Influence of atmospherically transported aerosols on surface ocean water composition.

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Abstract
Twelve metals, 210Pb 239+240Pu were measured over 1 yr in atmospheric aerosols collected at La Jolla, California, USA and Ensenada, Baja California, Mexico. Substantial amounts of the metals in the solid phases are leachable into sea water. During the winter months at La Jolla, Pb, Ni and 210Pb had higher atmospheric concentrations than at other times, suggesting local sources during this period of temperature inversion. Pb and Ni appear to have significant anthropogenic components. Overall, the concentrations of the metals and radionuclides in aerosols are similar to those in other sites of the northern hemisphere. For the southern California coastal region, the atmospheric fluxes of aerosols to the marine environment may govern the metal concentrations in surface waters. These fluxes do not account for the accumulation of metals in the coastal sediments.

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