"If stratospheric aerosol injection were used for climate intervention, aircraft passengers would be exposed to the resulting sulfate aerosol cloud. We show here, based on simulations from three Earth system models for a high-latitude low-altitude injection scenario, that for the scenario studied the resulting sulfuric acid concentration inside the cabin would on the average be just below air quality exposure guidelines, but more work is needed to determine how often those levels would be hazardous."
The problem might not be confined to passengers. Ages ago a firm I worked with prepositioned on the Yucatan Peninsula a bunch of vehicles equipped with instrument cabs, each containing a myriad of electronic equipment. During the weeks this equipment was waiting for assignments El Chichón volcano erupted, venting as volcanoes do a lot of sulfate aerosol. Combined with atmospheric humidity this became sulfuric acid aerosol, which infiltrated the instrument cabs and ate up thousands of electrical contacts on PCB edge connectors, cable junctions, etc. The entire fleet was disabled and had to be recalled for refit.
Humidity in aircraft cabins and in general at high altitude is typically very low, so perhaps this wouldn't be a threat? But it seems a good idea to assess that.
#sai
#StratosphericAerosolInjection
#srm
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2026GL122804?af=R
Abstract. Stratospheric Aerosol Injection (SAI) has been proposed to counteract global warming. Countering SAI may prove attractive to actors who oppose deployment and methods have been suggested but not tested for efficacy. Using a global climate model with double moment aerosol microphysics, we investigate the viability of “Stratospheric Aerosol Scrubbing” (SAS) scenarios where coarse calcite aerosol is deliberately injected to enhance aerosol growth, reduce particle radiative efficiency, and enhance sedimentation thereby reducing SAI impacts. We simulate two equatorial SAI and SAS scenarios: pulse interventions lasting 2 months, and sustained interventions lasting 20 years. We find that SAS reduces the global Stratospheric Aerosol Optical Depth by 30 %–40 % when the calcite mass is equal to the sulphur dioxide (SO2) mass in the pulse intervention and half of the SO2 mass in the sustained intervention. The global radiative impact in the sustained simulations is reduced from −3.3 to −2.3 Wm−2 under SAS, a counterbalancing of approximately 30 %. Our results suggest that SAS could be partially effective at offsetting SAI impacts.
Riceviamo e pubblichiamo la testimonianza di una lavoratrice Sai, che prende spunto da un'auto (la sua) rimossa per raccontare come "diritti degli utenti, condizioni lavorative e salari sono in una fase di regressione mai vista".
Anime of Japan
mZmZmmZ
Doug Bostrom
Anna Post
Cartorum
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