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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 ]
Among the multiple potential approaches, stratospheric aerosol injection (SAI) is the most-studied [1]: 350 , followed by marine cloud brightening (MCB). SRM could be a supplement to climate change mitigation measures, [2] but would not be a substitute for reducing greenhouse gas emissions. SRM is commonly about using atmospheric methods but ...
Although there's a popular narrative that stratospheric aerosol injection can be carried out by individuals, small states, or other non-state rogue actors, scientific estimates suggest that cooling the atmosphere by 1 °C (1.8 °F) through stratospheric aerosol injection would cost at least $18 billion annually (at 2020 USD value), meaning that ...
Volcanic aerosols from huge volcanoes (VEI>=5) directly reduce global mean sea surface temperature (SST) by approximately 0.2-0.3 °C, [1] [3] milder than global total surface temperature drop, which is ~0.3 to 0.5 °C, [4] [5] [6] according to both global temperature records and model simulations. It usually takes several years to be back to ...
Among the multiple potential approaches, stratospheric aerosol injection (SAI) is the most-studied [45]: 350 , followed by marine cloud brightening (MCB). SRM could be a supplement to climate change mitigation measures, [ 46 ] but would not be a substitute for reducing greenhouse gas emissions .
Stratospheric injection of aerosols by volcanoes is a major cause of short-term climate change. A common occurrence in explosive eruptions is column collapse when the eruption column is or becomes too dense to be lifted high into the sky by air convection, and instead falls down the slopes of the volcano to form pyroclastic flows or surges ...
The Stratospheric Aerosol and Gas Experiment (SAGE) is a series of remote sensing satellite instruments used to study the chemical composition of Earth's atmosphere. Specifically, SAGE has been used to study the Earth's ozone layer and aerosols at the troposphere through the stratosphere. The SAGE instruments use solar occultation measurement ...
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