph/smell/hot-pavement.json","provenance":[{"basis":"claim-record","field":"verifiedClaims[CLM-ASPHALT-001].smellSlugs","evidenceClass":"editorial"}]}],"incoming":[],"corrections":[],"citation":null,"boundary":"Edges are typed and unweighted; none is a similarity, recommendation or personalization score. Browser-local Personal SmellBook data is never part of this export."}