N-/EPA
United States
Environmental Protection
Agency
Environmental Sciences Research
Laboratory
Research Triangle Park NC 27711,
Research and Development
EPA-600/S8-82-024 Nov. 1982
Project Summary
MPTER-DS: The MPTER
Model Including Deposition
and Sedimentation
User's Guide
K. Shankar Rao and Lynne Satterfield
MPTER is the designation for a
multiple point source airquality model
with terrain adjustments. The
diffusion algorithm is based upon
Gaussian plume modeling assump-
tions. The MPTER model is available
from the U.S. Environmental Protec-
tion Agency and can be used for
estimating air pollutant concentra-
tions from multiple sources in rural
environments. The model has
technical input options for terrain
adjustment, stack downwash, gradual
plume rise, and buoyancy-induced
dispersion, and a great variety of
output options. The MPTER model.
therefore, may be considered a
research tool for exploratory use of
various assumptions and parameter
values.
This report is a User's Guide to the
MPTER-DS model which can
explicitly account for dry deposition of
gaseous and suspended particulate
pollutants in the plume. The MPTER-
DS model utilizes the Gaussian
plume-type diffusion-deposition
algorithms based on analytical
solutions of a gradient-transfer model.
These algorithms are easy to apply
and, in the limit when pollutant
settling and deposition velocities are
zero, they reduce to the usual
Gaussian plume diffusion algorithms
in the MPTER model.
This report outlines the modifica-
tions of the MPTER computer
program to include deposition. The
information is oriented to the
model user and the programmer. This
report is not a complete User's Guide
to the MPTER-DS model; it should be
used as a supplement to the original
User's Guide for MPTER.
This Project Summary was devel-
oped by EPA's Environmental Sci-
ences Research Laboratory, Research
Triangle Park, NC, to announce key
findings of the research project that is
fully documented in a separate report
of the same title (see Project Report
ordering information at back).
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K. Shankar Rao and Lynne Satterfield are with the National- Oceanic and
Atmospheric Administration, Oak Ridge, TN 37830.
Jack H. Shreffler is the EPA Project Officer (see below).
The complete report, entitled "MPTER-DS: The MPTER Model Including Deposi-
tion and Sedimentation—User's Guide." (Order No. PB 83-114 207; Cost:
$11.50, subject to change) will be available only from:
National Technical Information Service
5285 Port Royal Road
Springfield. VA 22161
Telephone: 703-487-4650
The EPA Project Officer can be contacted at:
Environmental Sciences Research Laboratory
U.S. Environmental Protection Agency
Research Triangle Park. NC 27711
U.S. GOVERNMENT PRINTING OFFICE: 1982 659-O17/O865
United States
Environmental Protection
Agency
Center for Environmental Research
Information
Cincinnati OH 45268
Postage and
Fees Paid
Environmental
Protection
Agency
EPA 335
Official Business
Penalty for Private Use $300
PS 0000329
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