*Known Unknowns in Stratospheric Aerosol Injection (SAI) Proposals* https://www.eventbrite.com/e/meertalk-july-3-tickets-357616038197
Dr. Daniel Cziczo, Professor and Department Head of Earth, Atmospheric, and Planetary Sciences will speak about the unanticipated impacts of ‘designer’ aerosols suggested for increasing Earth’s albedo. The Earth has warmed since pre-industrial times, due primarily to the anthropogenic addition of greenhouse gases to the atmosphere. Most strategies to address this warming have called for a reduction of emissions and, often, accompanying removal of greenhouse gases. Alternative proposals suggest masking warming by increasing particles and/or clouds to scatter incoming solar radiation. The purpose of this talk is to discuss unanticipated impacts of ‘designer’ aerosols suggested for increasing Earth’s albedo. We will specifically discuss calcite particles which have a more complex atmospheric lifetime than has been previously considered; this includes aqueous and hydrate phases that can lead to ozone loss. Laboratory studies also suggests particle addition to the atmosphere can also perturb global radiative balance by affecting high altitude cloud formation and properties. These results show that an overly simplistic set of assumptions regarding intentional particle emissions to the atmosphere can lead to incorrect estimates of the radiative effect and fail to identify unintended consequences. ---------- Forwarded message --------- De : Ye Tao <t...@rowland.harvard.edu> Date: dim. 3 juil. 2022 à 17:16 Subject: Talk on the scientific fundamentals of SAI To: <healthy-planet-action-coalit...@googlegroups.com> Dear colleagues, I believe this talk taking place today <https://www.eventbrite.com/e/meertalk-july-3-tickets-357616038197> by Dan Cziczo (Purdue) would interest several among you. Best, Ye -- -- 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 geoengineering+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/geoengineering/CAHodn9-XhGCARt-KxOyZu0bWqqNtC_0ZWvrhJ_w_SRWghzZCTw%40mail.gmail.com.
