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  "id": "miami-chief-heat-officer",
  "title": "Miami-Dade's Chief Heat Officer and Extreme Heat Action Plan",
  "canonicalUrl": "https://1001smartcities.org/projects/miami-chief-heat-officer/"
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   "summary": "Created the first structured Evidence Passport with 9 claims and 9 source dossiers.",
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     "status": "completed",
     "outcome": "scaled-back",
     "evidenceGrade": "media",
     "timeline": {
      "started": 2021,
      "ended": 2025
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    "governance": {
     "operator": "Miami-Dade County Chief Heat Officer, Office of Resilience (since reorganised as the Office of Environmental Risk and Resilience), with the Climate and Heat Health Task Force",
     "actorTypes": [
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     "fundingModel": "mixed",
     "fundingDescription": "Adrienne Arsht-Rockefeller Foundation Resilience Center challenge grant, then county general fund and ARPA money",
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      "id": "clm-2fa0c1ae0a7ba4c7",
      "field": "snippet",
      "text": "In 2021 Miami-Dade County created what it and its funder both call the world's first Chief Heat Officer, seeded by an Adrienne Arsht-Rockefeller Foundation challenge grant",
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      "supportNote": "The county's own page states: 'In 2021, Miami-Dade County received a challenge grant offer from the Adrienne Arsht-Rockefeller Foundation Resilience Center to fast start an extreme heat initiative', leading to 'the world's first Chief Heat Officer (CHO)', responsible for 'improving coordination and accelerating existing heat protection efforts'.",
      "caveat": "Both the county and its funder make the 'first' claim; no independent verification of the precedence was found, which is why the entry attributes it to them rather than asserting it. As of July 2026 the county page still describes the role in the present tense although the post has ended — it is not a status source.",
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      "field": "snippet",
      "text": "The post produced a December 2022 Extreme Heat Action Plan",
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      "supportNote": "The funder dates the plan to December 2022 and gives its three objectives: cooling neighbourhoods through green solutions such as increasing the tree canopy, increasing access to efficient and affordable cooling in homes and emergency facilities, and increasing outreach and education. It names a 30 per cent tree-canopy goal and projects heat-index days at or above 100°F rising from close to 50 in 2023 to 91 by 2053.",
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     {
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      "field": "snippet",
      "text": "a May 1 to October 31 heat season with cooling sites in libraries and parks",
      "statementKind": "quantitative",
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      "supportNote": "The county names the season verbatim — 'Heat Season protocol during the period of chronic high heat and humidity from May 1- Oct. 31' — and directs residents to 'visit a cooling site near you'.",
      "caveat": "The page states no activation criteria: the cooling-site response is discretionary, not threshold-triggered. That distinction is what the entry's lesson turns on.",
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     {
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      "field": "snippet",
      "text": "a National Weather Service pilot that lowered the county's heat-advisory threshold from a heat index of 108°F to 105°F for two hours",
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      "mappingStatus": "mapped",
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      "supportNote": "From June 1 the Heat Advisory threshold for Miami-Dade fell from a heat index of 108°F or higher for at least two hours to 105°F or higher for at least two hours, in a pilot run with the county and justified by local health data. Miami-Dade was the only area in the country given this pilot.",
      "caveat": "Direct fetch returned an error during review; the text was confirmed via the search index and by the sibling Broward criteria page, which shows the criteria were later extended.",
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       "note": "The passport copies the published claim and its recorded source mapping without adding a conclusion."
