HR: 17:12h
AN: A24A-06    [Abstracts]
TI: Intercontinental and Regional Modeling of Multiple Pollutants (Particulate Matter, Ozone, and Mercury) over the Pacific Regions
AU: * Jang, C C
EM: jang.carey@epa.gov
AF: USEPA, D243-01, 109 T.W. Alexander drive, RTP, NC 27711 United States
AU: Fu, J S
EM: jsfu@utk.edu
AF: University of Tennessee, Department of Civil and Environmental Engineering, Knoxville, TN 37996-2010 United States
AU: Wang, B
EM: bwang2@ncsu.edu
AF: USEPA, D243-01, 109 T.W. Alexander drive, RTP, NC 27711 United States
AU: Streets, D G
EM: dstreets@anl.gov
AF: Argonne National Laboratory, DIS/900 9700 South Cass Avenue, Argonne, IL 60439 United States
AU: Doll, D
EM: doll.dennis@epa.gov
AF: USEPA, D243-01, 109 T.W. Alexander drive, RTP, NC 27711 United States
AU: Woo, J
EM: jwoo@nescaum.org
AF: NESCAUM, 101 Merrimac St. 10th Floor., Boston, MA 021114 United States
AU: Hanna, A
EM: ahanna@unc.edu
AF: University of North Carolina at Chapel Hill, Carolina Environmental Program, Chapel Hill, NC 27599-6116 United States
AU: Vukovich, J
EM: jeff_vukovich@unc.edu
AF: University of North Carolina at Chapel Hill, Carolina Environmental Program, Chapel Hill, NC 27599-6116 United States
AU: Xiu, A
EM: aijun@email.unc.edu
AF: University of North Carolina at Chapel Hill, Carolina Environmental Program, Chapel Hill, NC 27599-6116 United States
AU: Adelman, Z
EM: zac@unc.edu
AF: University of North Carolina at Chapel Hill, Carolina Environmental Program, Chapel Hill, NC 27599-6116 United States
AB: There is increasing evidence that air pollutants originating from regions outside of North America such as Asia could impact U.S. domestic air quality. At the same time, the U.S. is both an importer and exporter of air pollutants. A pioneer modeling project, the Intercontinental Transport and Climatic Effects of Air Pollutants (ICAP) project, has been undertaken at U.S EPA to help understand and assess these impacts associated with the intercontinental transport of air pollutants, including particulate matter (PM), ozone (O3), and mercury (Hg). The on-going modeling efforts include a series of modeling (108-km grid resolution) and emissions related activities over the pacific regions, including a 2001 Base year simulation, 2030 scenarios (IPCC's A1B and B2 scenarios), and several sensitivity studies (e.g., removal of man-made Asian emissions and North America emissions, etc.). The trans-Atlantic modeling effort has also been under way. The key modeling tool used in this project is the Models?3/Community Multi-scale Air Quality (CMAQ) modeling system developed at EPA. In addition, a related modeling effort has been undertaken to conduct model simulations over the East Asia (36-km grid) and an East China region (12-km grid). An expansion of this China modeling effort to urban fine-grid modeling (4-km grid) in Beijing and Shanghai has also been under way. The trans-Pacific modeling results revealed that PM 2.5 and O3 can be transported across the Pacific Ocean over a time period of 5 to 10 days before reaching North America and the U.S. A sensitivity study by removing the Asian man-made emissions showed that the impact of Asian man-made emissions on North America appeared to be persistent through the entire year, although exhibiting seasonal variations. The spring (April) had higher impact for PM 2.5, up to 2-2.5 ug/m3 (monthly average) in the western U.S. and up to 1-1.5 ug/m3 in the eastern U.S., while the summer (July) and spring (April) has comparable impacts for O3, up to 5-6 ppb (daily max) in the western U.S. and up to 2 ppb in the eastern U.S. The results of future scenarios modeling indicated that sustainable development (IPCC B1 case) will have significant improvement over the continued growth (IPCC A1B case) on the air quality across the Pacific regions.
DE: 6334 Regional planning
DE: 3210 Modeling
DE: 1610 Atmosphere (0315, 0325)
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0345 Pollution--urban and regional (0305)
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting