| Directory > Science > Environment > Air Quality > Air Dispersion Modeling > Software Polair
An integrated model (offered by ODOTECH of Montreal, Canada) which includes a choice of mapping,
meteorological data input and editing, and Gaussian or Puff dispersion modeling from point, line
or area sources.
http://www.odotech.qc.ca/polair/polair_en.pdf
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The LASAT model
Developed by Janicke Consulting (located in Danum, Germany), the Lagrangian Simulation of Aerosol
Transport (LASAT) model utilizes stochastic processes to simulate numerically the transport and
turbulent diffusion of a group of representative particles. LASAT has a preprocessor which
calculates the meteorological profiles and three-dimensional wind fields required for the
simulations.
http://www.janicke.de/lasat/e_lasat.htm
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The MIDAS Models
Dispersion models, offered by ABS Consulting (from their office in Bethesda, Maryland, USA), for
routine and accidental airborne releases. Versions available are: quick-running plume model, urban
dispersion model and inside building model. Real-time displays of the dispersing plume on
site-specific maps.
http://www.absconsulting.com/midas/advantage.html
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EXSIM
A mathematical model that predicts the overpressure (explosion) generated by the accidental release
and ignition of a gas cloud in a congested area of an industrial plant onshore, or offshore on oil
drilling platforms. The model was developed by Shell Oil Global Solutions in England and by the
Telemark Technological R&D Center (Tel-Tek) in Norway.
http://www.exsim-consultants.com/
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PROKAS
An emission factors model (as per the German Emission Factors Handbook) coupled with a Gaussian air
dispersion model, PROKAS is used to calculate air pollutant concentrations caused by automotive
traffic on a network of streets. Documentation is available from Lohmeyer Consulting Engineers of
Karlsruhe, Germany.
http://www.lohmeyer.de/air-eia/models/prokas.htm
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The AirQUIS Model
The Norwegian Institute for Air Research (NILU) has developed an Air Quality Information System
(AirQUIS) having: an emission inventory data base; dispersion models; and a geographical
information system (GIS) module. The dispersion models include a source oriented model (EPISODE), a
puff-trajectory model, and models for traffic in street canyons and on roads (ROADAIR and
CONTILENK).
http://www.nilu.no/airquis/
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Danish Operational Street Pollution Model - OSPM
OSPM is a street pollution model, developed by the National Environmental Research Institute,
Department of Atmospheric Environment of Denmark. A free evaluation version of OSPM with a Windows
user interface can be downloaded.
http://www.dmu.dk/1_viden/2_Miljoe-tilstand/3_luft/4_Spredningsmodeller/5_OSPM/default_en.asp
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Federal Aviation Administration's Dispersion Modeling Program
Discusses the EDMS (Emissions and Dispersion Modeling System) developed by the U.S.'s Federal
Aviation Administration (FAA) and how to order copies.
http://www.aee.faa.gov/emissions/edms/edmshome.htm
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SCIPUFF Model
The Titan Systems Corporation is a technology research and development group headquartered in San
Diego, California and serving the U.S. defense and intelligence communities. The group has
developed a Lagrangian puff dispersion model known as the SCIPUFF model.
http://www.titan.com/products-services/abstract.html?docID=136
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The CAPARS System
Developed by AlphaTRAC, the Computer-Assisted Protective Action Recommendation System (CAPARS)
provides plume extent, weather, hazard, and related information needed to support all levels of
emergency management and response to an accidental release of hazardous gas. AlphaTRAC is located
in Westminster, Colorado, USA.
http://www.alphatrac.com/
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Chilean Air Pollution Dispersion Model (CADM)
The CADM was developed at the Geophysics Department of the University of Chile. It is a
comprehensive, three dimensional, multi-layer, Eulerian atmospheric chemical transport model,
designed to simulate relevant physical and chemical processes in the troposphere. Although not
restricted to any particular region, the model was developed focusing on the Metropolitan Region
around Santiago de Chile.
http://www.dgf.uchile.cl/~schmitzr/report_0.html
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DIPCOT
A three-dimensional Lagrangian model for dispersion over complex terrain. It was developed in
Greece by the Environmental Research Laboratory (EREL) which is part of the Greek National Center
for Scientific Research (DEMOKRITOS).
http://milos.ipta.demokritos.gr/DIPCOT.htm
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Hazard Prediction and Assessment Capability (HPAC)
HPAC models the release to and transport of materials in the atmosphere and its impact on civilian
and military populations. Contains weather interface, supporting infrastructure and probabilistic
solutions (i.e., "How good is the prediction"). Licensing from the U.S. Defense Threat
Reduction Agency is available for non-commercial usage.
