… Climate scientists at UC Santa Barbara analyzed two approaches that involve reducing the amount of sunlight warming Earth’s surface: cloud seeding over the eastern Pacific and introducing aerosols into the stratosphere. By modeling local effects on the Pacific Ocean, they found that the first strategy would completely disrupt one of the planet’s major climate cycles, the El Niño Southern Oscillation. At the same time, the second would scarcely affect the system at all. The results, published in the journal Earth’s Future, underscore the importance of considering the broad range of consequences that any geoengineering solution may have.