DeBell, Linsey J., authorGebhart, Kristi A., authorHand, Jenny L., authorMalm, William C., authorPitchford, Marc L., authorSchichtel, bret A., authorWhite, Warren H., authorCooperative Institute for Research in the Atmosphere (Fort Collins, Colo.), publisher2023-07-102023-07-102006-11https://hdl.handle.net/10217/236742This report is the fourth in a series of periodic reports that describe the data collected by the Interagency Monitoring of Protected Visual Environments (IMPROVE) monitoring network. IMPROVE is a cooperative visibility monitoring effort between the U.S. Environmental Protection Agency (EPA), federal land management agencies, and state air agencies.November 2006.born digitalreportsengCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.Haze -- United States -- AnalysisAerosols -- Optical propertiesAerosols -- Observations -- AnalysisMeteorological opticsVisibility -- Research -- United StatesAir -- Pollution -- Environmental aspects -- United StatesText