This page should be read in conjunction with How Plume Plotter Works. It provides more details specific to the Corby (Gretton) 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:
All of these are taken from [1]:
The following values are used for albedo, Bowen ratio and roughness length. Albedo and roughness length are as specified in [1]:
The emission rates of pollutants are taken from [1].
| Pollutant | Emission rate per second |
|---|---|
| Oxides of nitrogen | 5.2 g |
| Particulates | 200 mg |
| Sulphur dioxide | 1.3 g |
| Carbon monoxide | 2.2 g |
| TOC | 400 mg |
| Hydrogen chloride | 300 mg |
| Hydrogen flouride | 40 mg |
| Cadmium and thallium | 900 μg |
| Mercury | 400 μg |
| Other metals | 10 mg |
| Ammonia | 400 mg |
| Dioxins and furans | 2.6 ng |
| PAHs | 6.5 μg |
| PCB | 3.5 ng |
The background levels of pollutants are taken from [1]. These are:
| Pollutant | Background concentration per m3 |
|---|---|
| Oxides of nitrogen | 14.9 μg |
| Particulates | 13.1 μg |
| Sulphur dioxide | 2.2 μg |
| Carbon monoxide | 246 μg |
| TOC | 540 ng |
| Hydrogen chloride | 210 ng |
| Hydrogen flouride | N/A |
| Cadmium and thallium | 100 pg |
| Mercury | N/A |
| Other metals | 14.8 ng |
| Ammonia | 1.95 μg |
| Dioxins and furans | 10.9 fg |
| PAHs | 150 pg |
| PCB | N/A |
Weather data is taken from METAR reports from a local airport: Wittering RAF.
Upper air data is the latest reported by the Nottingham upper air station.