Refine by
Air Dispersion Modeling Articles & Analysis
292 articles found
CALRoads View is an air dispersion modeling package that predicts near-roadway air quality impacts from moving and idling vehicles. It integrates three dispersion models: CALINE4, CAL3QHC, and CAL3QHCR. The original design of these models accounted for releases of PM, CO, and NO2 ...
Lakes Environmental Software developed Char View for the U.S. EPA to allow modelers to prepare site data, emissions, inventories, and air models quickly while avoiding common human errors in the ...
An environmental management authority in a Caribbean nation recently implemented the Ambient Quality Management Information System (AQMIS) to modernize and centralize its approach to air quality monitoring and management. Designed as a comprehensive platform, AQMIS integrates multiple data streams, analytics, and visualization tools to provide a holistic view of air quality. The system includes ...
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 and the CALPUFF View ...
CALRoads View includes three mobile source air dispersion models: CALINE4, CAL3QHC, and CAL3QHCR. These models are used for predicting air pollution concentrations of carbon monoxide (CO), nitrogen dioxide (NO2), particulate matter (PM), and other inert gases from idle or moving vehicles. The CAL3QHCR ...
High emissions during a period of ‘good’ weather can result in good air quality, and low emissions during periods of gentle winds (i.e. conditions not conducive to effective dispersion) can result in a build-up of pollution and poor air quality. ...
ByVortex
Most air dispersion models use simple text files for reading inputs and writing output data. ...
It enables operators and management staff to model odour impact and concentrations for up to 72 hours in advance to plan for periods of high risk. ...
When conducting an air dispersion modeling analysis, it is very important that the meteorological data quality is as high as possible. AERMET – the meteorological pre-processor for the AERMOD dispersion modeling system – contains internal options which can boost data quality by filling short gaps of ...
When conducting an air dispersion modeling analysis with the AERMOD modeling system, modelers may encounter situations where they want to validate or verify the model’s calculations. ...
Roads are the backbone to economic activities. They occupy a considerable area of our urban spaces and are primarily designed for vehicular traffic making them significant contributors to air pollution. The major air pollutants contributing to roadside air pollution are particulate matter (PM), NOx, CO and SOx. Major sources of these pollutants are from exhaust pipes of vehicles, wear & tear ...
BREEZE AERMOD provides modelers with the ability to import model objects from existing AERMOD related files. ...
The movement of COPCs in the environment can be a complex process so modelers can use the AERMOD model to conduct the air dispersion modeling. Then, the AERMOD input and output files from the air dispersion modeling analysis, along with chemical-specific fate and ...
A multi-agency Air Quality Cell (AQC) was first established in England in 2009 following the Buncefield Oil Storage Depot incident. ...
BREEZE is the market-leading air dispersion modeling software used by environmental professionals around the world Receptors are specific locations, set up in air quality dispersion models, where ambient concentration estimates or deposition values are needed. If the model is ...
In order to develop these custom real-time air dispersion modeling and forecasting systems, extensive knowledge on air dispersion modeling, meteorology, computer science, and web and database development is required. Two examples of these types of systems are: Real-Time Air ...
The following sections provide updates on the most important NAAQS and how you can plan for them today. Discusses SO2, air dispersion modeling and ambient monitoring, ozone, PM2.5. You don’t need to work in the air consulting arena for very long to see some big changes. I’ve been helping clients with ...
Most AERMOD dispersion modeling is conducted using meteorological data from a nearby airport. As long as the airport is reasonably representative of your source location, there is nothing wrong with that: airports are often a source of high quality data and located near major population centers and thus, major air pollution sources. But ...
Industrial sources, traffic, domestic heating and harbour emissions have been taken into account. Modelling system includes 3-dimensional meteorological models SWIFT-SURFPRO with the Lagrangian particle dispersion model SPRAY. The air emissions inventory was partially established using measured data, local ...
A dispersion model for continuous releases of pollutants in the atmospheric boundary layer is applied to study the influence on modelled concentrations of different estimates of the key micrometeorological variables that represent the dispersion processes. The modelling approach is based on the ...