„Scientists say we need drastically to cut carbon pollution. Not only that, we must look for ways to remove carbon from the atmosphere. Right now, trees are the best tool for the job. Artificial approaches to carbon capture remain too expensive to be practical on a large scale, but several methods show promise. Here are four.“
„What if the poor and developing nations most vulnerable to climate change took matters into their own hands with geoengineering?“
„Following the success of the first international climate engineering conference in 2014 (CEC14), the IASS will host a second climate engineering conference in 2017 (CEC17). The conference will be held in late summer/early fall 2017 in Berlin and will serve three purposes: As an advanced review for the current state of climate engineering research, as a forum for developing synergies between academic, policy, and civic stakeholders, and as an exposition of the evolution, diversity, and relevance of this issue at an important stage in the development of options to mitigate climate change.“
„The subject of McNutt’s lecture on “Climate Intervention: A Last Resort? is based on two parallel studies she chaired for the NAS Committee on Geoengineering Climate that were published simultaneously earlier this year. An interesting change in terminology can be detected, from “geoengineering” to “intervention.” Indeed, the committee was tasked with conducting “a technical evaluation of a limited number of proposed geoengineering techniques, including examples of both solar radiation management and carbon dioxide removal techniques.”“
Feng, Ellias Y.; Keller, David P.; Koeve, Wolfgang; Oschlies, Andreas (2016): Could artificial ocean alkalinization protect tropical coral ecosystems from ocean acidification? In Environ. Res. Lett. 11 (7), p. 74008–74008. DOI 10.1088/1748-9326/11/7/074008.
„Artificial ocean alkalinization (AOA) is investigated as a method to mitigate local ocean acidification and protect tropical coral ecosystems during a 21st century high CO2 emission scenario. Employing an Earth system model of intermediate complexity, our implementation of AOA in the Great Barrier Reef, Caribbean Sea and South China Sea regions, shows that alkalinization has the potential to counteract expected 21st century local acidification in regard to both oceanic surface aragonite saturation Ω and surface pCO2.“
Youtube playlist on CE videos, such as presentations and conferences.
Nowack, Peer Johannes; Abraham, Nathan Luke; Braesicke, Peter; Pyle, John Adrian (2016): Stratospheric ozone changes under solar geoengineering. Implications for UV exposure and air quality. In Atmos. Chem. Phys. 16 (6), pp. 4191–4203. DOI 10.5194/acp-16-4191-2016.
„Here, we present results of a standard SRM modelling experiment in which the incoming solar irradiance is reduced to offset the global mean warming induced by a quadrupling of atmospheric carbon dioxide. For the first time in an atmosphere–ocean coupled climate model, we include atmospheric composition feedbacks for this experiment. While the SRM scheme considered here could offset greenhouse gas induced global mean surface warming, it leads to important changes in atmospheric composition.„
Irvine, Peter J.; Kravitz, Ben; Lawrence, Mark G.; Muri, Helene (2016): An overview of the Earth system science of solar geoengineering. In WIREs Clim Change. DOI 10.1002/wcc.423.
“ Here we review the state-of-the-art knowledge about stratospheric sulfate aerosol injection and an idealized proxy for this, ‘sunshade geoengineering,’ in which the intensity of incoming sunlight is directly reduced in models.“
„Researchers are finding that kelp, eelgrass, and other vegetation can effectively absorb CO2 and reduce acidity in the ocean. Growing these plants in local waters, scientists say, could help mitigate the damaging impacts of acidification on marine life.“
Sanderson, Benjamin M.; O’Neill, Brian C.; Tebaldi, Claudia (2016): What would it take to achieve the Paris temperature targets? In Geophys. Res. Lett. DOI 10.1002/2016GL069563
Including negative emissions. „We propose a set of idealized emission pathways consistent with the targets. If countries reduce emissions in line with their INDCs, the 2°C threshold could be avoided only if net zero greenhouse gas emissions (GHGEs) are achieved by 2085 and late century negative emissions are considerably in excess of those assumed in Representative Concentration Pathway (RCP) 2.6 (net −5[nbsp]Gt[nbsp]CO2/yr, compared with −1.5[nbsp]Gt[nbsp]CO2/yr in RCP2.6). More aggressive near-term reductions would allow 2°C to be avoided with less end-of-century carbon removal capacity.“
