Global temperatures experienced a negative anomaly between 1950 and 1980 due to aerosol masking

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.

Global temperatures experienced a pronounced slowdown or negative anomaly between 1950 and 1980, which multiple lines of research attribute to aerosol masking and global dimming offsetting greenhouse gas warming.

The analysis

The retrieved papers consistently support the claim that anthropogenic aerosol forcing and related reductions in surface solar radiation (global dimming) contributed to a negative temperature anomaly or a leveling off of global and regional temperatures from the 1940s/1950s through the 1970s.

Evidence for · 4

Contribution of solar radiation to decadal temperature variability over land.

Recorded source metadata

Wang K, Dickinson RE. Contribution of solar radiation to decadal temperature variability over land.. 2013. https://doi.org/10.1073/pnas.1311433110

Paper [1] notes a substantial decrease in surface solar radiation from the 1940s to the 1970s that caused significant cooling, accounting in part for near-constant global temperatures during that period.

Source citation format

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More for · 3

Contributions of Anthropogenic Aerosol Forcing and Multidecadal Internal Variability to Mid‐20th Century Arctic Cooling—CMIP6/DAMIP Multimodel Analysis

Recorded source metadata

Takuro Aizawa, Naga Oshima, Seiji Yukimoto. Contributions of Anthropogenic Aerosol Forcing and Multidecadal Internal Variability to Mid‐20th Century Arctic Cooling—CMIP6/DAMIP Multimodel Analysis. 2022. https://doi.org/10.1029/2021gl097093

Paper [2] uses CMIP6 multimodel analyses to demonstrate that anthropogenic aerosol forcings contributed significantly to mid-20th-century surface cooling.

Source citation format

Global warming 2007. An update to global warming: the balance of evidence and its policy implications.

Recorded source metadata

Keller CF. Global warming 2007. An update to global warming: the balance of evidence and its policy implications.. 2007. https://doi.org/10.1100/tsw.2007.91

Paper [4] discusses how global dimming driven by aerosol scattering of sunlight helps explain the suppressed warming observed during the mid-20th century.

Source citation format

The missing climate forcing

Recorded source metadata

J. Hansen, M. Sato, A. Lacis, R. Ruedy. The missing climate forcing. Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences. 1997. https://doi.org/10.1098/rstb.1997.0018

Paper [7] argues that aerosol effects produced a large negative forcing that substantially offset greenhouse warming during the mid-to-late 20th century.

Source citation format

The paper trail · every fact has a biography

first checked02 Aug 2026

judged → SUPPORTED · 8302 Aug 2026

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