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Atmospheric Environment 37 (2003) 38733883 Evaluation and improvement of ammonia

Summary: Atmospheric Environment 37 (2003) 38733883
Evaluation and improvement of ammonia
emissions inventories
William Battyea
, Viney P. Anejab,
*, Paul A. Roelleb
EC/R Incorporated, 6330 Quadrangle Drive, Suite 325, Chapel Hill, NC 28517, USA
Department of Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695-8208, USA
Received 2 September 2002; accepted 30 April 2003
Two case studies are performed to improve ammonia emissions inputs used to model fine particulate matter (PM2.5 is
the portion of particulate matter smaller than 2.5 mm aerodynamic diameter) formation of ammonium sulfate and
ammonium nitrate. Ammonia emissions are analyzed in detail for North Carolina and the San Joaquin Valley (SJV) of
California, with a focus on the Charlotte, NC, and Fresno, California metropolitan areas. A new gridded ammonia
emissions inventories suitable for atmospheric modeling for the two case study cities was also developed.
Agricultural sources accounted for the bulk of ammonia emissions in both case studies. Livestock waste contributed
about 80% in North Carolina and 64% in the SJV, while fertilizer application contributed about 67% in both
domains. Forests and non-agricultural vegetation contributed 5% in North Carolina and 12% in the SJV. Motor


Source: Aneja, Viney P. - Department of Marine, Earth and Atmospheric Sciences, North Carolina State University


Collections: Environmental Sciences and Ecology; Geosciences