by A Ito · 2017 · Cited by 18 — In this study, I evaluate the impacts of SRM deployment on terrestrial ecosystem functions using a process-based ecosystem model (the Vegetation Integrative
PUBLIC PERCEPTION OF RISKS OF SRM 15/18 There might be potential beneficial effects of SAI on ecology Potential for amelioration of effects of anthropogenic climate change • Decreased average and extreme high temperatures globally might reduce mortality from extreme heat, reducing extinction risk for vulnerable species • Reduced incidence of extreme precipitation events might protect riparian and other habitats, protecting certain ecosystems • Some amelioration of warming effects in Arctic (depending on scenario), reducing losses to arctic communities and species • Potential preservation of permafrost, sea ice and organisms and ecosystems dependent on those • Slowing advances of tropical and subtropical pests and pathogens to temperate regions (?) • Slowing/alteration of climate velocities and need for migration of species, relocation of communities and biomes (which is a dicey proposition anyway) 16/18 ANSWERS: What are the risks and impacts of SAI on ecological systems ???????
by X Jin · 2022 · Cited by 17 — This study contributes to a comprehensive assessment of the effects of SRM on both the physical climate and the global carbon cycle.
Solar Radiation Management, which uses technology to reflect a small proportion of sunlight away from earth to offset warming from greenhouse gases. Work on
# Solar radiation management – risks from reversing climate change. Just as current temperature increases are likely fuelling changes in climate (drought, wet seasons) and extreme weather events (storms, flooding), so too will cooling via SRM. To predict the effects of cooling, new models are needed reflecting where, what cooling agent is used and how much, and for how long it is injected into the stratosphere.5 As models are currently under development, it is difficult to say which countries/regions would benefit or be harmed by consequent changes in climate and weather patterns. Any pattern changes, however, could lead to unanticipated losses for insurers.6 One example of this could be a shift in the geographical range of communicable diseases like malaria, which could redistribute in developing countries.7 It could also lead to an increase or geographical shift of extreme weather events like droughts or hurricanes.8 In general benefits and risks would most likely not be fairly distributed globally.
by LM Russell · 2012 · Cited by 127 — Current research suggests that SRM or CDR might diminish the impacts of climate change on ecosystems by reducing changes in temperature and precipitation.
Volcanic stratospheric clouds are produced by injections of SO2, so that might be the gas of choice, but some have suggested H2SO4 to reduce growth of aerosol particles (e.g., Pierce et al. Outdoor research, which involves injecting salt particles into marine clouds or various substances into the stratosphere, requires governance, including review of potential environmental impacts, monitoring of the experiments, and sanctions if the researchers break the rules (e.g., Shepherd et al. It includes the Geoengineering Model Inter-comparison Project (GeoMIP), in which 19 climate modeling groups have simulated how the climate would respond to reduced insolation, creation of a stratospheric aerosol cloud, or brightened marine clouds to reduce climate change from various global warming scenarios. Future research is planned with scenarios that might involve credible deployments, such as balancing overshoot scenarios to keep global warming at less than 1.5–2.0 K above preindustrial temperatures (e.g., Tilmes et al. Research shows that it may be possible to control regional climates (e.g., Tilmes et al.
**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.