Record Display for the EPA National Library Catalog


Main Title User's guide for PAL 2.0, a gaussian-plume algorithm for point, area, and line sources /
Author Petersen, William B.
Other Authors
Author Title of a Work
Rumsey, E. Diane.
Publisher U.S. Environmental Protection Agency, Atmospheric Sciences Research Laboratory,
Year Published 1987
Report Number EPA-600-8-87-009
Stock Number PB87-168787
OCLC Number 755935686
Subjects Air--Pollution--United States--Computer programs ; Air--Pollution--United States--Forecasting ; Air quality--United States ; Air--Pollution--Computer programs ; Air--Pollution--Forecasting
Additional Subjects Air pollution ; Mathematical models ; Deposition ; Sedimentation ; Particles ; Gaussian plume models ; PAL model ; Pollution sources ; Point pollutant sources ; Stationary pollutant sources ; Area pollutant sources
Internet Access
Description Access URL
Local Library Info
Library Local Subject Local Note
EKB Library copy is an earlier version, with printed date "February 1987" on cover.
Library Call Number Additional Info Location Last
EKBD  EPA 600/8-87-009 Research Triangle Park Library/RTP, NC 02/23/2022
ELBD ARCHIVE EPA 600-8-87-009 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
NTIS  PB87-168787 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 87 pages ; 28 cm
PAL is an acronym for the Point, Area, and Line source algorithm. PAL is a method of estimating short-term dispersion using Gaussian-plume steady state assumptions. The algorithm can be used for estimating concentrations of non-reactive pollutants at 99 receptors for averaging times of from 1 to 24 hours, and for a limited number of point, area, and line sources (99 of each type). Calculations are performed for each hour. The hourly meteorological data required are wind direction, wind speed, stability class, and mixing height. Single values of each of these four parameters are assumed representative for the area modeled. The Pasquill-Gifford or McElroy-Pooler dispersion curves are used to characterize dispersion. The PAL model can treat deposition of both gaseous and suspended particulate pollutants in the plume since gravitational settling and dry deposition of the particals are explicitly accounted for. In the limit when pollutant settling and deposition velocities are zero, they reduce to the usual Gaussian-plume diffusion algorithms.
"March 1987." "EPA/600-8-87-009."