http://www.dtra.mil/td/acecenter/td%5Fhpac%5Ffact.html
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The Sophware Group
Based in Toronto, Canada, the Sophware Group develops and markets a range of environmental
software, including the sophMOD dispersion modeling workbench for many of the US EPA and Ontario
dispersion models.
http://www.sophware-group.com/
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YSA Atmospheric Modeling
Yamada Science & Art Corporation (YSA), located in Santa Fe, New Mexico, USA, specializes in
computer modeling of atmospheric airflows and the dispersion of airborne materials over complex
terrain. YSA developed, markets, and provides user support for the three-dimensional atmospheric
models HOTMAC and RAPTAD.
http://ysasoft.com/index.htm
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The AUSPLUME Model
Describes the AUSPLUME model developed in about 1986 by the Environmental Protection Authority of
Victoria, Australia. The AUSPLUME model is an adaptation of the U.S. EPA's ISCST model (Industrial
Source Complex Short Term model). Copies of the model can be purchased from the Victorian
Environmental Protection Authority.
http://www.epa.vic.gov.au/Air/EPA/pub391.asp
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The NAME dispersion model
The Nuclear Accident Model (NAME) is an essential part of the contingency plans for accidental
releases of radioactivity into the atmosphere: to provide early warning for emergency response and
to predict concentrations, depositions and dosages of radionuclides. Use of the model is
administered by the National Meteorological Centre of the United Kingdom's Meteorological Office at
Bracknall, Berkshire, UK.
http://www.met-office.gov.uk/research/nwp/publications/nwp_gazette/3rd96/name2.html
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The Disperse Model
A Gaussian air dispersion model available as a Microsoft Excel spreadsheet from P&I Design
Limited, a process design consultancy based in Stockton-on-Tees, England.
http://www.pidesign.co.uk/disperse.htm
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The QuickSLAB Model
Integrates the SLAB dispersion model with a mapping system of potential toxic release points, types
and quantities and exposed schools, homes, hospitals and businesses. It was developed for use by
National Border Technology Partnership Program (NBTPP), led by the U.S. Department Of Energy, in
addressing environmental and health concerns along the U.S.A and Mexico border.
http://www.border-tech.org/techaps/profiles/proair.htm
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The Oklahoma Dispersion Model
A simple model developed at the Oklahoma State University (in the USA) to assess the atmosphere's
ability to disperse gases and particulates released at near ground level. The focus of the model is
to evaluate downwind pollutant concentrations at distances of 1/4 mile to 2 miles (although greater
distances would apply).
http://agweather.mesonet.ou.edu/models/dispersion/default.html
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Petersen & Kade
A firm located in Hamburg, Germany which markets air dispersion modeling software that meets the
standards developed by: the Association of German Engineers (Verband Deutscher Ingenieure, or
simply VDI), and by Germany's Federal air pollution control regulations (known as TA Luft).
http://www.petersen-kade.com/
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The RITE Emergency Response System
The RITE Emergency Response is a collection of tools and weather models designed to assist
emergency response personnel in predicting the flow and dispersion of toxic releases into the
atmosphere. It incorporates 3D wind field and air dispersion models, developed by ARIA Technologies
of France, as well as site-specific topographic data.
http://www.ssesco.com/RITE.html
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The DEGADIS model
Dr. Tom Spicer and Dr. Jerry Havens of the University of Arkansas developed this model (for the
U.S. Coast Guard and the Gas Research Institute) primarily for simulating the dispersion of
denser-than-air flammable gases. The U.S. EPA later extended DEGADIS for dispersion modeling of
vertical jets. Implementation of DEGADIS on personal computers was sponsored by the Gas Research
Institute and the American Petroleum Institute.
http://www.ess.co.at/HITERM/MODELS/degadis.html
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The SLAB model
This software models the dispersion of dense gas releases from an evaporating pool, a horizontal
jet, a vertical jet, or an instantaneous volume source. The dispersion is calculated from the
conservation equations of mass, momentum, energy, and species. The conservation equations are
spatially averaged to treat the cloud as either a continuous plume, a transient puff, or a
combination of the two depending on the release duration. SLAB was developed by the USA's Lawrence
Livermore National Laboratory.
http://www.ess.co.at/HITERM/MODELS/slab.html
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The ALOHA Model
The Areal Location of Hazardous Atmospheres model (ALOHA) was developed by the USA's National
Oceanic and Atmospheric Administration (NOAA) for use in emergency responses to accidental releases
of neutrally buoyant or heavier-than-air gases.
