This page should be read in conjunction with How Plume Plotter Works. It provides more details specific to the Barry version of Plume Plotter.
Building measurements are taken from .
This image shows the layout of the stack and buildings modelled:
All of these are taken from  except the stack location which is taken from :
The following values are used for albedo, Bowen ratio and roughness length. None of these are specified in  or :
The emission rates of pollutants are taken from . These are:
|Oxides of nitrogen||4.32 g|
|Hydrogen chloride||216 mg|
|Hydrogen flouride||21.6 mg|
|Carbon monoxide||1.08 g|
|Sulphur dioxide||1.08 g|
|Cadmium and thallium||1.08 mg|
|Other metals||10.8 mg|
|Dioxins and furans||2.16 ng|
The background levels of pollutants are taken from . These are:
concentration per m3
|Oxides of nitrogen||20 μg|
|Hydrogen chloride||240 ng|
|Hydrogen flouride||500 ng|
|Carbon monoxide||140 μg|
|Sulphur dioxide||2.2 μg|
|Cadmium and thallium||300 pg|
|Other metals||54.49 ng|
|Dioxins and furans||28.8 fg|
Wind speed, wind direction, temperature, pressure, and solar radiation are the latest values reported by one of two weather stations. If a value is not available from the primary weather station it is obtained from the secondary weather station. (Some weather stations do not measure solar radiation at all.) The primary weather station is and the secondary weather station is .
Upper air data is the latest reported by the Camborne upper air station.
1. Proposed Wood Gasification Facility -- Woodham Road Barry -- Air Quality Assessment. Entran Ltd. 29/04/2016.
2. Stack Height Assessment for a 10 MWe Wood Gasification Facility at Barry Docks, Barry Island for Sunrise Renewables (Barry). Stopford Energy and Environment. 11/09/2014. Document filename "Appendix 2 - Air Emissions Analysis (2014).pdf".