This page should be read in conjunction with How Plume Plotter Works. It provides more details specific to the Parley version of Plume Plotter.
Building measurements are taken from [1].
The image below shows the layout of the stack and buildings modelled. North is at the top; colours and numbers indicate the height of the buildings and the stack:
These are taken from [1]:
The following values are used for albedo, Bowen ratio and roughness length. Roughness length is as specified in [1]:
The emission rates of pollutants are taken from [1]:
| Pollutant | Emission rate per second |
|---|---|
| Oxides of nitrogen | 1.172 g |
| Sulphur dioxide | 293 mg |
| Carbon monoxide | 488 mg |
| Particulates | 49 mg |
| Hydrogen chloride | 39 mg |
| TOC | 98 mg |
| Hydrogen flouride | 10 mg |
| Ammonia | 20 mg |
| Cadmium and Thallium | 195 μg |
| Mercury | 195 μg |
| Other metals | 2.929 mg |
| PaHs | 1.025 μg |
| Dioxins and furans | 586 pg |
| PCBs | 48.82 μg |
The background levels of pollutants are taken from [1]:
| Pollutant | Background concentration per m3 |
|---|---|
| Oxides of nitrogen | 18.27 μg |
| Sulphur dioxide | 1.53 μg |
| Carbon monoxide | 381 μg |
| Particulates | 14.45 μg |
| Hydrogen chloride | 710 ng |
| TOC | 720 ng |
| Hydrogen flouride | 2.35 μg |
| Ammonia | 7.14 μg |
| Cadmium and Thallium | 110 pg |
| Mercury | 2.43 ng |
| Other metals | 14.41 ng |
| PaHs | 390 pg |
| Dioxins and furans | 32.99 fg |
| PCBs | 128.9 pg |
Weather data is taken from METAR reports from a local airport: Bournemouth.
Upper air data is the latest reported by the Herstmonceux upper air station.