According to a new study published this week in the journal Environmental Research Letters, reflecting sunlight back into space is actually “the cheapest way for us to combat global warming”. Image credit: Robert Chase
The study states a system of pipes suspended by floating platforms, capable of delivering 1–5 million metric tonnes (Mt) of albedo modification material to altitudes of 18–30 km.
Researchers estimate that the project would cost $1.5 billion a year to shield the earth from the sun’s rays using a SRM (solar radiation management) system.
Jay Apt from Carnegie Mellon University said: “We hope our study will help other scientists looking at more novel methods for dispersing particles.”