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by viczsaszbo
1398 days ago
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A study was done on alumina in the atmosphere and 5,000 tons/yr doesn't seem dangerous. The study notes that because of the 3.8 g cm−3 density it falls quickly compared to other particles. The density is much higher than the chlorofluorocarbons that stick around and damage the ozone layer. It assumes ~4,000,000 tons/year that causes 3.7% ozone depletion. 5,000 tons/year might have effects, but it doesn't look like a show stopper in terms of cooling and ozone depletion. Hard to draw firm conclusion since they studied a purposeful geoengineering plan, but it doesn't add up with a sanity check. https://acp.copernicus.org/articles/15/11835/2015/acp-15-118... |
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