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      "field": "snippet",
      "text": "Florida's HB 433 then barred counties from requiring heat protection for outdoor workers",
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      "supportNote": "The law 'Prevents city and county governments from requiring that employers, including government contractors, provide heat protections for outdoor workers outside of those required under state or federal law', effective 1 July 2024 — and the direct local consequence: 'County commissioners in Miami-Dade withdrew their pending proposal to provide heat protections standards to outdoor workers in the county.'",
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     {
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      "field": "snippet",
      "text": "the county cut the officer post to help close a $400M budget gap",
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      "supportNote": "The independent review states it directly: 'Miami-Dade County, which eliminated its Chief Heat Officer position as a part of an effort to close a $400 million funding gap that emerged in part as ARPA funds were exhausted.'",
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      "field": "snippet",
      "text": "The heat season still runs; nobody holds the title",
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      "supportNote": "A June 2026 currency check shows the season protocol operating without an officer — a heat advisory in effect, a heat index of 105 to 110 degrees, and the Homeless Trust distributing water and directing unhoused people to cooling centres. Governing confirms the departure: 'Late last year, Gilbert left Miami-Dade to become chief heat ambassador with the Atlantic Council's Climate Resilience Center'.",
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      "field": "impact",
      "text": "Governing reported in 2026 that the plan's work included 1,700 air-conditioning units installed in public housing, hundreds of new shaded bus shelters and tens of thousands of trees planted, concentrated in low-income neighbourhoods",
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      "supportNote": "The report carries the delivery figures: 'The county installed 1,700 air conditioning units in public housing', 'Tens of thousands of trees are being planted, particularly in low-income neighborhoods', and 'Hundreds of new bus shelters give transit riders a place to get out of the sun'.",
      "caveat": "County-reported figures relayed by the press; no independent evaluation of the office or the plan was found. The same report cites research putting the county's true annual heat toll around 600 deaths, a contested figure the entry deliberately does not use because the same excess-mortality work produced both 34 and more than 600 depending on method.",
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      "text": "Miami-Dade lowered the temperature at which an alert fires, then the state removed its power to attach any obligation to that alert, and then the budget removed the post that had argued for both",
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      "supportNote": "Three documented steps in sequence: the advisory threshold fell to a heat index of 105°F for two hours in a pilot unique to the county; HB 433 then barred city and county governments from requiring heat protections beyond state or federal law, and Miami-Dade withdrew its pending proposal; and the Chief Heat Officer post was eliminated to help close a $400 million gap.",
      "caveat": "The causal reading that joins the three is the entry's own argument. None of the sources states that the budget cut followed from the preemption.",
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      "id": "src-7bed012c9f9dd879",
      "title": "Miami-Dade County — Chief Heat Officer (authority)",
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       "value": "Operator source for origin and title: 'In 2021, Miami-Dade County received a challenge grant offer from the Adrienne Arsht-Rockefeller Foundation Resilience Center to fast start an extreme heat initiative', leading to 'the world's first Chief Heat Officer (CHO)'; the CHO is 'responsible for improving coordination and accelerating existing heat protection efforts'. Caution: as of July 2026 this page still describes the role in the present tense, although the post has ended — do not read it as a status source.",
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       "value": "The named season, verbatim: 'Heat Season protocol during the period of chronic high heat and humidity from May 1- Oct. 31'. Directs residents to 'visit a cooling site near you' but states no activation criteria — the cooling-site response is discretionary, not threshold-triggered. Also links county story maps on heat exposure and vulnerability, which did not render for review and are therefore not relied on here.",
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       "value": "The one place a measured value has an automatic consequence: from June 1 the Heat Advisory threshold for Miami-Dade fell from a heat index of 108°F or higher for at least 2 hours to 105°F or higher for at least 2 hours, in a pilot run with the county and justified by local health data; Miami-Dade was the only area in the country given this pilot. Direct fetch returned 404 during review; text confirmed via the search index and by the sibling page HeatCriteriaChangeBroward2024, which shows the criteria were later extended.",
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      "title": "Arsht-Rock / Climate Resilience Center — Miami's Extreme Heat Action Plan (funder)",
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       "value": "Dates the plan to December 2022 and gives its three objectives: cool neighbourhoods through green solutions such as increasing the tree canopy, increase access to efficient and affordable cooling in homes and emergency facilities, and increase outreach and education. Names a 30 percent tree-canopy goal and projects heat-index days at or above 100°F rising from close to 50 in 2023 to 91 by 2053. Funder source, not independent.",
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      "title": "KFF — Florida's heat-protection preemption law (independent policy research)",
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       "value": "The hard legal limit, verbatim: HB 433 'Prevents city and county governments from requiring that employers, including government contractors, provide heat protections for outdoor workers outside of those required under state or federal law', effective July 1, 2024. And the direct local consequence: 'County commissioners in Miami-Dade withdrew their pending proposal to provide heat protections standards to outdoor workers in the county.'",
