A Three Dimensional Hemispheric Air Pollution Model Used for the Arctic

There have been a considerably scientific interest of the air pollution in the Arctic. The reason for this is that the arctic area is rather sensitive to the pollution, and the pollution there is a finger print of the air pollution for the whole Northern Hemisphere. In the last 20 years several groups have done measurements in the Arctic (see, for example, AGASP, 1984; Arctic Air Chemistry, 1985, 1989, 1993). All these measurements shows that the air pollution have a great seasonally variation with relative high concentrations during the winter and the early spring with a maximum normally in march and very low concentrations during the summer. The air pollution is also characterized by an episodic nature, because the origin of the pollution is only due to the long-range transport, and a deep vertical distribution, because of the very cold and stable Arctic atmosphere.