"“An interesting question is the extent to which the scoping team will want to include solar geo-engineering, which is probably the most feasible method of stabilizing at 1.5 degrees Celsius, at least in the short term,” climate scientist Ken Caldeira said by email."

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Sanz-Perez, Eloy S.; Murdock, Christopher R.; Didas, Stephanie A.; Jones, Christopher W. (2016): Direct Capture of CO2 from Ambient Air. In Chemical reviews. DOI 10.1021/acs.chemrev.6b00173.

"This Review provides a historical overview of the field of DAC, along with an exhaustive description of the use of chemical sorbents targeted at this application. Solvents and solid sorbents that interact strongly with CO₂ are described, including basic solvents, supported amine and ammonium materials, and metal–organic frameworks (MOFs), as the primary classes of chemical sorbents."

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The news review of calendar week 36 in 2016 is now available here.

Tang, M. J.; Keeble, J.; Telford, P. J.; Pope, F. D.; Braesicke, P.; Griffiths, P. T. et al. (2016): Heterogeneous reaction of ClONO2 with TiO2 and SiO2 aerosol particles. Implications for stratospheric particle injection for climate engineering. In Atmos. Chem. Phys. Discuss., pp. 1–42. DOI 10.5194/acp-2016-756.

"Introduction of particles into the stratosphere would scatter solar radiation back to space, thereby reducing the temperature at the Earth’s surface and hence the impacts of global warming. Minerals such as TiO₂ or SiO₂ are among the potentially suitable aerosol materials for stratospheric particle injection due to their greater light scattering ability compared to stratospheric sulfuric acid particles. However, the heterogeneous reactivity of mineral particles towards trace gases important for stratospheric chemistry largely remains unknown, precluding reliable assessment of their impacts on stratospheric ozone which is of key environmental significance."

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