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      "title": "Federation of American Scientists — Summer, Wrapped: The 2025 'State of the Heat' (independent)",
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       "value": "The status-changing sentence, verbatim: 'Miami-Dade County, which eliminated its Chief Heat Officer position as a part of an effort to close a $400 million funding gap that emerged in part as ARPA funds were exhausted.'",
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      "title": "Governing — Protecting Miami From Extreme Heat (press, 2026)",
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       "type": "descriptive-source-note",
       "value": "Confirms the departure — 'Late last year, Gilbert left Miami-Dade to become chief heat ambassador with the Atlantic Council's Climate Resilience Center' — and carries the delivery figures: 'The county installed 1,700 air conditioning units in public housing', 'Tens of thousands of trees are being planted, particularly in low-income neighborhoods', 'Hundreds of new bus shelters give transit riders a place to get out of the sun'. Also reports research putting the county's true annual heat toll around 600 deaths, far above the recorded count — that figure is contested and is not used in this entry, because the same excess-mortality work produced both 34 and more than 600 depending on method.",
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      "title": "Miami-Dade County — Climate and Heat Health Task Force (authority)",
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       "type": "descriptive-source-note",
       "value": "The governance layer around the post: the task force was to 'prioritize short-term actions, create a framework for prioritizing future actions and for monitoring progress, and recommend staffing', across four objectives — employer and public heat education, emergency-management and healthcare capacity, affordable efficient air-conditioning through weatherization, and heat in streetscape and parks design. Recommendations only; no mandatory instrument.",
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      "title": "CBS Miami — heat advisory, 18 June 2026 (press)",
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       "type": "descriptive-source-note",
       "value": "Currency check: the season protocol still operates without an officer. 'With a heat advisory in effect for most of the day', 'heat index reaches 105 to 110 degrees', and the Miami-Dade Homeless Trust distributing water and directing unhoused people to cooling centres.",
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       "value": "Confirms the departure — 'Late last year, Gilbert left Miami-Dade to become chief heat ambassador with the Atlantic Council's Climate Resilience Center' — and carries the delivery figures: 'The county installed 1,700 air conditioning units in public housing', 'Tens of thousands of trees are being planted, particularly in low-income neighborhoods', 'Hundreds of new bus shelters give transit riders a place to get out of the sun'. Also reports research putting the county's true annual heat toll around 600 deaths, far above the recorded count — that figure is contested and is not used in this entry, because the same excess-mortality work produced both 34 and more than 600 depending on method.",
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      "text": "a May 1 to October 31 heat season with cooling sites in libraries and parks",
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      "text": "Florida's HB 433 then barred counties from requiring heat protection for outdoor workers",
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      "text": "Governing reported in 2026 that the plan's work included 1,700 air-conditioning units installed in public housing, hundreds of new shaded bus shelters and tens of thousands of trees planted, concentrated in low-income neighbourhoods",
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      "title": "KFF — Florida's heat-protection preemption law (independent policy research)",
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       "value": "The hard legal limit, verbatim: HB 433 'Prevents city and county governments from requiring that employers, including government contractors, provide heat protections for outdoor workers outside of those required under state or federal law', effective July 1, 2024. And the direct local consequence: 'County commissioners in Miami-Dade withdrew their pending proposal to provide heat protections standards to outdoor workers in the county.'",
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      "title": "Governing — Protecting Miami From Extreme Heat (press, 2026)",
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       "value": "Confirms the departure — 'Late last year, Gilbert left Miami-Dade to become chief heat ambassador with the Atlantic Council's Climate Resilience Center' — and carries the delivery figures: 'The county installed 1,700 air conditioning units in public housing', 'Tens of thousands of trees are being planted, particularly in low-income neighborhoods', 'Hundreds of new bus shelters give transit riders a place to get out of the sun'. Also reports research putting the county's true annual heat toll around 600 deaths, far above the recorded count — that figure is contested and is not used in this entry, because the same excess-mortality work produced both 34 and more than 600 depending on method.",
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      "title": "CBS Miami — heat advisory, 18 June 2026 (press)",
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       "retrievedAt": null,
       "status": "publication-and-record-dates-recorded"
      },
      "locator": {
       "type": "descriptive-source-note",
       "value": "Currency check: the season protocol still operates without an officer. 'With a heat advisory in effect for most of the day', 'heat index reaches 105 to 110 degrees', and the Miami-Dade Homeless Trust distributing water and directing unhoused people to cooling centres.",
       "exact": false
      },
      "preservation": {
       "archiveUrl": null,
       "archivedAt": null,
       "contentHash": null,
       "status": "not-captured"
      }
     }
    ],
    "coverage": {
     "claimsTotal": 9,
     "claimsMapped": 9,
     "sourcesTotal": 9,
     "sourcesUsedByClaims": 8,
     "sourcesWithPublicationDate": 5,
     "sourcesWithArchive": 0,
     "sourcesWithExactLocator": 0,
     "sourcesWithContentHash": 0
    },
    "limits": [
     "Publisher names and source languages have not yet been classified; domains are recorded without guessing.",
     "Existing source notes are descriptive locators, not page- or paragraph-exact citations.",
     "A missing archive, publication date or content hash is shown as null rather than inferred.",
     "The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim."
    ]
   }
  }
 ]
}