Table 2 Parameters and modalities tested to calibrate the GIS-based metric

Geographical

Impact zone of dioxin industrial emissions

Circular buffer with 3, 5 and 10 km radius

Residence-to-source distance decline

\( \frac{1}{d};\frac{1}{d^{1.5}};\frac{1}{d^2};\frac{1}{d^3};{e}^d;\frac{e^d}{d};{e}^{-d}.d \)

Meteorological

Wind frequency

Equal wind rose segment sizes (CADDs) of 90°, 30°, and 10°± Weighted contribution of adjacent segments

Wind speed

Variation of the residence to source distance decline pattern according to the hourly wind speed

Technical

Exhaust smoke velocity

\( \frac{1}{v} \) ; \( \frac{1}{v^2} \)

Stack height

\( \frac{1}{h};\frac{1}{h^{0.5}};\frac{1}{h^2} \)