MIT Tech Review – 03/01/2023

Solar geoengineering is the theory that humans can ease global warming by deliberately reflecting more sunlight into space. One possible means is spraying sulfur dioxide in the stratosphere, in an effort to mimic a cooling effect that occurs in the aftermath of major volcanic eruptions. It is highly controversial given concerns about potential unintended consequences, among other issues.

The UK effort was not a test of or experiment in geoengineering itself. Rather, the stated goal was to evaluate a low-cost, controllable, recoverable balloon system, according to details obtained by MIT Technology Review. Such a system could be used for small-scale geoengineering research efforts, or perhaps for an eventual distributed geoengineering deployment involving numerous balloons.

The “Stratospheric Aerosol Transport and Nucleation,” or SATAN, balloon systems were made from stock and hobbyist components, with hardware costs that ran less than $1,000.

Andrew Lockley, an independent researcher previously affiliated with University College London, led the effort last fall, working with European Astrotech, a company that does engineering and design work for high-altitude balloons and space propulsion systems.

They have submitted a paper detailing the results of the effort to a journal, but it has not yet been published. Lockley largely declined to discuss the matter ahead of publication, but he did express frustration that the scientific process was being circumvented.

“Leakers be damned!” he wrote in an email to MIT Technology Review. “I’ve tried to follow the straight and narrow path and wait for the judgment day of peer review, but it appears a colleague has been led astray by diabolical temptation.”

“There’s a special place in hell for those who leak their colleagues’ work, tormented by ever burning sulfur,” he added. “But I have taken a vow of silence, and can only confirm that our craft ascended to the heavens, as intended. I only hope that this test plays a small part in offering mankind salvation from the hellish inferno of climate change.”