SOLAR GEOENGINEERING WEEKLY SUMMARY (23 SEPTEMBER - 29 SEPTEMBER 2024) <https://substack.com/app-link/publications/1346479/drafts/f5fbe1d9-5eb2-443a-9dd5-56168aef4301?publication_id=1346479&post_id=149627646&utm_source=post-email-title&utm_campaign=email-post-title&isFreemail=false>
*Subscribe to our newsletter to receive monthly updates on Solar Geoengineering:* Solar Geoengineering Updates <https://solargeoengineeringupdates.substack.com?utm_source=substack&utm_campaign=publication_embed&utm_medium=email> Monthly news summaries about solar geoengineering. Links to scientific papers, news articles, jobs, podcasts, and videos. <https://solargeoengineeringupdates.substack.com?utm_source=substack&utm_campaign=publication_embed&utm_medium=email> By Andrew Lockley <https://solargeoengineeringupdates.substack.com?utm_source=substack&utm_campaign=publication_embed&utm_medium=email> ------------------------------ DEADLINES(NEW) NOAA request for comments on potential solar radiation modification research regulation | Deadline 19 November, 2024) <https://groups.google.com/g/geoengineering/c/rDVllJ4FaNI> ------------------------------ THESISDesign of a Solar Sailing Precursor Mission and Spacecraft to L1 for Global Warming Mitigation <https://www.diva-portal.org/smash/record.jsf?pid=diva2%3A1900953&dswid=-8192> Wilk, L. (2024). Design of a Solar Sailing Precursor Mission and Spacecraft to L1 for Global Warming Mitigation. *Abstract* The global surface temperature has been steadily increasing over the last 50 years, reaching an all-time high in 2023. One proposed strategy to mitigate global warming is geoengineering, specifically by placing a sunshade in the vicinity of Lagrange Point One L1, in the Sun-Earth system. This sunshade system would block part of the sunlight that reaches Earth, thereby lowering the surface temperature. A viable transportation method for the sunshade system to L1 is solar sailing, or solar propulsion, which uses light to propel the spacecraft forward. In this thesis, a proposed solar sailing precursor spacecraft is developed to demonstrate the feasibility of this approach and validate the used technology. The design focuses on the solar sail, the booms and the attitude control system. The selected systems are scalable and currently available, eliminating the need for new technology development. The precursor spacecraft will be a 12U CubeSat equipped with a 144 m² solar sail. The sail membrane will be made out of Clear Polymer 1 (CP1), and coated on both sides with vaporized aluminium to achieve high reflectivity. The sail will be supported by four 8.5 m long Collapsible Tubular Mast (CTM) booms made from Carbon Fiber Reinforced Polymer (CFRP). Momentum management will be performed using an Active Mass Translator (AMT), and Reflectivity Control Devices (RCD). The precursor spacecraft will be launched into geostationary orbit and spend approximately 1500 days solar sailing to the vicinity of L1. The estimated cost to realize this mission is around 5.5 M US$. ------------------------------ WEB POSTSConspiracy Theorists and Vaccine Skeptics Have a New Target: Geoengineering <https://www.nytimes.com/2024/09/26/climate/geoengineering-conspiracy-theorists-skeptics.html> (The NewYork Times)Silicon Valley Renegades Pollute the Sky to Save the Planet <https://www.nytimes.com/2024/09/25/climate/rogue-solar-geoengineering.html> (The New York Times)India team explores the impact of SRM aerosol injection altitude on precipitation <https://www.degrees.ngo/india-team-explores-the-impact-of-srm-aerosol-injection-altitude-on-precipitation/> (The Degrees Initiative)As Earth’s Climate Unravels, More Scientists Are Ready to Test Geoengineering <https://www.scientificamerican.com/article/geoengineering-wins-reluctant-interest-from-scientists-as-earths-climate/> (Scientific American)Plan to refreeze Arctic sea ice shows promise in first tests <https://www.newscientist.com/article/2448831-plan-to-refreeze-arctic-sea-ice-shows-promise-in-first-tests/> (New Scientist) ------------------------------ JOB OPPORTUNITIESOpportunity for Postdoctoral Researchers at the Climate Systems Engineering initiative at UChicago <https://climateengineering.uchicago.edu/csei-postdoctoral-researcher-faculty-research-statements/> "Solar geoengineering, particularly stratospheric aerosol injection (SAI), is being studied as a potential last resort to prevent global warming from exceeding critical climate tipping points. The feasibility, benefits, and risks of these methods depend largely on the physical and chemical properties of the injected aerosols. I am interested in working with a postdoctoral researcher to combine laboratory experiments and process modeling to provide physics-informed insights into three key areas of SAI: (1) evolution of aerosol size distribution and chemical composition for existing and new SAI methods; (2) impact of SAI aerosols on stratospheric ozone depletion; (3) impact of SAI aerosols on tropospheric aerosol-cloud interactions." Conference Organiser at The Degrees Initiative | Cape Town, South Africa <https://www.degrees.ngo/careers/job-opportunity-conference-organiser/> "The Degrees Initiative is a UK-based NGO that builds the capacity of developing countries to evaluate solar radiation management geoengineering (SRM), a controversial proposal for reducing some impacts of climate change by reflecting sunlight away from the Earth. Degrees is neutral on whether SRM should ever be used, but we believe that developing countries should be empowered to conduct their own research and play a central role in SRM discussions." ------------------------------ *UPCOMING EVENTS*(NEW) Governing deployment of geoengineering <https://x.com/Herbsimmens/status/1839346844939509863?t=fV7M2zhwHMdJjt75TGpXaw&s=19> | 02 October 2024 | Online*Arctic Sea Ice Road Map introduction webinar by Ocean Visions <https://docs.google.com/forms/d/e/1FAIpQLSdYWWPx8124Ut3kGs86hqCuop-XNU_Dqz7Rgr232ShZkuxv7w/viewform?pli=1&mc_cid=a94d9c9a6b&mc_eid=c595b86cd4> | 02 October & 03 October 2024 | Online**(Modifying Solar Radiation <https://sosvclimatetech.com/agenda/> | 14 October 2024 | Online* Discovery workshop focussing on atmospheric science (SRM) | 18 October 2024 | Online Integrative synthesis workshop focusing on identifying gaps in current governance & ethics | 18 November 2024 | Online *(NEW) Climate Repair Seminar Series - Autumn 2024 <https://www.tickettailor.com/events/centreforclimaterepair1/1253490>* 1: On the bright side: new developments in Marine Cloud Brightening technology | 16 October 2024 2: Field trials for a cooler planet: sea, sky and ice | 23 October 2024 3: Ethics and Governance (title TBA) | 06 November 2024 4: Good COP, Bad COP: a post-COP29 assessment | 27 November 2024 *2025 Solar Radiation Management Annual Meeting by Simons Foundation <https://www.simonsfoundation.org/event/solar-radiation-management-annual-meeting-2025/> | 24-25 April 2025 | New York **The 2025 Degrees Global Forum <https://substack.com/redirect/8521c00b-652a-4d78-822f-7ae393c57068?j=eyJ1IjoiMjJrMHl3In0.wQQsFypG52typ8FI2nhnJ8eUoUIIkdCkuhmzxNYKtgE> | 12-16 May 2025 | Cape Town, South Africa**Artic Repair Conference 2025 by University of Cambridge & Center for Climate Repair <https://substack.com/redirect/90f81f14-d09c-4418-8d97-c6621d753433?j=eyJ1IjoiMjJrMHl3In0.wQQsFypG52typ8FI2nhnJ8eUoUIIkdCkuhmzxNYKtgE> | 26-28 June 2025 | Cambridge UK* Solar Geoengineering Events Calendar <https://teamup.com/ks64mmvtit583eitxx> ------------------------------ PODCASTSThe case for Arctic geoengineering; world’s oldest cheese | New Scientist Podcast Weekly: The case for Arctic geoengineering; world’s oldest cheese New Scientist Podcasts 25:05 <https://podcasts.apple.com/us/podcast/weekly-the-case-for-arctic-geoengineering-worlds/id1496847791?i=1000670952103&uo=4> "Could we re-freeze the Arctic… and should we? The Arctic is losing ice at an alarming rate and it’s too late to save it by cutting emissions alone. Geoengineering may be our only hope. A company called Real Ice has successfully tested a plan to artificially keep the region cold - but what are the consequences and will it work on the scale we need?" The Geopolitics of Climate Engineering: A Climate Lifeline or Pandora’s Box? | The World Unpacked <https://carnegieendowment.org/podcasts/the-world-unpacked/the-geopolitics-of-climate-engineering-a-climate-lifeline-or-pandoras-box?lang=en> "In the fight against climate change, a controversial new idea is gaining traction: solar geoengineering. Solar geoengineering, or solar radiation modification, is an emerging technology that aims to reflect sunlight back into space to cool planet Earth. In a world that is struggling to bring about the behavioral and political changes needed to reduce climate change, an innovative tech approach might seem like an alluring silver bullet. But the reality is not so simple. In this episode, Sophia sits down with Cynthia Scharf, a senior fellow at the International Center for Future Generations and former senior strategy director for the Carnegie Climate Governance Initiative. They discuss solar geoengineering's risks and promises, as well as its implications for geopolitics and conflict." ------------------------------ YOUTUBE VIDEOSSolar Geoengineering: What You Need to Know | GBH Forum Network <https://www.youtube.com/watch?v=s8x4WT19C54> “The alarming acceleration of global warming is a grave threat to all forms of life. The only viable solution is the reduction and removal of the excess greenhouse gases produced chiefly by fossil fuels. This requires immediate transition to renewable energy, combined with removal of atmospheric CO2. But there is a move to delay that transition by means of solar geoengineering. This approach involves the release of chemical particles high in the atmosphere that will shade the Sun. It does not eliminate the CO2 buildup. Solar geoengineering introduces serious risks that must be explained by responsible scientists.” The Geopolitics of Climate Engineering: A Climate Lifeline or Pandora’s Box? | Carnegie Endowment <https://www.youtube.com/watch?v=bzQeZOABMJE> “The Carnegie Endowment for International Peace generates strategic ideas and independent analysis, supports diplomacy, and trains the next generation of international scholar-practitioners to help countries and institutions take on the most difficult global problems and advance peace.” Loann Marquant: Interview with SRM Youth Watch | SRM Youth Watch <https://www.youtube.com/watch?v=qoIrpumLN8U> “Loann Marquant got involved in environmental affairs and international relations over the past few years through his engineering studies, as president of his school's geopolitics association and later on through professional experiences at the European Union Delegation to the UN in New York and at the French Mission to the UN in Geneva. More recently, he became a Youth Climate Voice from the Carnegie Climate Governance Initiative and took part in trainings and international events around the topic of SRM. This year, he started a master's degree in public policy at Harvard Kennedy School.” -- 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/CAHJsh99fyRTfXj8xjmmu3qbJSdsUmurcyw2vx2xj6w2A9o0ogA%40mail.gmail.com.
