Geoengineering to combat global warming by injecting sulfate particles into the atmosphere can't fully offset human-caused climate change, U.S. scientists say.
Researchers at the University of Washington say that suggested method would likely achieve only part of the desired effect and could carry serious, if unintended, consequences.
Tiny sulfate and sea salt particles, called aerosols, are naturally present in the lower atmosphere and reflect energy from the sun into space.
Some researchers have suggested injecting sulfate particles directly into the stratosphere to enhance the effect.
However, a UW modeling study shows sulfate particles in the stratosphere will not necessarily offset all the effects of future increases in atmospheric carbon dioxide.
Significant changes would still occur because even increased aerosol levels cannot balance changes in atmospheric and oceanic circulation brought on by higher levels of ...