Scripps Proposes Cloud Seeding to Cut El Nino Strength by 40 Percent

Geoengineering Pacific marine layers with sea salt could blunt a historic warming event, but the tool remains unproven and the timeline is unforgiving.

A new study from Scripps Institution of Oceanography proposes a targeted geoengineering intervention, marine cloud brightening, to reflect sunlight away from the Pacific and weaken the developing El Nino by more than 40 percent [1]. The concept involves spraying fine sea salt particles into the lower atmosphere to seed marine clouds, increasing their reflectivity and cooling the ocean surface below [2]. It is a hardware solution for a planetary thermal problem, though the hardware remains entirely experimental.

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