Monat: Dezember 2017

C2G2: Video/Audio: Communicating Geoengineering

„C2G2 encourages a broad societal debate on geoengineering, and strives to include a diversity of views and approaches in its events. This may sometimes lead to interventions being contested. C2G2 does not necessarily endorse or support the opinions stated by its presenters, and welcomes an open discussion of their merits.“

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Niemeier, Ulrike; Schmidt, Hauke (2017): Changing transport processes in the stratosphere by radiative heating of sulfate aerosols

Niemeier, Ulrike; Schmidt, Hauke (2017): Changing transport processes in the stratosphere by radiative heating of sulfate aerosols. In Atmos. Chem. Phys 17 (24), pp.[nbsp]14871–14886. DOI: 10.5194/acp-17-14871-2017.

The injection of sulfur dioxide (SO2) into the stratosphere to form an artificial stratospheric aerosol layer is discussed as an option for solar radiation management. Sulfate aerosol scatters solar radiation and absorbs infrared radiation, which warms the stratospheric sulfur layer. Simulations with the general circulation model ECHAM5-HAM, including aerosol microphysics, show consequences of this warming, including changes of the quasi-biennial oscillation (QBO) in the tropics. The QBO slows down after an injection of 4 Tg(S) yr−1 and completely shuts down after an injection of 8 Tg(S) yr−1.

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News Security Beat: Climate Engineering: Innovative Solution or Ethical Dilemma?

„“Climate engineering can be a way to build a better world,” said Katharine Mach, a senior research scientist at Stanford University during a recent virtual workshop on the promises and pitfalls of climate engineering held by the Institute on Science for Global Policy, in partnership with the Forum for Climate Geoengineering Assessment at American University, and the School of Sustainability at Arizona State University.“

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