Indian Ocean Experiment

The Indian Ocean Experiment was a 1999 multinational scientific study designed to measure the transport of air pollution from Southeast Asia into the Indian Ocean. The project was led by Veerabhadran Ramanathan.

Findings

Plumes of sulfates, smoke particles, and other anthropogenic aerosols blowing over the Indian Ocean were blocking sunlight and promoting cloud formation.
The amount of sunlight reaching the Earth's surface was reduced by 10%.