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Calpuff Articles & Analysis
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In addition, the agency required the ability to conduct complex air quality studies using AERMOD and CALPUFF. Given the vast area and complex operational logistics, they required a tool that could streamline offshore operator participation in the mandated annual survey program. ...
With jet engines emitting CO2, NOx, PM2.5, UFPs, and ground support equipment (GSE) running on fossil fuels, the impact on human health, environmental sustainability, and regulatory compliance is a growing concern. Studies using AERMOD and CALPUFF models reveal that pollutants disperse unpredictably, affecting workers and nearby communities. ...
Lakes Software recently announced its acquisition of the CALPUFF modeling system from Exponent. Because Lakes’ CALPUFF View interface is well known throughout the modeling community, some modelers were not aware of the differences between this application and the stand-alone modeling system. This tip will explain the relationship between the modeling system ...
The CALPOST program is a powerful postprocessor used to average and report results based on data in the CALPUFF model output files. Because CALPOST’s operations are external to CALPUFF, modelers can perform many different operations without needing to re-run CALPUFF just to see additional averages or analyze impacts in a different way. ...
Most air dispersion models use simple text files for reading inputs and writing output data. To display these files, Lakes Environmental’s applications use the system’s default text editor. Users may prefer to use a different text editor to utilize different functionality or format data differently. To take advantage of these additional features, you can change the default text editor ...
Because these files are georeferenced, it is important that they are properly identified when importing them into applications like AERMOD View and CALPUFF View. When importing a shapefile, start by using the Import | Base Maps | Shapefile menu ...
One feature of the CALPUFF model is the ability to depict coastal interaction effects. Since the land surface can heat more rapidly than adjoining water, a Thermal Internal Boundary Layer (TIBL) can form and bring elevated source plumes close to the ground. ...
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 particular, the Pro and Pro Plus editions differ by the amount of post-processing capabilities available in 3D Analyst. ...
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. ...
The application of CALMET/CALPUFF modelling system is well known, and several validation tests were performed until now; however, most of them were based on experiments with a large compilation of surface and aloft meteorological measurements, not always available. Also, the use of an operational large smokestack as tracer source is not so usual. In this work, ...
For selected emission sources model calculations were conducted using CALPUFF dispersion model for neighbouring residential areas, which are exceptionally exposed to odours. This study presents results of modelling in local scale, for different meteorological scenarios, respectively for winter and summer seasons.Keywords: odour impact, wastewater treatment plant, WWTP, ...
This detailed emissions database was then introduced into the CALPUFF/CALMET modelling system coupled with the meso-scale meteorological model ALADIN.Keywords: Ljubljana basin, CALPUFF, ALADIN, traffic pollution, industry pollution, meso-scale meteorology, air quality, environmental pollution, PM 10, source determination, local scale, network emission model, ...
Mathematical modelling has been performed using CALPUFF model, driven by meteorological fields created by CALMET meteorological model. ...
EPA’s preferred long range (i.e., greater than 50km) transport air dispersion model CALPUFF was released on December 4, 2013. Status of the draft Guidance for PM2.5 Permit Modeling. ...
Odour impact assessment has become an important environmental issue. Different approaches can be used in order to evaluate the odour impact on receptors, and therefore to regulate it. Among the different possible regulation approaches, the use of dispersion modelling is suggested or required by several national or regional legislations. The wide diffusion of this approach is probably due to the ...
Some of the most exciting potential developments for modelers are the expected changes to the handling of low wind speeds for low level releases, a situation in which AERMOD has been shown to over predict concentrations. CALPUFF: The CALPUFF model is undergoing continuous development. From the modeler’s perspective, this is complicated by the existence ...
For classifications with different number of similar day clusters the air–quality directive limit and target values for SO2 are calculated from CALMET/CALPUFF model simulations performed for representative days. These results are compared with target and limit values assessed from results of simulations performed over the entire one year time period. Results show that especially ...
The CALPUFF modelling system was used to predict dispersion of contaminants emitted from industrial, naval and vehicular sources in the Strait of Messina area (Italy). ...
Then, the air quality modelling system RAMS–CALMET–CALPUFF was used to simulate local meteorology and atmospheric dispersion of pollutants emitted from the industrial sites and the highway. ...
The modelling system RAMS/CALMET/CALPUFF was used to simulate the atmospheric dispersion and deposition of dioxins emitted from industrial sources over the Province of Lecce (Italy). ...