Record Display for the EPA National Library Catalog


Main Title Long-range transport and transformation of SO2 and sulfate /
Author Henmi, Teizi. ; Reiter, Elmar R.
Other Authors
Author Title of a Work
Reiter, Elmar R.
CORP Author Colorado State Univ., Fort Collins. Dept. of Atmospheric Science.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Publisher U.S. Environmental Protection Agency, Environmental Sciences Research Laboratory,
Year Published 1979
Report Number EPA-600/4-79-068; EPA-R-805271
Stock Number PB80-134950
OCLC Number 57123027
Subjects Acid rain--Environmental aspects--United States. ; Air--Pollution--Mathematical models.
Additional Subjects Sulfur dioxide ; Sulfates ; Transport theory ; Mathematical models ; Air pollution ; Chemical reactions ; Precipitation(Meteorology) ; Aerosols ; Cumulus clouds ; Computerized simulation ; Ohio River Basin ; Computer programs ; Fortran ; Atmospheric dispersion ; TRAJET computer program ; Univac-1100 computers
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-4-79-068 Headquarters Library/Washington,DC 04/04/2016
EJBD  EPA 600-4-79-068 Headquarters Library/Washington,DC 11/02/2016
EKBD  EPA-600/4-79-068 Research Triangle Park Library/RTP, NC 02/22/2011
ERAD  EPA 600/4-79-068 Region 9 Library/San Francisco,CA 10/29/2012
ESAD  EPA 600-4-79-068 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB80-134950 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xv, 167 pages : illustrations ; 28 cm.
Technical descriptions and computer programs are presented for two models that calculate long-range transport, diffusion, transformation of SO2 to sulfate, and dry and precipitation deposition of initially emitted SO2. One model treats the mixing layer height as constant; the other (at the expense of computer time) varies the mixing layer height diurnally and tracks pollutants in three layers--the daytime mixing layer, the nocturnal ground-based stable layer, and the daytime mixed layer that remains above the nocturnal stable layer. Application of the multi-layer model over a region encompassing the Ohio River Basin produced patterns of SO2 and sulfate concentrations that are statistically correlated with observed concentrations. An empirical formula for the transformation rate of SO2 to sulfate is derived. Using a cumulus cloud model, results showed that sulfate aerosol capture by cloud water through microphysical processes is sufficient to produce observed levels of sulfate in rain water.
"November 1979." "EPA-600/4-79-068."