CO₂-removal News

Peer-reviewed Publications

Gabriel, C. J.; Robock, Alan (2015): Stratospheric geoengineering impacts on El Niño/Southern Oscillation

Gabriel, C. J.; Robock, Alan (2015): Stratospheric geoengineering impacts on El Niño/Southern Oscillation. In Atmos. Chem. Phys. 15 (20), pp.[nbsp]11949–11966. DOI: 10.5194/acp-15-11949-2015[nbsp]

„To examine the impact of proposed stratospheric geoengineering schemes on the amplitude and frequency of El Niño/Southern Oscillation (ENSO) variations we examine climate model simulations from the Geoengineering Model Intercomparison Project (GeoMIP) G1–G4 experiments. Here we compare tropical Pacific behavior under anthropogenic global warming (AGW) using several scenarios: an instantaneous quadrupling of the atmosphere’s CO2 concentration, a 1 % annual increase in CO2 concentration, and the representative concentration pathway resulting in 4.5 W m−2 radiative forcing at the end of the 21st century, the Representative Concentration Pathway 4.5 scenario, with that under G1–G4 and under historical model simulations.„

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Peer-reviewed Publications

Weisenstein, D. K.; et al. (2015): Solar geoengineering using solid aerosol in the stratosphere

Weisenstein, D. K.; Keith, D. W.; Dykema, J. A. (2015): Solar geoengineering using solid aerosol in the stratosphere. In Atmos. Chem. Phys. 15 (20), pp.[nbsp]11835–11859. DOI: 10.5194/acp-15-11835-2015[nbsp]

„We use a two-dimensional (2-D) chemistry–transport–aerosol model to capture the dynamics of interacting solid and liquid aerosols in the stratosphere. […] Our results suggest that appropriately sized alumina, diamond or similar high-index particles may have less severe technology-specific risks than sulfate aerosols do. These results, particularly the ozone response, are subject to large uncertainties due to the limited data on the rate constants of reactions on the dry surfaces.„

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Peer-reviewed Publications

Moore, John C.; et al. (2015): Atlantic hurricane surge response to geoengineering

Moore, John C.; Grinsted, Aslak; Guo, Xiaoran; Yu, Xiaoyong; Jevrejeva, Svetlana; Rinke, Annette et al. (2015): Atlantic hurricane surge response to geoengineering. In Proc Natl Acad Sci USA, p.[nbsp]201510530. DOI: 10.1073/pnas.1510530112[nbsp]

„We estimate that stratospheric sulfate aerosol geoengineering may somewhat ameliorate Atlantic hurricane intensity and frequency, but there will be more “Katrina”-level events than during the past 30 y. Geoengineering would likely be reasonably effective at controlling coastal flood risk relative to the coastal flood risk expected under the Representative Concentration Pathway (RCP) 4.5 greenhouse gas warming, in part, due to its impact on global sea level rise, although flood risk would still be significantly larger than at present.“

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Peer-reviewed Publications

Box, Michael A.; Box, Gail P. (2016): Physics of radiation and climate

Box, Michael A.; Box, Gail P. (2016): Physics of radiation and climate. Boca Raton, FL: CRC Press, Taylor [&] Francis Group.

Book including a chapter (18.2) on CE.“Physics of Radiation and Climate takes a look at how the outward flow of longwave or terrestrial radiation is affected by the complexities of the atmosphere’s molecular spectroscopy. This book examines the planet in its current state and considers the radiation fluxes, including multiple scattering, photochemistry, and the ozone layer, and their impact on our climate overall.“

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Peer-reviewed Publications

Chris, Robert (2015): Systems thinking for geoengineering policy

Chris, Robert (2015): Systems thinking for geoengineering policy. Balsingstoke: Routledge.

„Systems Thinking for Geoengineering Policy is the first book to theorise geoengineering in terms of complex adaptive systems theory and to argue for the theoretical imperative of adaptive management as the default methodology for an effective low risk means of confronting the inescapable uncertainty and surprise that characterise potential climate futures. The book illustrates how a shift from the conventional Enlightenment paradigm of linear reductionist thinking, in favour of systems thinking, would promote policies that are robust against the widest range of plausible futures rather than optimal only for the most likely, and also unlock the policy paralysis caused by making long term predictions of policy outcomes a prior condition for policy formulation.“

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