多源空气质量模拟器(RAM1.0)

* Versatile multiple source air quality Guassian-plume dispersion software; model based on revised RAM-EPA with easy-to-use GUI, self-containedmap support tool,  visualization and analysis kit as well as help system, used in various Windows-based microcomputers.

* User-friendly powerful map support tool for pre- and post-processing, including basic color inspection,

map-scale determination, point- and area-source orientations, 4 types of selected point-source symbols with 3 sizes, geometrical date auto-inserter to tables, receptor dispose, digital map background, map enlargement, shrink, storage & printing.

* Up-to-date visualizations for computational conditions and calculated results, including 3D renditions for source locations and emission rates, 6 types of 3D concentration distributions (black and color receptors' plots, black and color wire plots, surface plot and surface-wire plot), 3 types of 2D contouring (homochromatic and color contour lines, color filled image), 2 methods for setting values of contour lines, displaying labeled coordinate axes with titles and ticks, selections of vane, grid lines and borders, 3D graphics rotation. The total node number of concentration field ≤ 9000. By using mouse, buttons and a few of keys, users can easily obtain various graphics.

*Self-supplied results' analyzers, including point coordinates and model-calculated concentration displays on 2D and 3D graphics, and maximum, minimum and mean concentration displays for local area on 2D graphics (see image map of SO₂ and corresponding instruction).

*Convenient data input through dialog boxes and digital map; input data display, revision, print and storage; output results' display, printing and storage.  

*Easily simulating and analyzing a short-term air pollutant dispersion of inactive pollutants (such as SO₂, particulates ...), caused by up to 250 point sources and 100 area sources in the urban and rural zones.

Uses: Regional air quality analysis and evaluation for the effects of multiple source emissions, both by buoyancy and momentum, in level or gently rolling terrain for a period from one hour to one year. Teaching software for courses relative to ambient air quality modeling and pollutant transport process.

Relative academic journal paper: ‘RAM 1.0 Software for Gaussian-Plume Multiple Source Air Quality Simulation’, American Journal of Applied Sciences 2(2): 533-538, 2005. (download)

Multiple Source Air Quality Modeler and Analyzer (RAM 1.0, RAM - Regulatory Air Model) is a versatile Gaussian-plume dispersion model, developed originally by EPA (EPA - U. S. Environmental Protection Agency), with the support of RAM 1.0 Graphical User Interface (GUI), Map Support Tool, point-by-point analyzer and regional analyzer as well as help system. The software can be easily used in various Windows-based microcomputers. RAM 1.0 can provide various refined 2D and 3D graphics both for emission sources and model-calculated results. The software also can display the X- and Y-coordinates and corresponding concentrations, either at given points by mouse move or in specified local region by drawing tools, both for generated 2D and 3D figures. The graphical visualization functions of RAM 1.0 greatly help user to analyze and evaluate the model-calculated concentration fields.

Following figures present a part of calculated results from one example (concentrations of contaminants in mg/m³, receptors’ height = 0 m).

a. Point- and area-sourcepositions b. SO₂ emission rates of point- and area-sources c. Particle emissionrates of point-sources d.  Concentration of SO₂ caused by all sources for the 1^st-hour

e. Surface-wire plot of SO₂ caused by all sources for the 1^st-hour f.  Surface plot of SO₂ caused by all sources for the 2^nd-hour g. Surface-wire plot of SO₂ caused by all sources for the 2^nd-hour h. Surface plot of SO₂ caused by all area-sources for the 2^nd-hour

i. Surface-wire plot of SO₂ caused by all sources for 2 hours' average  j. Color contour lines of SO₂ caused by all sources for the 2^nd-hour k. Google map and color contourlines of SO₂ caused by all sources for the 1^st-hour l. Image map of SO₂ caused by all sources for the 1^st-hour,  with a local region (red line square), specified by the user through the drawing tools provided by the software. The position of this region and corresponding characteristic concentrations (maximum, minimum and mean) can be instantly displayed on table.