AERMOD calpuff Articles
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Managing air quality during regulatory changes
This paper discusses the regulatory and technical issues associated with the revisions to the US EPA Guideline on Air Quality Models. The proposed guideline includes the models AERMOD, CALPUFF, and ISC-PRIME, all of which contain significant technical improvements over prior models. Differences in modelling requirements are appearing as regulatory agencies and industries use technically superior ...
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Procedures Used by U.S. Environmental Protection Agency (U.S. EPA) to Develop and Adopt Newer Dispersion Models
This paper summarises the management and procedural issues that led to the successful development of AERMOD and CALPUFF and how they will come to be approved regulatory models by the U.S. EPA in the next few months. The legal requirements for constantly updating models is contained in the 1977 Clean Air Act that requires U.S. EPA to publish a 'Modeling Guideline' and to hold a hearing every three ...
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Procedures used by the United States Environmental Protection Agency (US-EPA) to develop and adopt newer dispersion models
This paper summarises the management and procedural issues that led to the successful development of AERMOD and CALPUFF and how they will come to be approved regulatory models by the US-EPA in the next few months. The legal requirements for constantly updating models is contained in the 1977 Clean Air Act that requires the US-EPA to publish a "Modelling Guideline" and to hold a hearing ...
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Defining Shapefile Map Projections in Lakes Software Applications
A key feature of Lakes Software’s commercial products is the ability to easily import base maps in a wide variety of file formats. Supported formats include raster images (e.g., JPG, BMP, PNG, GIF, etc.), AutoCAD DXF, Digital Line Graphs (DLG), Shapefiles, and more. One of the supported formats - shapefiles - can be very useful because, in addition to geographic location data, they can ...
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`Procedures Used by U.S. EPA to Develop & Adopt Newer Dispersion Models,` presented at the Harmonization within Atmospheric Dispersion Modeling for Regulatory Purposes, Rouen, FR
Abstract This paper summarises the management and procedural issues that led to the successful development of AERMOD and CALPUFF and how they will come to be approved regulatory models by the U.S. EPA in the next few months. The legal requirements for constantly updating models is contained in the 1977 Clean Air Act that requires U.S. EPA to publish a "Modeling Guideline" and to hold a hearing ...
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Dispersion Notes: U.S. EPA Proposes Changes to AERMOD and CALPUFF
Last week, BREEZE staff made the trip to U.S. EPA’s offices in North Carolina for their 11th Modeling Conference to get the latest updates on upcoming changes to the AERMOD system, CALPUFF, and other issues. The highlights include: Relief is coming to U.S. AERMOD users dealing with overprediction of concentrations in low wind speed hours: U.S. EPA plans to make the LOWWIND3 and ADJ_U* ...
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Performance of AERMOD vs. CALPUFF on Fugitive Emission Sources in the Nearfield
Abstract On November 9, 2006, the AMS/U.S. EPA Regulatory Model (AERMOD) replaced the Industrial Source Complex (ISC) model as the U.S. EPA-approved regulatory model for analyses in the nearfield (less than 50 kilometers from a site). The CALPUFF modeling system, another U.S. EPA-approved model typically regarded as a long-range transport model, can also be utilized in the nearfield on a ...
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Modeling Tip: Creating Animations in BREEZE 3D Analyst
The powerful post-processor, BREEZE 3D Analyst, enables you to analyze and visualize data in multiple formats to help you better understand, interpret, and summarize your modeling results. To best assist our users, a complimentary license of BREEZE 3D Analyst is included with the purchase of BREEZE AERMOD/ISC Pro or Pro Plus, BREEZE Incident Analyst, and BREEZE CALPUFF. For BREEZE AERMOD/ISC in ...
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BREEZE Met Data Facilitates Long Range Dispersion Modeling
U.S. EPA requires that facilities located within 200 km of Class I areas or others with visibility degradation issues conduct long-range dispersion modeling studies. CALPUFF, an EPA-approved model for long-range transport modeling, is a non-Gaussian, non-steady state, puff model that operates in a Lagrangian framework, unlike the Eulerian approach used by Gaussian dispersion models. The extensive ...
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Keeping the Increasing Complexity of Air Dispersion Modeling in Check
Driven by advances in scientific knowledge, tightening and constantly changing regulations, and higher-resolution raw data, environmental modeling is demanding more and more from EH&S professionals and their computers. AERMOD run times for large projects are measured in days rather than minutes and terrain data file sizes routinely exceed 100 MB. Modelers can increase productivity and keep ...
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