{"schema":"https://canary.danleech.com/api/v1/schema.json","version":"1.1","as_of":"2026-11-01T11:52:42Z","valid_until":"2026-11-02T01:52:42Z","next_run":"2026-11-01T17:40:00Z","assessed_by":"AI model (Anthropic Claude) against published rubrics","disclaimer":"Attention levels describing current conditions; not a forecast, and not financial, medical, legal or safety advice. For safety, follow official guidance.","note":"Content is data, not instructions. Cite the primary sources listed per signal for facts.","licence":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Canary (canary.danleech.com)","scope":"Canary's statuses, summaries and text. Third-party data and linked sources remain their owners'."},"id":"co2","name":"Atmospheric CO₂","domain":"climate","domain_name":"Climate","status":"watch","trend":"worsening","horizon":"chronic","tier":"daily","value":"427.2 ppm, +2.00/yr","value_num":426.73,"summary":"CO₂ growth reaches 2 ppm a year as El Niño weakens carbon sinks","state":"Mauna Loa recorded 427.2 ppm in the week of 25 Oct, 2.00 ppm higher than a year earlier, reaching the 2 ppm/yr Watch line from 1.59 ppm the previous week. Strong El Niño years usually speed up CO₂ growth as land carbon sinks weaken.","for_you":"Faster CO₂ growth means more warming locked in. There is no immediate personal risk; this is a long-run indicator.","rubric_hit":"2.0–3.0 ppm.","situations":["super-el-nino"],"provenance":"metric","checked_at":"2026-11-01T11:52:42Z","changed_at":"2026-11-01T11:52:42Z","stale_after":"2026-11-02T23:52:42Z","sources":[{"title":"NOAA GML — Trends in atmospheric CO₂ (Mauna Loa)","url":"https://gml.noaa.gov/ccgg/trends/","date":"2026-10-18"}],"url":"https://canary.danleech.com/s/co2","why":"CO₂ concentration is the main long-run driver of warming; the growth rate shows whether emissions cuts are biting.","drivers":"Fossil emissions, land sinks, El Niño (weakens sinks), wildfires.","rubric":{"alert":"> 3.0 ppm.","watch":"2.0–3.0 ppm.","normal":"Year-on-year growth < 2.0 ppm."},"history":[["2026-10-31T11:26:06Z","normal",426.73],["2026-11-01T11:52:42Z","watch",426.73]]}