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Solar geoengineering, or solar radiation modification (SRM) is a proposed type of climate engineering in which sunlight (solar radiation) would be reflected back to space to limit or reverse human-caused climate change. Most methods would increase the planetary albedo (reflectivity), for example with stratospheric aerosol injection. Although most techniques would have global effects, localized protective or restorative methods have also been proposed to protect natural heat reflectors including sea ice, snow, and glaciers.
Solar geoengineering appears able to prevent some or much of climate change. Climate models consistently indicate that it is capable of returning global, regional, and local temperatures and precipitation closer to pre-industrial levels. Solar geoengineering's principal advantages are the speed with which it could be deployed and become active and the reversibility of its direct climatic effects. Stratospheric aerosol injection, the most widely studied method, appears technically feasible and inexpensive in terms of direct financial costs. Solar geoengineering could serve as a response if climate change impacts are greater than expected or as a temporary, complementary measure while atmospheric greenhouse gas concentrations are lowered through emissions reductions and carbon dioxide removal. Solar geoengineering would not directly reduce carbon dioxide concentrations in the atmosphere, and thus does not address ocean acidification. Solar geoengineering's excessive, poorly distributed, or sudden and sustained termination would pose serious environmental risks. Other negative impacts are possible. Governing solar geoengineering is challenging for multiple reasons.
referencePosted on 09 Sep 2024, this text provides information on Miscellaneous in Governmental related to Governmental. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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