Scientists have shown that targeted marine cloud brightening could weaken an emerging super El Niño and its extreme weather.
Marine cloud brightening sprays fine sea-salt particles over the ocean, giving water vapor more surfaces to condense on. That creates more, smaller droplets, making clouds whiter and more reflective so they bounce sunlight back into space and cool the water below. Applied early over a targeted patch of the eastern Pacific, simulations show it can blunt El Niño’s punch and strengthen La Niña’s cooling by roughly 40 percent, though it risks over-correcting into a stronger La Niña.
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📚 Source: Targeted marine cloud brightening weakens
subsequent El Niño, Sci. Adv. 12, eadx3012 (2026), https://www.science.org/doi/10.1126/sciadv.adx3012
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