IPCC releases the AR6 Working Group I assessment on the physical science of climate change
Dated 9 August 2021: IPCC releases the AR6 Working Group I assessment on the physical science of climate change. In the causal graph this event weakens Climate crisis (civilizational warming bundle), a driver that strengthens Exposure to extreme temperature — an improving welfare path.
Who was responsible
Contribution type and responsibility level for each recorded actor — not sole-author shorthand.
No public contributors are listed for this fact.
What changed
Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.
- FactIPCC releases the AR6 Working Group I assessment on the physical science of climate change
- weakensDriverClimate crisis (civilizational warming bundle)
- strengthensIndicators (3)Exposure to extreme temperature
provisional weight · verified
Strengthens · 100% impact strength (driver → indicator)
Observed
11.7% of population · 11.7 above the normal line (2024)
Worse than normal7 readings, 2018–2024: rose from 5.66% of population to 11.7% of population.
Above normal = worse
Strengthens · 60% impact strength (driver → indicator)
Observed
32.9 micrograms per cubic metre (annual mean, population-weighted) · 27.9 above the normal line (2023)
Worse than normal3 readings, 2021–2023: fell from 33.2 micrograms per cubic metre (annual mean, population-weighted) to 32.9 micrograms per cubic metre (annual mean, population-weighted).
Above normal = worse
Strengthens · 50% impact strength (driver → indicator)
Observed
37.4 deaths per 1,000 live births · 12.4 above the normal line (2024)
Worse than normal7 readings, 2018–2024: fell from 40 deaths per 1,000 live births to 37.4 deaths per 1,000 live births.
Above normal = worse
Causal path
How this event connects to drivers and indicators in the graph.
- FactIPCC releases the AR6 Working Group I assessment on the physical science of climate change
- weakensDriverClimate crisis (civilizational warming bundle)
- strengthensIndicatorExposure to extreme temperature
Cite this page
Factrail. (2026). IPCC releases the AR6 Working Group I assessment on the physical science of climate change. Factrail. https://factrail.ai/facts/ipcc-ar6-working-group-i-released-2021
https://factrail.ai/facts/ipcc-ar6-working-group-i-released-2021
Accessed 16 October 2026.
By the Factrail desk · Method: how we source and score · Last reviewed
Dispute this factNamed here, or represent someone who is? Request a right of reply.