Brown Cloud
Published: August 13, 2009The Brown Cloud — a pollutant-related visibility problem — is caused by tiny particles smaller than 10 microns in size, carbon-containing particles and the chemical reactions of certain gases, including NOx, NH3, and SO2. The collective pollutants block light, causing the distinctive Brown Cloud and impeding visibility.
The Brown Cloud — a pollutant-related visibility problem — is caused by tiny particles smaller than 10 microns in size, carbon-containing particles and the chemical reactions of certain gases, including NOx, NH3, and SO2. The collective pollutants block light, causing the distinctive Brown Cloud and impeding visibility.