Spatial and temporal patterns and the chemical composition of the haze in the United States: an analysis of data from the IMPROVE network, 1988-1991
This report describes data obtained from the first three years, March 1988 through February 1991, of the IMPROVE measurement program (Interagency Monitoring of Protected Visual Environments). IMPROVE is a cooperative visibility monitoring effort between the U.S. Environmental Protection Agency, federal land management agencies, and state air agencies.
Haze -- United States
Aerosols -- Environmental aspects -- United States
Air -- Pollution -- United States