Deadline: 25. June 2017

"Climate engineering, also called geoengineering, is the idea of deliberately intervening in Earth's global radiation budget with the goal of reducing some of the risks of accumulating greenhouse gases. The two most frequently discussed possibilities are injecting aerosols into the stratosphere or adding aerosols to low marine clouds, both of which would reflect more sunlight to space; other possibilities include artificially thinning cirrus cloud cover to increasing outgoing longwave radiation. This conference will focus on the scientific questions associated with this set of technologies with the goal of fostering a better understanding of their efficacy and risks. "

LINK

On CCS and BECCS. "But there's one CCS project experts agree stands out from the crowd. Last month, an Archer Daniels Midland (ADM) facility launched the Illinois Industrial Carbon Capture Project, which is expected to store 1.1 million tons of carbon dioxide per year in a sandstone layer a mile-and-a-half underground. Because it builds on a previous project, scientists are certain that billions of tons of carbon dioxide will easily remain trapped within the sediment. "

LINK

Xia, Lili; Nowack, Peer J.; Tilmes, Simone; Robock, Alan (2017): Impacts of Stratospheric Sulfate Geoengineering on Tropospheric Ozone. In: Atmos. Chem. Phys. Discuss., S. 1–38. DOI: 10.5194/acp-2017-434

"Using a version of the Community Earth System Model from the National Center for Atmospheric Research that includes comprehensive tropospheric and stratospheric chemistry, we model both stratospheric sulfur injection and solar irradiance reduction schemes, with the aim of achieving equal levels of surface cooling relative to the Representative Concentration Pathway 6.0 scenario. This allows us to compare the impacts of sulfate aerosol and solar dimming on atmospheric ozone concentrations."

LINK

On Boysen et al. (2017). "A proposal to turn back climate change by planting vast swathes of land with fast-growing trees and plants that can be burned for electricity, with the carbon they release captured and stored, is not “realistic and feasible”, scientists said Thursday. The idea, included in many economic and science models on how the world might try to reverse runaway climate change, cannot serve as an emergency back-up if the world fails to rapidly switch from fossil fuels to renewable energy and then regrets the consequences, said scientists at the Potsdam Institute for Climate Impact Research in Germany."

LINK