Anthropogenic visibility impairment

{
  "id": "MLC-T-ENV-001795",
  "term": "Anthropogenic visibility impairment",
  "field": "Environment",
  "term_source": "Anthropogenic Visibility Impairment",
  "definition": "Any humanly perceptible difference due to air pollution from anthropogenic sources between actual visibility and natural visibility on one or more days. Because natural visibility can only be estimated or inferred, visibility impairment also is estimated or inferred rather than directly measured.",
  "subject": "Outcomes",
  "references": [
    "40 CFR 51.301 (CFR 2017)"
  ],
  "url": "https://mlchart.com/terminology/environment/anthropogenic-visibility-impairment/"
}