1. Department of Environmental Sciences, University of Venice, Ca' Foscari, I-30123 Venice, Italy, Centre for Studies on Environmental Chemistry and Technology-CNR, University of Venice, Ca' Foscari, I-30123 Venice, Italy, Laboratoire de Glaciologie et Géophysique de l'Environnement du C.N.R.S., 54 rue Molière, Boîte Postale 96, 38402 Saint Martin d'Hères, France, Polar Sciences Laboratory, Korean Ocean Research and Development Institute, Ansan, P.O Box 29, Seoul, 425-600, Korea, Institut des Sciences et...