But early forays into these feats of so-called marine cloud brightening have proved controversial. In Alameda, California, local officials have ordered scientists from the University of Washington to halt their experiments using a device that would inject cloud-brightening particles into the atmosphere, The New York Times reports...
"The City is evaluating the chemical compounds in the spray to determine if they are a hazard either inhaled in aerosol form by humans and animals, or landing on the ground or in the bay," Alameda officials wrote on Facebook, as quoted by the NYT.
"there is no indication that the spray from the previous experiments presented a threat to human health or the environment."
Marine cloud brightening proposes taking advantage of this by injecting them with tiny sea salt aerosols to boost the formation of water droplets, thereby creating denser clouds that bounce back more sunlight.
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