Why blocking the sun to cool the planet is bound to go wrong (euobserver.com)

• Zero margin of error: sudden stop would cause rapid warming.
• Requires continuous maintenance for decades or centuries.
• No international governance; models have high uncertainty.

"Reflecting sunlight with tiny particles sprayed from airplanes could reduce global temperatures, but would need to be maintained for decades, perhaps centuries, and the margin of error is essentially zero. A sudden halt after deployment would cause rapid, catastrophic warming."