https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5223310
*Authors* Catello Leonardo Matonti, Marina Coco, Chantal Cappellett, Bruce Chesley, Christer Fuglesang, Giuseppe Governale, Nishanth Pushparaj, Marcello Romano, Gunnar Tibert, Lisa Wilk *19 April 2025* *Abstract* The objective of this paper is to present a roadmap for the development toward a Planetary Sunshade System, a space-based solar geoengineering project aimed at reversible solar radiation modification to mitigate global warming.Earth’s climate change is mostly due to the increasing concentration of greenhouse gases in the atmosphere, which leads to a general rise of the temperatures. A space-based geoengineering infrastructure has been previously proposed to reduce the oncoming solar radiation, by placing a `solar light umbrella’, henceforth called Planetary Sunshade System, between the Sun and the Earth.To address the full development of a Planetary Sunshade System, a roadmap is needed which considers a step-by-step high-level plan of technology development, mission planning, launch preparation, international cooperation, highlighting the multi-phase development strategy from initial design to final deployment.First, the roadmap phases for production and deployment are outlined in chronological order. System design and factors such as mass, dimensions, area, and the total number of solar-sail spacecraft are discussed. Logistic aspects, including in-space assembly of the fully deployed system, are also examined. Finally, launch preparation is discussed encompassing heavy launcher design, facilities, production and launch sites.The proposed roadmap not only provides a starting point for the design and development of the Planetary Sunshade System but also a critical tool for evaluating the feasibility of direct climate action from space. Through this paper, we aim to establish the groundwork for a future Planetary Sunshade endeavour, and to contribute to the broader discussion on space-based climate action. *Source: SSRN* -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/geoengineering/CAHJsh9-wu_85BoQoE8F3wAkdj4zFKPO_9qvCQfpoC9rmyzL%3DGg%40mail.gmail.com.
