https://journals.plos.org/climate/article?id=10.1371/journal.pclm.0000133
*Authors* Benjamin C. Bromley, <https://journals.plos.org/climate/article?id=10.1371/journal.pclm.0000133#> Sameer H. Khan, <https://journals.plos.org/climate/article?id=10.1371/journal.pclm.0000133#> Scott J. Kenyon <https://journals.plos.org/climate/article?id=10.1371/journal.pclm.0000133#> *8 February 2023* *Citation*: Bromley BC, Khan SH, Kenyon SJ (2023) Dust as a solar shield. PLOS Clim 2(2): e0000133. https://doi.org/10.1371/journal.pclm.0000133 Abstract We revisit dust placed near the Earth–Sun L1 Lagrange point as a possible climate-change mitigation measure. Our calculations include variations in grain properties and orbit solutions with lunar and planetary perturbations. To achieve sunlight attenuation of 1.8%, equivalent to about 6 days per year of an obscured Sun, the mass of dust in the scenarios we consider must exceed 1010 kg. The more promising approaches include using high-porosity, fluffy grains to increase the extinction efficiency per unit mass, and launching this material in directed jets from a platform orbiting at L1. A simpler approach is to ballistically eject dust grains from the Moon’s surface on a free trajectory toward L1, providing sun shade for several days or more. Advantages compared to an Earth launch include a ready reservoir of dust on the lunar surface and less kinetic energy required to achieve a sun-shielding orbit. Source: PLOS Climate -- 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 on the web visit https://groups.google.com/d/msgid/geoengineering/CAOyeF5t_XVCNcHvQvjhMMO6xPm-OFLY91eU%3D%2BX62mrq-70QsuQ%40mail.gmail.com.
