On transport of sulphur over the North Atlantic.

Type: Report
Series: RMK 6
Author: Nyberg, A.


The sulphur content in the precipitation collected on ocean weather ships in the North Atlantic has been analysed. From these data and from results of rajectory computations it is concluded that considerable amounts of anthropogenic sulphur are transported from North America towards Europe. The dry deposition of sulphur over the Atlantic, except close to the emitting sources, must be very small. The amount of sulphur in the precipitation from air coming from the high pressure area near the Azores is very small and thus one can say that the normal value of natural sulphur in precipitation cannot be much larger than 0.1 mg/1.