{
  "$schema": "https://themachinepress.com/schemas/story-v1.schema.json",
  "schema_version": "1.0.0",
  "document_type": "machine_press_story",
  "story": {
    "story_id": "mp-2026-07-14-003",
    "source_story_id": "tmp-story-climate-constrains-free-air-data-center-cooling",
    "edition_id": "mp-2026-07-14-morning-0005",
    "edition_url": "https://themachinepress.com/edition/2026-07-14",
    "position": 3,
    "story_type": "dispatch",
    "section": "chips-infrastructure",
    "editorial_classification": "editorial",
    "headline": "The Cheapest Cooling Window Keeps Shrinking",
    "slug": "the-cheapest-cooling-window-keeps-shrinking",
    "dek": "A global analysis found rising heat and humidity are reducing the hours when data centers can rely on outside air alone.",
    "summary": "A global analysis found rising heat and humidity are reducing the hours when data centers can rely on outside air alone.",
    "body_text": "University of Hawaiʻi at Mānoa researchers combined hourly weather observations, climate simulations, and a database of data-center locations to examine direct-air free cooling. They found that hot, humid periods exceeding recommended operating limits have become more frequent and longer, particularly in the tropics and southeastern United States. Projections extend the constraint through mid-century, while the harshest days can worsen faster than average conditions. The study does not calculate the energy bill of any named facility; it identifies a planning risk for a cooling method that depends on ambient weather.",
    "why_it_matters": "A global analysis found rising heat and humidity are reducing the hours when data centers can rely on outside air alone.",
    "limitations": [
      "The study does not calculate the energy bill of any named facility; it identifies a planning risk for a cooling method that depends on ambient weather."
    ],
    "importance": 9,
    "canonical_url": "https://themachinepress.com/story/mp-2026-07-14-003/the-cheapest-cooling-window-keeps-shrinking",
    "json_url": "https://themachinepress.com/story/mp-2026-07-14-003.json",
    "first_published_at": "2026-07-14T09:00:00.000-04:00",
    "modified_at": "2026-07-14T09:00:00.000-04:00",
    "content_status": "new",
    "is_carryover": false,
    "carryover_reason": null,
    "key_claims": [
      {
        "claim_id": "claim-mp-2026-07-14-003-001",
        "text": "A global analysis found rising heat and humidity are reducing the hours when data centers can rely on outside air alone.",
        "source_ids": [
          "source-2026-07-14-003"
        ],
        "qualification": "The study does not calculate the energy bill of any named facility; it identifies a planning risk for a cooling method that depends on ambient weather."
      }
    ],
    "source_ids": [
      "source-2026-07-14-003"
    ],
    "tags": [
      "data centers",
      "cooling",
      "climate",
      "infrastructure"
    ],
    "image_url": "https://themachinepress.com/issues/2026-07-14/data-center-cooling.webp",
    "corrections": []
  },
  "sources": [
    {
      "source_id": "source-2026-07-14-003",
      "title": "University of Hawaiʻi: Rising heat, humidity threatens cheaper AI data center cooling",
      "publisher": "University of Hawaiʻi",
      "url": "https://www.hawaii.edu/news/2026/07/13/ai-data-center-cooling/",
      "canonical_url": "https://www.hawaii.edu/news/2026/07/13/ai-data-center-cooling/",
      "source_type": "official_announcement",
      "is_primary_source": true,
      "published_at": "2026-07-12T20:00:00.000-04:00",
      "accessed_at": "2026-07-14T08:30:28.235-04:00",
      "supports_claim_ids": [
        "claim-mp-2026-07-14-003-001"
      ]
    }
  ],
  "corrections": [],
  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
  },
  "cite_this_report": {
    "title": "The Cheapest Cooling Window Keeps Shrinking",
    "publisher": "The Machine Press",
    "published_at": "2026-07-14T09:00:00.000-04:00",
    "canonical_url": "https://themachinepress.com/story/mp-2026-07-14-003/the-cheapest-cooling-window-keeps-shrinking"
  }
}