What could go wrong? From Barry Brownstein at fee.org:
Harvard’s Gernot Wagner wants to save the world from global warming. His method? Develop a new type of plane that will fly more than 4,000 missions a year dumping particulates into the stratosphere.
Wagner and his colleague Wake Smith call the proposed plane “SAI Lofter (SAIL).” Anonymous individuals at “Airbus, Atlas Air, Boeing, Bombardier, GE Engines, Gulfstream, Lockheed Martin, NASA, Near Space Corporation, Northrup Grumman, Rolls Royce Engines, Scaled Composites, The Spaceship Company, and Virgin Orbit” provided input.
Estimates for SAIL’s design and operation seem sophisticated but are fabricated. Wagner and Smith admit, “No existing aircraft design—even with extensive modifications—can reasonably fulfill [their] mission.”
Wagner and others believe that scientists can calculate how many particulates will be needed to cool the Earth to a desired temperature.
Wagner and Smith are not alone in their geoengineering dreams. As early as 2006, Paul J. Crutzen, Nobel laureate in chemistry, called for “stratospheric geoengineering research.” Harvard professors David Keith and Frank Keutsch hope to experiment via balloons spraying “a fine mist of materials such as sulfur dioxide, alumina, or calcium carbonate into the stratosphere.” Wagner, Keith, and Keutsch are all part of the Solar Geoengineering Research Program at Harvard.