CANARINA:

Home

Air pollution

Noise pollution

Water pollution

E.M. pollution

Testimonials

Contact us

DEMOS

About us

Press

World

Clients

FAQ

DISPER:

DISPER

Solutions

Advantages

Order & price

Data I

Data II

Data III

Data IV

Average

Import

Commands

Algorithms I

Algorithms II

Algorithms III

Algorithms IV

Algorithms V

Emissions

Graphs I

Graphs II

Pollutants I

Pollutants II

Google maps

Models and GIS

Odor

Flare stacks

3D and 2D

Applications                

Models · GIS · software · air dispersion models

Calculation models. - This option is to decide the mathematical model that will be used in the calculation. We can choose between two different models: Briggs model (ISCST from Environmental Protection Agency, EPA, USA) and the European Environmental Agency model, Technical report No 11 – Guidance Report on preliminary assessment under EC air quality directives –(96/62/EC)1 – European Environmental Agency, EEA.  

Maximum concentration values for three different models: Briggs model of DISPER  (ISCST de la Environmental Protection Agency, EPA, USA), European Environmental Agency model of DISPER and a standard gaussian model.

GIS. - In this option it can be found all necessary to work with geographical information system. Coordinates of the origin: With this command we can choose the value for the origin of coordinates. It is initially in the left bottom corner of the program window. It is possible to work with geographic and Cartesian coordinates.
   

Reference points. - With this command we can decide the coordinate values of a point, that we previously know, in the map in order to have a referenced system. It is possible to work with geographical and Cartesian coordinates. After that, it will be possible to export the results to a GIS system.

Radius of curvature. - By means of this command, you can choose a value for the Earth radius. This radius can be slightly modified to adjust the reference system with the available data. The program considers the Earth as a perfect sphere with an exact radius. We know that this is not exactly true. This option is to correct this kind of effects.

Scale calculation. - With this command it is possible to estimate the map scale that corresponds to a background image, that has trees previously imported by the user. It is necessary to know the distance between to different points in the map. After introducing the distance data, you can click consecutively both points, and the scale will be automatically calculated.

air dispersion models

 air dispersion models