Technologies which might stabilise the climate could do the reverse to international relations.
Schlagwort: Solar Radiation Management
Opinion: „How to cool the planet? The energy infrastructure that powers our civilization must be rebuilt, replacing fossil fuels with carbon-free sources such as solar or nuclear. But even then, zeroing out emissions will not cool the planet. This is a direct consequence of the single most important fact about climate change: Warming is proportional to the cumulative emissions over the industrial era.“
Yue, Chao; et al. (2021): Insensitivity of mass loss of Icelandic Vatnajökull ice cap to solar geoengineering
Yue, Chao; Schmidt, Louise Steffensen; Zhao, Liyun; Wolovick, Michael; Moore, John C. (2021): Insensitivity of mass loss of Icelandic Vatnajökull ice cap to solar geoengineering. [in review]. In The Cryosphere Discuss. [preprint]. DOI: 10.5194/tc-2021-318.
„Geoengineering by stratospheric aerosol injection (SAI) may reduce the mass loss from Vatnajökull ice cap (VIC), Iceland, by slowing surface temperature rise, despite relative increases in ocean heat flux brought by the Atlantic Meridional Circulation (AMOC). Although surface mass balance (SMB) is affected by the local climate, the sea level contribution is also dependent on ice dynamics. We use the Parallel Ice Sheet Model (PISM) to estimate the VIC mass balance under the CMIP5 (Coupled Model Intercomparison Project Phase 5) RCP4.5, 8.5 and GeoMIP (Geoengineering Model Intercomparison Project) G4 SAI scenarios during the period 1982–2089. The G4 scenario is based on the RCP4.5, but with additional 5 Tg yr−1 of SO2 injection to the lower stratosphere. By 2089, G4 reduces VIC mass loss from 16 % lost under RCP4.5, to 12 %. Ice dynamics are important for ice cap loss rates, increasing mass loss for RCP4.5 and G4 by 1/4 to 1/3 compared with excluding ice dynamics, but making no difference to mass loss difference under the scenarios. We find that VIC dynamics are remarkably insensitive to climate forcing partly because of AMOC compensation to SMB and low rates of iceberg calving making ocean forcing close to negligible. But the exceptionally high geothermal heat flow under parts of the ice cap which produces correspondingly high basal melt rates means that surface forcing changes are relatively less important than for glaciers with lower geothermal heat flow.“
German Podcast on Solar Radiation Management
German newspaper article on solar radiation management.
„One of the most important geoengineering options is Solar Radiation Management (SRM). SRM aims at reflecting inbound sunlight back into space, reducing the amount of heat absorbed by the earth and lowering global temperatures.“
PhysOrg: How will the global community react if vulnerable nations pioneer solar radiation geoengineering?
„Jonathan Gilligan, associate professor of Earth and environmental sciences and civil and environmental engineering, and a group of international researchers have illustrated potential international conflicts over climate change.“
„Australian scientists are rushing to develop new technologies — such as ways to block sunlight — to help preserve corals in the face of climate change.“
„Climate engineering sounds scary. But is coming whether we like it or not, this scientist says.“ (Interview with Holly Jean Buck)
„Spraying aerosols into the atmosphere may be fraught with risk, but to dismiss it out of hand is irresponsible, a climate scientist argues.“