Abstract
H2S is a most important biogenic sulfur compound with regard to the atmospheric sulfur cycle. Our present knowledge of the spatial and temporal distribution of this trace gas is rather incomplete owing to unreliable analytical methods. Therefore, a new method for the analysis of H2S in the μg-range was applied. This paper deals with the results of ground- and aircraft measurements of H2S in unpolluted air over swamps and tidal flats. Based on the measured vertical distributions a removal coefficient of 2.3×10−5 sec−1 and an average lifetime of 12 hours were calculated. Some conclusions of the contribution of H2S to the atmospheric sulfur budget are added.
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