Space and astronomy news
is just around the corner, and it has astronomy fans and weather aficionados alike preparing for an incredible show. But it’s not just fun and games. Eclipses are rare opportunities for scientists to study phenomena that only come around once in a while.describing how eclipses can disrupt the formation of certain types of clouds. Their findings have implications for futuristic geoengineering schemes that propose to artificially block sunlight to combat climate change.
Proposals to reduce climate change by artificially blocking the Sun work on a similar principle to an eclipse. A swarm ofinto the atmosphere, could reduce the amount of solar energy reaching the surface of the Earth, cooling the temperature back to historical norms. For a project like this to work, about 3.5% to 5% of sunlight would have to be blocked.
The decrease in cloud cover would also have an effect on precipitation – fewer clouds means less rain – which might result in regional increases in drought and desertification. Atmospheric aerosol injection might seem like a more uniform method of blocking sunlight, but large-scale weather patterns actually make these methods potentially even more variable, blocking up to 45% of sunlight locally on occasion .
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