Inferring episodic atmospheric iron fluxes in the Western South Atlantic |
| |
| Authors: | Heitor Evangelista Juan Maldonado Elaine A dos Santos Ricardo HM Godoi Carlos AE Garcia Virginia MT Garcia Erling Jonhson Kenya Dias da Cunha Carlos Barros Leite René Van Grieken Katleen Van Meel Yaroslava Makarovska Diego M Gaiero |
| |
| Institution: | 1. Universidade do Estado do Rio de Janeiro/LARAMG. Pav. HLC. Subsolo, Rua São Francisco Xavier, 524. Maracanã, Rio de Janeiro – RJ 20550-013, Brazil;2. Universidade Federal Fluminense/Departamento de Geoquímica Ambiental, Outeiro São João Batista, s/n° – Centro – Niterói, RJ 24020-150, Brazil;3. Environmental Engineering Department, Federal University of Paraná/UFPR, P.O. Box 19011, 81531-990 Curitiba, PR, Brazil;4. Universidade Federal do Rio Grande/Laboratório de Oceanografia Física, Av. Itália km 8, Rio Grande, RS 96201-900, Brazil;5. Universidad Magallañes/Instituto de Física, Cassila 113-D, Punta Arenas, Chile;6. PUC-RIO, Laboratório van de Graaff, Rua Marques de São Vicente, 225, Rio de Janeiro – RJ 22451-041, Brazil;7. IRD/CNEN. Av, Slavador Allende s/n, Rio de Janeiro – RJ 22780-160, Brazil;8. University of Antwerp/Department of Chemistry/Micro and Trace Analysis Centre, 2610 Antwerp, Belgium;9. CIGeS, FCEFyN, Universidad Nacional de Cordoba, Avda. Velez Sarsfield 1611, X50166CA Cordoba, Argentina;1. Laboratoire des Sciences du Climat et de l’Environnement (LSCE), France;2. School of Environmental Sciences, University of Liverpool, United Kingdom;3. GEOMAR Helmholtz Centre for Ocean Research, Germany;4. Royal Netherlands Meteorological Institute (KNMI), De Bilt, Netherlands;1. Université Pierre et Marie Curie, UMR 7093, Laboratoire d’Océanographie de Villefranche, F-06230 Villefranche-sur-Mer, France;2. Centre National de la Recherche Scientifique (CNRS), UMR 7093, Laboratoire d’Océanographie de Villefranche, Villefranche-sur-Mer, France;3. Geosciences Environment Toulouse (GET), Midi-Pyrenees Observatory (OMP), 14 Avenue Edouard Belin, 31400 Toulouse, France;4. Centre National de la Recherche Scientifique (CNRS), Laboratoire d’Aérologie, 14 Avenue Edouard Belin, 31400 Toulouse, France;5. International Atomic Energy Agency, Environment Laboratories, 4 Quai Antoine 1er, MC 98000, Monaco |
| |
| Abstract: | Iron (Fe) and other trace elements such as Zn, Mn, Ni and Cu are known as key-factors in marine biogeochemical cycles. It is believed that ocean primary productivity blooms in iron deficient regions can be triggered by iron in aeolian dust. Up to now, scarce aerosol elemental composition, based on measurements over sea at the Western South Atlantic (WSA), exist. An association between the Patagonian semi-desert dust/Fe and chlorophyll-a variability at the Argentinean continental shelf is essentially inferred from models. We present here experimental data of Fe enriched aerosols over the WSA between latitudes 22°S–62°S, during 4 oceanographic campaigns between 2002 and 2005. These data allowed inferring the atmospheric Fe flux onto different latitudinal bands which varied from 30.4 to 1688 nmolFe m?2 day?1 (October 29th–November 15th, 2003); 5.83–1586 nmolFe m?2 day?1 (February 15th–March 6th, 2004) and 4.73–586 nmolFe m?2 day?1(October 21st–November 5th, 2005). |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
