Record Display for the EPA National Library Catalog


Main Title The Across North America Tracer Experiment (ANATEX) model evaluation study /
Author Clark, Terry L. ; Cohn, R. D.
Other Authors
Author Title of a Work
Cohn, Richard D.
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab. ;Analytical Sciences, Inc., Durham, NC.;Air Force Technical Applications Center, Alexandria, VA.
Publisher Atmospheric Research and Exposure Assessment Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1990
Report Number EPA/600/3-90/051
Stock Number PB90-261454
OCLC Number 22643240
Subjects Atmospheric diffusion--Research--North America ; Tracers (Chemistry)--Measurement ; Atmospheric diffusion--North America--Evaluation
Additional Subjects Air pollution ; Atmospheric diffusion ; Atmospheric models ; Mathematical models ; Fluorohydrocarbons ; Acidity ; Acid rain ; Trajectory analysis ; Tracer techniques ; ANATEX experiment
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-3-90-051 Headquarters Library/Washington,DC 10/03/2011
EKBD  EPA/600/3-90/051 Research Triangle Park Library/RTP, NC 03/22/1991
EKCD  EPA/600/3-90/051 CEMM/GEMMD Library/Gulf Breeze,FL 07/17/2018
ELBD ARCHIVE EPA 600-3-90-051 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023 DISPERSAL
EMBD  EPA/600/3-90/051 NRMRL/GWERD Library/Ada,OK 05/01/1992
ERAD  EPA 600/3-90-051 Region 9 Library/San Francisco,CA 12/14/1990
ESAD  EPA 600-3-90-051 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB90-261454 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xvii, 99, A-10, B-32 pages : illustrations, maps ; 28 cm
Three perfluorocarbon tracer gases were released at 2.5-day or 5.0-day intervals from two sites in central North America and sampled for 24-hr periods at 77 surface sites. The source-receptor distances ranged from less than 30 km to 3,000 km. The data were used to evaluate the long-range transport and diffusion simulations of acid deposition models and to establish a range of uncertainty for various model genres. The performances of three single-layer Lagrangian, six multiple-layer Lagrangian, and two multiple-layer Eulerian models were assessed using quantifiable measures based on comparisons of ensemble mean concentrations and plume widths as well as trajectory errors expressed as a function of transport time. In general, the multiple-layer Lagrangian models performed best in simulating the transport of the tracers, while the Eulerian models performed best in simulating the ensemble concentration frequency distributions. After 0.5 day of transport, trajectory errors ranged from 100 km to 400 km; after 2.5 days, the errors ranged from 300 km to 800 km. Beyond 2.5 days, errors from four Lagrangian models plateaued, while errors for the other models continued to increase, peaking at nearly 1,100 km after 3.5 days.
Shipping list no.: 90-655-P. "June 1990." Includes bibliographical references (pages 96-99). "EPA/600/3-90/051." "Funded ... under U.S. Department of Commerce contract no. 50-EANR-8-00025"--Title page verso.