Geoengineering offers several large-scale techniques to address climate change impacts, including greenhouse gas reduction and Solar Radiation Management (SRM). SRM aims to cool the climate, mainly through stratospheric aerosol injection and marine cloud brightening. Stratospheric aerosol injection involves placing sulfate aerosols in the atmosphere to replicate cooling effects seen after volcanic eruptions. Marine cloud brightening targets ocean clouds to increase their reflectivity. While these methods promise potential benefits, they have not been implemented significantly in real-world scenarios, raising concerns about their uncertainties and environmental impacts. Additionally, cloud seeding has been used since the 1940s to enhance precipitation.
Geoengineering refers to a number of large-scale techniques aimed at reducing climate change impacts, either by lowering greenhouse gases or through Solar Radiation Management (SRM) to cool the climate.
Stratospheric aerosol injection proposes to introduce sulfate aerosols high in the atmosphere to cool the climate, mimicking volcanic eruptions that naturally lower temperature.
Marine cloud brightening is a method to make low ocean clouds brighter, reflecting more sunlight back into space. Most SRM methods have only been modeled or tested at small scales.
Cloud seeding, which has been practiced since the 1940s, aims to enhance precipitation and snowpack through methodologies that modify weather patterns.
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