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Stratospheric aerosol injection (SAI) is a proposed method of solar geoengineering (or solar radiation modification) to reduce global warming. This would introduce aerosols into the stratosphere to create a cooling effect via global dimming and increased albedo , which occurs naturally from volcanic winter . [ 1 ]
There is a risk that countries may start using SRM without proper precaution or research. SRM, at least by stratospheric aerosol injection, appears to have low direct implementation costs relative to its potential impact, and many countries have the financial and technical resources to undertake SRM. [6]
Enhancing the solar reflectance and thermal emissivity of Earth in the atmospheric window through passive daytime radiative cooling has been proposed as an alternative or "third approach" to climate engineering [26] [50] that is "less intrusive" and more predictable or reversible than stratospheric aerosol injection. [51
While these methods were less intrusive and less potentially damaging than stratospheric aerosol injection, they could prove more expensive and too energy-intensive, said Benjamin Sovacool ...
But the method that gets the most attention is called stratospheric aerosol injection. "There's a part of the atmosphere, maybe twice as high as a regular aircraft flies, where particles last for ...
The term refers to activities like stratospheric aerosol injections, an untested theory that the planet could be cooled by spraying particles into the stratosphere from high-altitude aircraft.
Caldeira and Wood analyzed the effect of climate engineering in the Arctic using stratospheric sulfate aerosols. [12] He found that the Earth's average temperature change per unit albedo is unaffected by latitude because climate system feedbacks have a stronger presence in areas of high latitude; where less sunlight is reflected. [12]
Giant sun shades, 40-foot-tall air filters, stratospheric sulfur injections: Here are some of the wild and wondrous ways we might save the planet. New scientific interventions are here to fight ...