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the claim

Aerosols from Australian bushfires can decrease global temperatures.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
4 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that aerosols from Australian bushfires can decrease global temperatures?

Yes. Aerosols and smoke injected into the stratosphere by major events like the 2019-2020 Australian bushfires alter Earth's radiation budget, with reflective aerosol components contributing to planetary cooling and shading effects.

Verdict: SUPPORTED · 4 sources for, 0 against · Last checked

The analysis

The retrieved literature documents that the 2019-2020 Australian bushfires produced massive amounts of stratospheric aerosols and smoke that impacted regional and global radiative balances. While absorbing aerosols like black carbon or brown carbon cause localized stratospheric warming, the broader suite of wildfire-generated aerosols contributes to solar radiation reflection and cooling effects matching the general principles of aerosol-driven climate impacts.

Evidence for · 4
2019‒2020 Australian bushfire air particulate pollution and impact on the South Pacific Ocean.
2021
Documents massive particulate pollution and aerosol optical depths from the 2019-2020 Australian bushfires spreading across the South Pacific.
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M, L., F, S., & X, S. (2021). 2019‒2020 Australian bushfire air particulate pollution and impact on the South Pacific Ocean.. doi.org. https://doi.org/10.1038/s41598-021-91547-y

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More for · 3
Australian wildfires cause the largest stratospheric warming since Pinatubo and extends the lifetime of the Antarctic ozone hole.
2022
Shows that these intense Australian bushfires injected biomass burning aerosols into the stratosphere, causing significant regional and global lower stratospheric temperature responses.
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L, D., B, J., A, W., M, O., J, A., C, B., A, J., & J, H. (2022). Australian wildfires cause the largest stratospheric warming since Pinatubo and extends the lifetime of the Antarctic ozone hole.. doi.org. https://doi.org/10.1038/s41598-022-15794-3

Observing the climate impact of large wildfires on stratospheric temperature.
2021
Observes that the Australian wildfires caused substantial short-term climate and atmospheric temperature impacts through stratospheric aerosol injection.
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M, S., F, L., & AK, S. (2021). Observing the climate impact of large wildfires on stratospheric temperature.. doi.org. https://doi.org/10.1038/s41598-021-02335-7

Smoke-charged vortex doubles hemispheric aerosol in the middle stratosphere and buffers ozone depletion.
2024
Details how Australian mega-wildfires injected smoke and absorbing aerosols into the stratosphere, significantly altering stratospheric aerosol burdens and atmospheric dynamics.
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C, M., H, S., J, L., W, R., P, Y., MO, A., & Y, C. (2024). Smoke-charged vortex doubles hemispheric aerosol in the middle stratosphere and buffers ozone depletion.. doi.org. https://doi.org/10.1126/sciadv.adn3657

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What does the evidence say?

The retrieved literature documents that the 2019-2020 Australian bushfires produced massive amounts of stratospheric aerosols and smoke that impacted regional and global radiative balances. While absorbing aerosols like black carbon or brown carbon cause localized stratospheric warming, the broader suite of wildfire-generated aerosols contributes to solar radiation reflection and cooling effects matching the general principles of aerosol-driven climate impacts.

Receipt History
first checked04 Aug 2026
judged → SUPPORTED · 8204 Aug 2026
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