MEASUREMENT OF TRACE-METAL WET, DRY AND TOTAL ATMOSPHERIC FLUXES OVERTHE LIGURIAN SEA

An assessment of atmospheric inputs to the Ligurian Sea is reported he re, including both wet and dry deposition. In order to evaluate the re spective impact of the two contributions, a new sampling methodology w as deployed at Cap Ferrat, on the French Ligurian coast; A receptacle was filled,up with acidified water and acted as a trap for the total f allout. In parallel, rain water and aerosols were collected. Total flu xes: 0.18, 0.35, 6.0, 3.7, 8.6 and 220 mu g m(-2)d(-1) and wet duxes: 0.09, 0.09, 1.6, 1.9, 1.6 and 106 mu g m(-2)d(-1) were measured for Cd , Co, Cu, Ni, Pb and Zn, respectively. Using this database; dry fluxes were then calculated (0.09, 0.26, 4.4, 1.8, 7.0 and 114 mu g m(-2)d(- 1) for Cd, Co, Cu, Ni, Pb and Zn, respectively) and dry deposition vel ocities as well (0.4, 2.3, 1.2, 1.2, 0.2 and 4.4 cm s(-1) for Cd, Co, Cu, Ni, Pb and Zn, respectively). Yearly inputs to the Ligurian Sea we re also calculated for each metal. Copyright (C) 1996 Elsevier Science Ltd