期刊
出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.2307434120
关键词
solar radiation management; sun shield; climate change
This paper presents an approach to Solar Radiation Management (SRM) using a tethered solar shield at the modified gravitational L1 Lagrange point. The proposed configuration with a counterweight toward the Sun avoids the limitation on shield surface density and potentially reduces the total mass significantly. Moreover, only 1% of the total weight needs to come from Earth, with the rest being sourced from lunar dust or asteroids. This approach could lead to a significant cost reduction and potentially be more effective than previous space-based SRM strategies.
This paper presents an approach to Solar Radiation Management (SRM) using a tethered solar shield at the modified gravitational L1 Lagrange point. Unlike previous proposals, which were constrained by the McInnes bound on shield surface density, our proposed configuration with a counterweight toward the Sun circumvents this limitation and potentially reduces the total mass by orders of magnitude. Furthermore, only 1% of the total weight must come from Earth, with ballast from lunar dust or asteroids serving as the remainder. This approach could lead to a significant cost reduction and potentially be more effective than previous space-based SRM strategies.
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