Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Validation Testing of New Mechanisms with Outdoor Chamber Data. Volume 3: Calculation of Photochemical Reaction Photolysis Rates in the UNC Outdoor Chamber.
Author Jeffries, H. E. ; Sexton, K. G. ; Arnold, J. R. ; Kale, T. L. ;
CORP Author North Carolina Univ. at Chapel Hill. School of Public Health.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Sciences Research Lab.
Publisher Jan 89
Year Published 1989
Report Number EPA/600/3-89/010C;
Stock Number PB89-159057
Additional Subjects Test chambers ; Air pollution ; Mathematical models ; Photochemical reactions ; Reaction kinetics ; Smog ; Photolysis ; Climatology ; Information systems ; Sites ; Performance evaluation ; Urban areas ; Graphs(Charts) ; Comparison ;
Library Call Number Additional Info Location Last
NTIS  PB89-159057 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/08/1989
Collation 105p
A new model is described for computing in-chamber actinic flux using site specific conditions that include time of day, air pressure, total column ozone, total column water vapor, relative humidity, aerosol type, aerosol optical density at 500 nm, and the spectral albedo of the aerosol. Included in this model are a highly accurate solar coordinate model, two broad band models for predicting the Total Solar Radiation (TSR) and Eppley Ultraviolet Radiometer irradiances, a TFE film transmission model, a total chamber transmission model, a reflective floor model, and a treatment for clouds. This model runs on MS/PC-DOS type machines. A description of how these models were used to compute the in-chamber actinic flux every 16-minutes for every day in the UNC database is given. A description is also given of how these new actinic fluxes were used with kinetic data on species absorption cross sections and quantum yields to computer the photolysis rates of 20 reactions. A separate column contains the appendices for this document.