Monat: Juli 2017

GlobalSpec: A Geoengineering Technique Called Cloud Brightening Could Slow Global Warming

„A new University of Washington study focuses on the idea of marine cloud brightening, which is being studied by a UW group as a strategy to offset global warming. The strategy is to spray saltwater into the air to make marine clouds reflect more incoming solar rays. Small-scale tests of marine cloud brightening could help answer many scientific questions about clouds and aerosols. The goal for these geoengineering tests would follow the recommendations from U.S. National Academies of Sciences’ 2015 that said any tests of geoengineering also yields scientific benefits.“


Vice News: 3 huge geoengineering projects are under way to save the planet

It’s no longer science fiction to imagine altering the Earth’s atmosphere to try to cool the planet. In fact, several major “geoengineering” experiments are already underway. The scientists pursuing them believe that there’s already too much carbon in the atmosphere — and that to avoid catastrophic climate change, we’ll need to resort to climate-cooling technologies.“


Carnegie Science: Could “cocktail geoengineering” save the climate?

On Cao, Long; et al. (2017). „Geoengineering is a catch-all term that refers to various theoretical ideas for altering Earth’s energy balance to combat climate change. New research from an international team of atmospheric scientists published by Geophysical Research Letters investigates for the first time the possibility of using a “cocktail” of geoengineering tools to reduce changes in both temperature and precipitation caused by atmospheric greenhouse gases.“


Cao, Long; et al. (2017): Simultaneous stabilization of global temperature and precipitation through cocktail geoengineering

Cao, Long; Duan, Lei; Bala, Govindasamy; Caldeira, Ken (2017): Simultaneous stabilization of global temperature and precipitation through cocktail geoengineering. In Geophys. Res. Lett. 37 (D6), p.[nbsp]117. DOI: 10.1002/2017GL074281.

„Here we investigate the possibility of stabilizing both global mean temperature and precipitation simultaneously by combining two geoengineering approaches: stratospheric sulfate aerosol increase (SAI) that deflects sunlight to space and cirrus cloud thinning (CCT) that enables more longwave radiation to escape to space.“