http://www.nwn.noaa.gov/sites/hazmat/cameo/aloha.html
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The PlantSafe System
Developed by GeoSphere Systems located in Doylestown, Pennsylvania, USA, the PlantSafe System is a
rapid decision-support tool for managing a variety of critical situations including accidental
releases and similar plant emergencies. It includes an air dispersion model called QuikPlume.
http://www.geospheresystems.com/product/plantsafe.html
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KOVERS
Developed by the Swiss Federal Institute of Technology Zurich (more commonly known as ETHZ), KOVERS
is an Integrated Decision Support System (IDSS) software program. One of its applications is in
the investigation and/or evaluation of chemical or nuclear accidents. KOVERS includes a module for
air dispersion modeling in complex terrain.
http://www.kovers.ethz.ch/air_dispersion.htm
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A Dispersion Model for Coastal Zones and Complex Terrain
A description of the research program in the Mechanical Engineering Department at the University of
Hong Kong that led to the development of a comprehensive air dispersion model for use in coastal
zones and complex terrain such as exists in the Hong Kong area.
http://www.hku.hk/rss/res_proj/16/16.htm
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The TRACE Software
Developed by Safer Systems L.L.C. of Camarillo, California, the TRACE software includes: source
terms for time-varying and for steady flow releases; dispersion modeling for buoyant and for dense
plumes; and modeling fires and explosions such as Bleves, pool fires, jet fires and flash fires.
Technical support and training are available.
http://www.safersystem.com/Trace.htm
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The PHAST Software
Developed by Det Norske Veritas (DNV) of Oslo, Norway, the PHAST software includes: a unified
dispersion model (UDM) for various accidental releases; modeling of Bleves, jet fires, pool fires
and vapor cloud explosions; handling of multicomponent mixtures; and an online help system.
Upgrades and technical support are provided.
http://www.dnv.com/software/products/Risk_Management/phast.htm
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The OML Model
A Gaussian plume model developed by Denmark's National Environmental Research Institute (NERI) that
is recommended for environmental impact assessments of any planned new industrial sources. The
model can be used at distances up to 20 km for high or low sources, one or more point sources, or
area sources. It is not suitable for complex terrain and it requires input data on emissions and
meteorology on an hourly basis.
http://www.dmu.dk/AtmosphericEnvironment/oml/OMLlong.htm
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Lakes Environmental
Located in Ontario, Canada, this firm provides easy-to-use air dispersion and risk assessment
modeling software for Windows. Their air pollution dispersion modeling software includes:
ISC-AERMOD View, RMP View, SCREEN View, and SLAB View, all of which are U.S. EPA models adapted for
use with Windows. Training and technical support are also provided.
http://www.lakes-environmental.com/
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The Indic-Airviro System
The Swedish Meteorological and Hydrological Institute (SMHI) developed a dispersion modeling system
with modules for: receiving input data from monitoring stations; an emission data base; and
dispersion modeling. The dispersion module has a Gaussian model for small-scale applications, a
grid model for large-scale regional applications, a street canyon model for emission sources
surrounded by buildings, and a dense gas module.
http://www.indic-airviro.smhi.se/frames/index.html
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ImmProg2000 Dispersion Models
A set of dispersion models developed by AirInfo Gmbh, Switzerland to meet the recommendations of
the Swiss and German meteorological services. All of the models are Gaussian and they include: a
point-source model; a line-source model for vehicles on roads in open terrain and in city street
canyons; and an odor dispersion model.
http://www.airinfo.ch/IndexE.htm
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HGSYSTEM
HGSYSTEM is a suite of programs for assessing the dispersion of vapor from gas, liquid or two-phase
releases. HGSYSTEM was first developed to model the release of Hydrogen Fluoride and ideal gases,
and then extended to include multicomponent mixtures. The original development work was led by
Shell Research Ltd. as part of a consortium of 20 petroleum and chemical companies.
http://www.hgsystem.com/hgweb.html
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Online Version of Tox-Flam Model
Provides an online version of the Tox-Flam model for the use of any visitor to this website.
