Analysis and Modeling of Fine Particulate Matter (PMfine) in the Southeast United States

fine particulate matter

Wang, Binyu ; VINEY P. ANEJA, Committee Chair,Wang, Binyu ; VINEY P. ANEJA ; Committee Chair

University:North Carolina State University

关键词: fine particulate matter;   

Others  :  https://repository.lib.ncsu.edu/bitstream/handle/1840.16/404/etd.pdf?sequence=1&isAllowed=y

美国|英语

来源: null

【 摘 要 】

Particulate matter in the atmosphere with aerodynamic diameter 2.5 micrometer or less (PM[subscript 2.5]) has been studied extensively due to its impact on human health, climate, and other environmental effects. PM[subscript 2.5])in the southeast US as a whole and particularly in North Carolina (NC) are the focus of this research. The main body of this study includes two parts. The first part focuses on regional i.e. Southeast U.S. PM[subscript 2.5]) analysis consisting of two urban inland sites including locations N.Birmingham, AL (BHM) and Jefferson, GA (JST); two urban coastal sites viz., Gulfport, MS (GFP), Pensacola and FL (PNS); and three rural sites including Yorkville, GA (YRK), Centreville, AL (CTR), and Oak Grove, MS (OAK) (Chapter 2). The second part focuses on North Carolina counties consisting of three urban sites and two rural/agriculture sites in NC. The three urban N.C. sites are located in Forsyth County, Mecklenburg County, and Wake County, respectively; and the two rural/agriculture sites are located in Lenoir County and Caswell County, respectively (Chapter 3).The analysis of data and results indicate that the annual National Ambient Air Quality Standard (NAAQS) for PM[subscript 2.5]) (annual standard: 15 mg/m³) is exceeded in all of urban inland areas and one agriculture site which is surrounded by several power plants, but the annual average of PM[subscript 2.5]) is less than the annual standard at all of the other agricultural sites and urban coastal sites.High annual average concentrations are dominated by elevated values during summer. The 24-hour standard (65 mg/m³) for PM[subscript 2.5]) is not exceeded at any of the urban and/or agriculture sites. In the first part, analysis of chemical species revealed that yearly average fractions of organic matter (OM) with yearly average 4.26