ArticleProceedings of the National Academy of Sciences of the United States of America2024
Atmosphere teleconnections from abatement of China aerosol emissions exacerbate Northeast Pacific warm blob events.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Projected intensification of precipitation extremes in the Kosi Basin using CMIP6 models.Scientific reports · 2026Article
- Reply to Yu et al.: Atmospheric circulation changes are more important in shaping the aerosol-induced Northeast Pacific warming pattern.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Less anthropogenic aerosol indirect effects are a potential cause for Northeast Pacific warm blob events.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Atmosphere teleconnections from abatement of China aerosol emissions exacerbate Northeast Pacific warm blob events.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
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12 authors.
Funding
Abstract
During 2010 to 2020, Northeast Pacific (NEP) sea surface temperature (SST) experienced the warmest decade ever recorded, manifested in several extreme marine heatwaves, referred to as "warm blob" events, which severely affect marine ecosystems and extreme weather along the west coast of North America. While year-to-year internal climate variability has been suggested as a cause of individual events, the causes of the continuous dramatic NEP SST warming remain elusive. Here, we show that other than the greenhouse gas (GHG) forcing, rapid aerosol abatement in China over the period likely plays an important role. Anomalous tropospheric warming induced by declining aerosols in China generated atmospheric teleconnections from East Asia to the NEP, featuring an intensified and southward-shifted Aleutian Low. The associated atmospheric circulation anomaly weakens the climatological westerlies in the NEP and warms the SST there by suppressing the evaporative cooling. The aerosol-induced mean warming of the NEP SST, along with internal climate variability and the GHG-induced warming, made the warm blob events more frequent and intense during 2010 to 2020. As anthropogenic aerosol emissions continue to decrease, there is likely to be an increase in NEP warm blob events, disproportionately large beyond the direct radiative effects.
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