natural sources of particulate matter
Wildfires and meteorological conditions influence the co-occurrence of multiple harmful air pollutants including fine particulate matter PM 25 and ground-level ozoneWe examine the spatiotemporal characteristics of PM 25 ozone co-occurrences and associated population exposure in the western United States US. PM may be classified as primary or secondary depending on the process that led to its formation. Natural Sources Of Particulate Matter Stats Nz Fine particulate matter PM 25 is an air pollutant that is a concern for peoples health when levels in air are high. . The frequency spatial extent and. They include volcanic eruption wind and dust storms forest fire salt spray rock debris reactions between gaseous emissions and soil erosion. Fine particles also form from the reaction of gases or droplets in the atmosphere from sources such as power plants. Man-made activities such as fuel combustion industrial processes steel industry. ...