https://advances.sciencemag.org/content/7/20/eabe3416
Toward practical stratospheric aerosol albedo modification: Solar-powered lofting View ORCID ProfileRu-Shan Gao1,†, View ORCID ProfileKaren H. Rosenlof1,*,†, View ORCID ProfileBernd Kärcher2, View ORCID ProfileSimone Tilmes3, Owen B. Toon4, View ORCID ProfileChristopher Maloney1,5 and Pengfei Yu6,* See all authors and affiliations Science Advances 14 May 2021: Vol. 7, no. 20, eabe3416 DOI: 10.1126/sciadv.abe3416 Article Figures & Data Info & Metrics eLetters PDF Abstract Many climate intervention (CI) methods have been proposed to offset greenhouse gas–induced global warming, but the practicalities regarding implementation have not received sufficient attention. Stratospheric aerosol injection (SAI) involves introducing large amounts of CI material well within the stratosphere to enhance the aerosol loading, thereby increasing reflection of solar radiation. We explore a delivery method termed solar-powered lofting (SPL) that uses solar energy to loft CI material injected at lower altitudes accessible by conventional aircraft. Particles that absorb solar radiation are dispersed with the CI material and heat the surrounding air. The heated air rises, carrying the CI material to the stratosphere. Global model simulations show that black carbon aerosol (10 microgram per cubic meter) is sufficient to quickly loft CI material well into the stratosphere. SPL could make SAI viable at present, is also more energy efficient, and disperses CI material faster than direct stratospheric injection -- 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/CAJ3C-07WgT%2Bdu2%3Ddk-kssVJRsUpH5_Q_Owzj2VA0baa8U_bWcA%40mail.gmail.com.
