Could solar geoengineering cool the planet? U.S. gets serious about finding out

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https://www.science.org/content/article/could-solar-geoengineering-cool-planet-u-s-gets-serious-about-finding-out

By Paul Voosen, Science. 

Excerpt: Any work on solar geoengineering—the notion of artificially making the atmosphere more reflective to cool an overheated planet—is fraught with controversy. ...The U.S. National Oceanic and Atmospheric Administration (NOAA) is venturing ...to understand the types, amounts, and behavior of particles naturally present in the stratosphere. ...Research on solar geoengineering—also called solar radiation management—has long been anathema to some climate scientists and activists. They fear it could distract from emissions cuts, could have unforeseen risks, and would not address some impacts of rising carbon dioxide, including ocean acidification. Federal agencies have largely steered clear of the work, even after a report from the National Academies of Sciences, Engineering, and Medicine (NASEM) in 2021 recommended a $200 million research program. ...They want to study how such ­sulfur interacts with organic particles such as soot and the dust of meteorites. Rosenlof says they will also study how soot absorbs the Sun’s heat, causing air parcels to rise and prolonging particle lifetimes in the stratosphere....

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