February 1, 2021 |Walker Raymond Lee, Douglas G MacMartini, Daniele Visioni, Ben Kravitz | Manuscript Submitted to Geophysical Research Letters | Source

“Injecting SO2 in the spring leads to peak aerosol optical depth (AOD) in the summer.”  -p.2

“…it is plausible that Arctic-focused SAI may be more likely to be deployed, and sooner, than any global SAI strategy.” -p.11

Link To Full Document_Essoar_High-latitude Stratospheric Aerosol Geoengineering

Sulfur Dioxide (SO₂)  Effects on Health

"Sulfur dioxide (SO2) is a colorless, reactive air pollutant with a strong odor. This gas can be a threat to human health, animal health, and plant life."- NPS

https://www.nps.gov/subjects/air/humanhealth-sulfur.htm

Link To Source

Overview

"Sulfur dioxide (SO₂) is a colorless gas with a characteristic, irritating, pungent odor.  Exposure to sulfur dioxide may cause irritation to the eyes, nose, and throat. Symptoms include:  nasal mucus, choking, cough, and reflex bronchi constriction, and when liquid: frostbite  Workers may be harmed from exposure to sulfur dioxide."  -CDC_NIOSH

https://www.cdc.gov/niosh/topics/sulfurdioxide/default.html

Link To Source

Harmful Effects Of Sulfur Dioxide (SO₂)

"-Short-term exposures to SO2 can harm the human respiratory system and make breathing difficult.         

-Small particles may penetrate deeply into the lungs and in sufficient quantity can contribute to health problems.

-SO2 and other sulfur oxides can contribute to acid rain which can harm sensitive ecosystems."   -EPA

https://www.epa.gov/so2-pollution/sulfur-dioxide-basics#effects

Link To Source

https://www.cryopolitics.com/2016/04/27/a-visit-to-maine-a-doorway-to-the-arctic/

Thank you to RD for sharing above article_”The Maine doorway to the Arctic”.