Tox-Flam is a Gaussian dispersion model for releases of inert buoyant pollutants into a finite
mixing layer of a user-specified height. The model was developed by Enviroware s.r.l.
http://www.enviroware.com/enviweb/models/online/toxflam/toxflam.htm
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The FLACS Explosion Model
FLACS (FLame ACceleration Simulator) is an advanced tool for the modeling of ventilation, gas
dispersion, vapour cloud explosions and blast in complex process areas. It was developed by GexCon
AS of Norway.
http://www.gexcon.com/index.php?src=flacs/flacs.html
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Environmental Software and Services GmbH
A software development and research company based in Austria who offer the AirWare integrated
system which includes: an emissions database; data management for inputs from external
meteorological and air quality monitors; the U.S. EPA's ISC2 and ISC3 short-term and long-term air
dispersion models; a geographical information system (GIS) module; and assessment and reporting
modules.
http://www.ess.co.at/AIRWARE/
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The DREAM Model
The Danish Rimpuff and Eulerian Accidental release Model (DREAM), developed by the National
Environmental Research Institute (NERI) of Denmark, is a high-resolution, three-dimensional tracer
model for short and large scale atmospheric transport, dispersion, and deposition (wet and dry) of
radioactive air pollution from a single strong source.
http://www.dmu.dk/AtmosphericEnvironment/WEPTEL/DREAM/
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Online Version of SCREEN3 Model
This site is maintained by Pacific Environmental Services (with nationwide offices in the USA) who
developed an online version of the U.S. EPA's SCREEN3 air dispersion model, which is freely
available for use by any visitor to the site.
http://www.eyeol.com/screen3/screen3.cfm
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ARIA Technologies
A French firm of environmental consultants and developers of air dispersion modeling software
ranging from small-scale local models to industrial models to regional models.
http://www.aria.fr/english/logiciels/index.html
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CAMEO
Computer-Aided Management of Emergency Operation (CAMEO) is a software package developed by NOAA
(U.S. National Oceanic and Atmospheric Administration) and U.S. EPA (Environmental Protection
Agency), for planning responses to chemical accidents. Includes the ALOHA (Areal Location of
Hazardous Atmospheres) dispersion model for neutrally buoyant or heavier-than-air gases.
http://response.restoration.noaa.gov/cameo/cameo.html
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EnviroModeling Ltd.
EnviroModeling Ltd. is based in Santiago, Chile and provides visual software for meteorological and
air quality needs: CalDESK - display and analysis software for the CALPUFF modeling system, and
CAMxDESK - graphical analysis software for the CAMx photochemical model.
http://www.enviromodeling.com
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Support Center for Regulatory Air Models
Extensive information from U.S. EPA on air pollution modeling software. Detailed description of
mathematical models, guidance and other technical papers.
http://www.epa.gov/scram001/
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Cambridge Environmental Research Consultants
Scientific consultants in the field of atmospheric dispersion located in Cambridge, England.. They
offer a range of air dispersion models including: ADMS 3 for dispersion of industrial emissions;
ADMS-SCREEN for initial screening studies of emission dispersion; and GASTAR for dispersion of
accidental dense gas releases.
http://www.cerc.co.uk/software/index.htm
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BREEZE Software and Meteorological Data Services
BREEZE markets the software developed by Trinity Consultants of Dallas, Texas, USA. They offer air
quality modeling software, meteorological data, training and support. Among the software packages
offered are those based on the US EPA's ISC and AERMOD suites. Software for continuous releases,
accidental toxic and flammable chemical releases, and explosion safety is available.
http://www.breeze-software.com
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BEE-Line Software
BEE-Line Software is located in Asheville, North Carolina, USA and markets air dispersion modeling
software with training and technical support. They specialize in creating user-intuitive versions
of EPA air dispersion models for application in the Windows environment.
http://beeline-software.com
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ATM-PRO
A distributor of air dispersion modeling and other environmental software located in
Nivelles,Belgium.
http://users.skynet.be/www.ATM-PRO.com
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Adair Geneva Project
The APPH Module (Air Pollution and Public Health) integrates three different models in the Aidair
Geneva system. The system was developed in Switzerland to draw maps of air pollution emissions from
point sources (power plants, industries) and/or area sources (automotive traffic). The three
dispersion models used are: a Gaussian model; a Lagrangian model; and a statistic model.
http://ecolu-info.unige.ch/recherche/EUREKA/AIDAIR/SPPA_english.html
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Aircraft Exhaust Plume Model
The model PARANOX (PArametrization of Aircraft emitted NOX) was developed by the Netherlands
Meteorological Institute to describe the chemical processes and dispersion of an aircraft exhaust
plume at cruising altitudes.
http://www.knmi.nl/~meijere/paranox.html
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Air Dispersion Modeling, Inc.
A firm in Oakton, Virginia selling a line of air pollution dispersion modeling software that
includes: ISC View, RMP View, SCREEN View, SLAB View and SLAB View 3D ... all of which are U.S. EPA
models adapted for use with Windows by Lakes Environmental.
http://www.air-dispersion-model.com
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