Poster's note: Reviewer 2 does geoengineering covered the paper "*Transparent occulters: A nearly zero-radiation pressure sunshade to support climate change mitigation"* on their podcast. *Title of Podcast:* Zero pressure space sunshades - Hein | Reviewer 2 does <https://podcasts.apple.com/us/podcast/reviewer-2-does-geoengineering/id1529459393>geoengineering 24/02/2023 Some links to listen to the podcast:
https://podcasts.google.com/feed/aHR0cHM6Ly9hbmNob3IuZm0vcy8zMjkzZDIzMC9wb2RjYXN0L3Jzcw/episode/MDIyNjJiMDgtNjU0Ni00NzNjLWI0ZmQtNzBkYTU3MzllYWI4?ep=14 https://podcasts.apple.com/us/podcast/zero-pressure-space-sunshades-hein/id1529459393?i=1000601498629 https://open.spotify.com/show/2KSB1lU18qh5gYIRDYPJMb *Description:* Andreas Hein entertains @geoengineering1 with more barmy space-based geoengineering nonsense. Expect moon dust, rail guns, space junk, cube sats and all sorts of other semi-relevant distractions. Paper: Transparent occulters: A nearly zero-radiation pressure sunshade to support climate change mitigation https://doi.org/10.1016/j.actaastro.2022.12.00 <https://doi.org/10.1016/j.actaastro.2022.12.006>6 On Sun, Dec 18, 2022, 8:26 PM ayesha iqbal <[email protected]> wrote: > https://www.sciencedirect.com/science/article/abs/pii/S0094576522006762 > > *Authors* > Olivia Borgue, Andreas M.Hein > > 10 December 2022 > > https://doi.org/10.1016/j.actaastro.2022.12.006 > > *Abstract* > Limiting climate change to within the 2 °C limit requires net zero > emissions of CO2 by 2050. However, the window of opportunity is closing > fast. Geoengineering as the intentional and large-scale manipulation of the > environment and the climate is increasingly discussed as a complement to > ongoing mitigation efforts. As a particular geoengineering approach, > space-based geoengineering proposes blocking or dissipating a fraction of > incoming sunlight via a large number of occulting membranes, located close > to the Lagrange 1 point between the Sun and the Earth. However, the mass of > these sunshades, around 107–108 tons, and their deployment cost and effort > render them about 10³ times more costly than terrestrial geoengineering > alternatives. > > In this article, affordable sunshades, to be positioned close to L1 of the > Earth-Sun system, are proposed, which are between 102 to 10³ times lighter > than the lightest existing sunshade concepts. This is achieved via a nearly > zero-radiation pressure design based on transparent refractive surfaces > manufactured with ultra-thin polymeric films and SiO2 nanotubes. The > lightest sunshade proposed in this article has a total mass of > approximately 5.5 × 105 tons and its deployment requires between 859 and > 399 annual launches during a ten year period. > > *Source*: ScienceDirect > -- 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/CAOyeF5tGthUcwJP8wkMq2_jACdjNauK5aHmhXYpePnZhOTWj%3Dg%40mail.gmail.com.
