Sources may be characterized as either stationary or mobile. Flue gas stacks are examples of stationary sources and busses are examples of mobile sources.
Sources may be characterized as either urban or rural because urban areas constitute a so-called heat island and the heat rising from an urban area causes the atmosphere above an urban area to be more turbulent than the atmosphere above a rural area.
Sources may be characterized by their elevation relative to the ground as either surface or ground-level, near surface or elevated sources.
Sources may also be characterized by their time duration:
puff or intermittent: short term sources (for example, many accidental emission releases are short term puffs)
continuous: a long term source (for example, most flue gas stack emissions are continuous)
Suscribirse a:
Enviar comentarios (Atom)
No hay comentarios:
Publicar un comentario