CadnaA (Computer Aided Noise Abatement) is an environmental noise prevision software that can manage different kind of noise sources (punctual sources, typical for industrial plants; areal sources, as car parks, and linear sources as roads and railways).
The phonometric survey has a prime importance to acquire informations about features of noise propagation.
An emission factor is a value that represents the amount of pollutant released over time into the atmosphere from a specific anthropic or natural source.
These values may be expressed as weight of pollutant on unit of weight, volume, distance, or duration of the issuer.
CALINE is a stationary Gaussian dispersion model that calculates the concentrations of air pollution at receptor locations that are downwind, in relation of roads and highways located in relatively uncomplicated terrain. CALINE4 is the standard modeling program, used by Caltrans to assess impacts of dispersion of carbon monoxide emitted from transportation facilities.
AERMOD is a dispersion model recommended by the U.S. EPA (Environmental Protection Agency). It has been developed in 1991 by the AERMIC (American Meteorological Society / Environmental Protection Agency Regulatory Model Improvement Committee).
River2D is a 2-D finite element hydrodynamic model developed by University of Alberta. This software is specialized on fish-habitat suitability analysis, for specific species and particular flow conditions of the water body.
The model Dyresm-Caedym has been developed by the Centre of Water Research University of Western Australia, in order to simulate the main ecological characteristics in lakes and small reservoirs. The model is formed by two different modules: the Dyresm (Dynamic Reservoir Simulation Model) and the Caedym (Computational Aquatic Ecosystem Dynamics Models).
Streamflow analysis allows the description of watershed basins and river response at specific atmospheric precipitations; this analysis requires various kind of environmental data, such as a detailed time series of precipitations, geometric characteristic of river sections, detailed sub-basin delineation, etc.