‘Well, it depends if we are looking at an annual average or a peak. Usually a peak, or pollution episode, is because we are stuck in a meteorological condition of low boundary layer, no wind … and we are basically polluting ourselves. That is mostly local. But on a daily basis, on an annual level, we have wind and yes we are receiving pollution from our neighbour … Sometimes even the wind can circle around and bring our own pollution back to us, because we are a big emitter.’
Local VS global
