This page should be read in conjunction with How Plume Plotter Works. It provides more details specific to the Poolbeg version of Plume Plotter.
Building measurements are taken from the building plans included in the EIS . There are two stacks but they have been combined into one because of the short distance between them (~5m).
This image shows the layout of the stack and buildings modelled. (North is at the top; numbers indicate the height of stacks and buildings; lighter shades of pink are used for higher buildings.)
All of these are taken from    except the stack location which is not stated but was calculated from aerial photographs:
The following values are used for albedo, Bowen ratio and roughness length. The roughness length is set to a low value because of the source of wind data used. (For historical plots and animations, a roughness length of 0.5m was used, as specified in ).
The emission rates of pollutants are taken from   . These are:
|Oxides of nitrogen||23.89 g|
|Particulates PM10||663.6 mg|
|Sulphur dioxide||5.309 g|
|Carbon monoxide||3.982 g|
|Hydrogen chloride||1.062 g|
|Hydrogen flouride||106.2 mg|
|Cadmium and thallium||6.636 mg|
|Other metals||53.09 mg|
|Dioxins and furans||6.636 ng|
The background levels of pollutants are taken from   . These are:
concentration per m3
|Oxides of nitrogen||27.6 μg|
|Particulates PM10||30 μg|
|Sulphur dioxide||14 μg|
|Carbon monoxide||510 μg|
|Hydrogen chloride||240 ng|
|Hydrogen flouride||10 ng|
|Cadmium and thallium||1 ng|
|Other metals||10 ng|
|Dioxins and furans||56 fg|
Wind speed, wind direction, temperature, pressure, and solar radiation are the latest values reported by one of several weather stations. If a value is not available from the first weather station it is obtained from the second, and so on. (Some weather stations do not measure everything needed.) The primary weather station is currently the Dublin Bay buoy, followed by and .
For historical plots, official weather data from the Dublin Airport weather station is used.
Upper air data is the latest reported by the Castor Bay upper air station.
1. Environmental Impact Statement (EIS) for the Dublin Waste to Energy facility. Chapter 8: Air Quality and Climate. 2006.
2. Environmental Impact Statement (EIS) for the Dublin Waste to Energy facility. Chapter 8: Air Quality and Climate (contd.). 2006.
3. Environmental Impact Statement (EIS) for the Dublin Waste to Energy facility. Appendix 8.1: Air Quality Study. 2006.