engleski

Atmospheric transport to the GAW regional station at Zavižan and related precipitation chemistry

A study on the connection between the state of the atmosphere, as represented by cluster-mean trajectories, and the chemical composition at the Croatian GAW regional station of Zavižan is presented. The trajectory cluster analysis had been done on the basis of daily backward trajectories calculated for 1996 using the HYSPLIT-4 trajectory model. The seasonal cluster analysis indicates four major flow directions in the region: a) fast W-NW flow, 2) stzrong SW flow, 3) N-NE flow, 4) very short trajectories of different directions. The major transport route that brings higher levels of acidifying compounds to the region is drom the NW sector. The most polluted precipitation has been observed in spring with precipitation connected with three cluster means: NNW, SE and E.

pollution; air trajectories; cluster analysis

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