The Best Way to Shade Earth

Scientific American reported on ACOM scientist Simone Tilmes' experiments with geoengineering. The eruption of Mt. Pinatubo in June 1991 demonstrated that sulfur aerosols have a cooling effect by shading the earth's surface. The study found that harmful side effects (droughts, extreme rainfall) could be minimized by injecting particles into the atmosphere by airplane at 15° north latitude and 30° south. Those latitudes away from the equator provide better atmospheric mixing.

Reported by John Fialka, E&E News on July 5, 2018.


Teaser image
The June 12, 1991 eruption column from Mount Pinatubo taken from the east side of Clark Air Base. U.S. Geological Survey Photograph taken on June 12, 1991, 08:51 hours, by Dave Harlow.