Comments on Tropospheric Iron Salt Aerosol (ISA) injection geoengineering method?
Ron Baiman
Here's a link to main (as far as I can tell) paper: https://esd.copernicus.org/articles/8/1/2017/
Here's a short summary of what I've been able to understand from the paper: Iron Salt Aerosol (ISA) injection by 100 large coal burning power stations is estimated to have a global cooling effect equivalent to eliminating current global CO2 equivalent GHG emissions of approximately 40 GT per year. The iron salt aerosol would be elevated to heights of 1000 meters above ground and would stay in the troposphere for only weeks which would allow for quick cessation and reversibility of its impact in the event of unintentional adverse side effects. The iron aerosol may also interact with and reduce methane and CO2 in the troposphere and stimulate ocean fertilization and carbon sequestration when it falls into the ocean (Oeste et al, 2017, p. 33).
Here's a link to another paper related to CDR that cites the above paper: https://www.frontiersin.org/articles/10.3389/fmars.2019.00022/full
I'm wondering why there appears to be very little interest in this method for geoengineering?
Insights would be most welcome!
Thank you,
Ron Baiman
The future can be hopeful, but we must move at lightning speed to make it so!