Science Daily November 23, 2018
A team of researchers in the US (Yale University, Harvard University) reviewed the capabilities and costs of various lofting methods intended to deliver sulfates into the lower stratosphere. They lay out a future solar geoengineering deployment scenario of halving the increase in anthropogenic radiative forcing beginning 15 years hence by deploying material to altitudes as high as ~20 km. After surveying an exhaustive list of potential deployment techniques, they settled upon an aircraft-based delivery system. Unlike the one prior comprehensive study on the topic, they conclude that no existing aircraft design—even with extensive modifications—can reasonably fulfill this mission…read more. Open Access TECHNICAL ARTICLE