INTERANNUAL VARIABILITY OF SOME TRACE-ELEMENTS AND SURFACE AEROSOL

After correcting for seasonal variations and long-term (linear or quad ratic) trends, the residual interannual anomalies (variations) of the trace elements and surface aerosol show periodicities in the Quasi-bie nnial Oscillation (2-3 years) and 3-5 years range. Quasi-biennial Osci llations (QBO) of some elements match with the QBO of equatorial 50-hP a wind, but for some others, matching is not good. For some elements, matching with Southern Oscillation index is good. The relationship is probably through the sea-surface temperature changes, which affect the role of the ocean as a source/sink for these trace elements. Interact ion between equatorial wind QBO and extratropical phenomena should als o be involved.