8 results ·
● Live web index
E
epa.gov
official
https://www.epa.gov/geoengineering/about-geoengineering
For example, geoengineering includes the removal of carbon dioxide from the atmosphere (also called Carbon Dioxide Removal – CDR) through methods such as direct air capture and storage, ocean iron fertilization, or ocean alkalinity enhancement. These activities are referred to as **Solar Geoengineering** or **Solar Radiation Modification (SRM).** Most proposed solar radiation modification techniques involve adding material to the atmosphere to increase the amount of incoming sunlight reflected back to space. Marine solar radiation management (mSRM) techniques, on the other hand, involve adding materials to ocean waters, sea ice, or the lower atmosphere to increase the amount of solar radiation reflected at or near the ocean's surface to limit surface warming or sea ice melt. * *Marine Cloud Brightening (MCB)* – adding particles, such as sea spray, to the lower atmosphere (near the surface) to increase the reflectivity of clouds over the ocean. Another subset of geoengineering activities intends to cool the Earth by intentionally modifying the concentration of certain gases in the atmosphere, including carbon dioxide.
E
en.wikipedia.org
article
https://en.wikipedia.org/wiki/Solar_radiation_modification
Solar radiation modification (SRM), also called solar geoengineering, is a group of large-scale approaches to reduce global warming · The most-researched SRM
S
solargeoeng.org
article
https://www.solargeoeng.org/what-is-solar-geoengineering/
# What is Solar Geoengineering. Professor of Global Sustainability Governance, Copernicus Institute of Sustainable Development, Utrecht University. Assistant Professor of Global Environmental Governance, Utrecht University. Solar geoengineering (also known as solar radiation management or modification, SRM), refers to a set of speculative technologies to lower global temperatures by artificially intervening in the climate systems of our planet. Simply put, solar geoengineering interventions would reflect some incoming sunlight back into space and hence ‘dim the sun’. Instead, solar geoengineering focuses on ‘symptom treatment’, seeking to limit global warming by merely masking the effect of greenhouse gas emissions. The most prominent example of solar geoengineering is stratospheric aerosol injection (SAI), which calls for injecting tiny reflective particles into the stratosphere, for example, by airplanes or balloons. Stratospheric aerosol injection is the most prominent example of solar geoengineering because it would be used to influence the climate at a planetary scale, seems technically feasible, and is seen as affordable. Other examples of solar geoengineering are:.
A
arcticiceproject.org
article
https://www.arcticiceproject.org/what-you-need-to-know-about-solar-radiation-…
Space-based geoengineering involves the use of space-based devices to reflect or block sunlight, thereby reducing the amount of solar energy reaching the Earth.
A
annualreviews.org
research
https://www.annualreviews.org/content/journals/10.1146/annurev-environ-112321…
### Annual Review of Environment and Resources. *Annual Review Environment and Resources*. Solar geoengineering, also called sunlight reflection or solar radiation modification (SRM), is a potential climate response that would cool the Earth's surface and reduce many other climate changes by scattering on order 1% of incoming sunlight back to space. SRM can only imperfectly correct for elevated greenhouse gases, but it might complement other climate responses to reduce risks, while also bringing new risks and new challenges to global governance. As climate alarm and calls for effective near-term action mount, SRM is attracting sharply increased attention and controversy, with many calls for expanded research and governance consultations along with ongoing concerns about risks, misuse, or overreliance. We review SRM's history, methods, potential uses and impacts, and governance needs, prioritizing the approach that is most prominent and promising, stratospheric aerosol injection. ## Environmental Governance. #### Related Articles from Annual Reviews. knowable magazine from Annual Reviews. knowable magazine from Annual Reviews. Climate Resource Center, Article Collection from Annual Reviews. Climate Resource Center, Article Collection from Annual Reviews.
C
climate.gov
official
https://www.climate.gov/news-features/understanding-climate/solar-radiation-m…
**Solar Radiation Modification (SRM) refers to deliberate, large-scale actions intended to decrease global average surface temperatures by increasing the reflection of sunlight away from the Earth.** Proposed SRM methods involve the use of aerosols (small particles) or other materials to increase the reflectivity of the atmosphere, clouds, or Earth’s surface. **Long-term protection of Earth’s climate and oceans requires substantial reductions in emissions and atmospheric concentrations of CO2 and other GHGs. SRM is not considered a substitute for climate mitigation efforts, which include decarbonization and GHG emission cuts.** SRM research is being conducted as a response to growing concerns that the pace of CO2 emissions reductions and CDR technology development is not sufficient to avoid severe impacts of climate change in the next decades. **Many of the processes most important for understanding SRM approaches—such as those that control the formation of clouds and aerosols—are among the most uncertain components of the climate system.** Climate models differ in simulating large-scale aerosol climate effects, including on surface temperatures, due to variations in how aerosol processes, atmospheric transport and mixing, and physics are represented.
Y
youtube.com
video
https://www.youtube.com/watch?v=iEUMwqjeErM
Solar geoengineering aims to address the Earth's energy balance directly by increasing Earth's albido.
S
salatainstitute.harvard.edu
research
https://salatainstitute.harvard.edu/research-initiatives/the-harvard-solar-ge…
The Harvard Solar Geoengineering Research Program (SGRP) aims to reduce uncertainties surrounding solar geoengineering; generate critical science, technology, and policy insights; and help inform the public debate surrounding this controversial idea. Recognizing that solar geoengineering could not be a replacement for reducing emissions or adapting to climate impacts, SGRP draws on Harvard’s research capabilities and global convening power to provide the knowledge necessary in considering solar geoengineering as a supplement to broader mitigation and adaptation efforts. The Harvard Solar Geoengineering Research Program (SGRP) aims to reduce uncertainties surrounding solar geoengineering; generate critical science, technology, and policy insights; and help inform the public debate surrounding this controversial idea. Recognizing that solar geoengineering could not be a replacement for reducing emissions or adapting to climate impacts, SGRP draws on Harvard’s research capabilities and global convening power to provide the knowledge necessary in considering solar geoengineering as a supplement to broader mitigation and adaptation efforts. * In 1980, Professor Tom Schelling chaired a National Academy of Sciences committee whose report, *Changing Climate*, addressed the potential for solar geoengineering to counter global warming.