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Main Title Residence time of atmospheric pollutants and long-range transport /
Author Henmi, Teizi. ; Reiter, Elmar R. ; Edson., Roger
Other Authors
Author Title of a Work
Reiter, Elmar R.
Edson, Roger.
CORP Author United States. Environmental Protection Agency. Office of Reaserch and Development.; Colorado State Univ., Fort Collins. Dept. of Atmospheric Science.; Environmental Sciences Research Lab., Research Triangle Park, N.C. Meteorology and Assessment Div.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Environmental Sciences Research Laboratory,
Year Published 1978
Report Number EPA-600/4-78-003; EPA-803685; PB277168
Stock Number PB-277 168
OCLC Number 08083546
Subjects Air--Pollution--Mathematical models.
Additional Subjects Air--Pollution--Mathematical models ; Air pollution ; Mathematical models ; Atmospheric motion ; Transport properties ; Aerosols ; Cumulus clouds ; Numerical analysis ; Wind(Meteorology) ; Eastern Region(United States)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-4-78-003 Headquarters Library/Washington,DC 03/13/2012
EJED  EPA 600/4-78-003 OCSPP Chemical Library/Washington,DC 01/01/1988
EKBD  EPA-600/4-78-003 Research Triangle Park Library/RTP, NC 08/01/2003
ELBD  EPA 600-4-78-003 AWBERC Library/Cincinnati,OH 12/17/2012
ESAD  EPA 600-4-78-003 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-277 168 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 89 p. : ill. ; 28 cm.
The Lagrangian trajectory model which is suitable for the study of long-range transport of pollutants, is developed. The computer program is capable of calculating trajectories over the region of the U.S. using routine sounding data. The output consists of tables of locations of trajectory end points at each time-step, dispersion widths along a trajectory, and the plotting of trajectories. The regional residence times, T, of SO2 in the mixing layer are calculated for the region of the United States east of 105 degrees W longitude, based on climatological data of the mixing layer depth and hourly precipitation data. The results are shown as isopleths of T over the studied area for the cold season (November to April) and for the warm season (May to October). Taking detailed microphysical processes into consideration, the scavenging due to cumulus cloud precipitation is studied. The results can be summarized as follows: The scavenging coefficient of aerosols by cloudwater droplets is one order of magnitude larger in the continental cloud than in the maritime cloud. On the other hand, the scavenging coefficient of aerosols by rainwater droplets is slightly larger in maritime clouds than in continental clouds. As a whole, aerosols are more efficiently scavenged in the continental cloud than in the maritime cloud.
Bibliography: p. 84-88.