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Abstract
This study provides a detailed description of the sources, transport, dispersion, and deposition of two major dust events originating from the high‐altitude subtropical Puna‐Altiplano Plateau (15–26°S; 65–69°W) in South America. A long and severe drought provided the right conditions for the onset of both events in July 2009 and 2010. Dust was transported SE and deposited over the Pampas region and was observed to continue to the Atlantic Ocean. Dust [ver mas...]
dc.contributor.authorGaiero, Diego Marcelo
dc.contributor.authorSimonella, Lucio Esteban
dc.contributor.authorGassó, Santiago
dc.contributor.authorGili, Stefania
dc.contributor.authorStein, A.F.
dc.contributor.authorSosa, P.
dc.contributor.authorBecchio, Raul Alberto
dc.contributor.authorArce, Juan Mateo
dc.contributor.authorMarelli, Hugo Juan
dc.date.accessioned2018-08-24T14:32:25Z
dc.date.available2018-08-24T14:32:25Z
dc.date.issued2013-05
dc.identifier.issn2169-897X
dc.identifier.issn2169-8996
dc.identifier.otherhttps://doi.org/10.1002/jgrd.50036
dc.identifier.urihttps://agupubs.pericles-prod.literatumonline.com/doi/10.1002/jgrd.50036
dc.identifier.urihttp://hdl.handle.net/20.500.12123/3178
dc.description.abstractThis study provides a detailed description of the sources, transport, dispersion, and deposition of two major dust events originating from the high‐altitude subtropical Puna‐Altiplano Plateau (15–26°S; 65–69°W) in South America. A long and severe drought provided the right conditions for the onset of both events in July 2009 and 2010. Dust was transported SE and deposited over the Pampas region and was observed to continue to the Atlantic Ocean. Dust monitoring stations located downwind recorded both events, and samples were characterized through chemical and textural analysis. Through a combination of meteorological data and satellite observations (CALIPSO and MODIS detectors), we estimate the emission flux for the 2010 event. This estimate was used to constrain the Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) transport model and simulate the dust event. Both satellite imagery and model results agree in the location and extension of the dust cloud. CALIPSO detected dust between ~6000 and ~8500 m a.s.l., which remained at this height during most of its trajectory. The dust cloud mixed with a strong convective system in the region, and the associated precipitation brought down significant amounts of dust to the ground. Dust particle size analysis for both events indicates that near the sources dust samples show median modes of 12.4–14.1 µm, similar to modes observed 1300 km away. Chemical composition of sediments from potential dust sources shows distinct signatures within the Puna‐Altiplano Plateau, the Puna sector being clearly different from the Altiplano area. In addition, both sources are markedly different from the Patagonian chemical fingerprint. These results have important implications to improve the interpretation of paleo‐environmental archives preserved on the Argentine loess, Antarctic ice cores, and Southern Ocean marine sediments.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.rightsinfo:eu-repo/semantics/openAccesses_AR
dc.sourceJournal of Geophysical Research: Atmospheres 118 (9) : 3817-3831 (May 2013)es_AR
dc.subjectClimaes_AR
dc.subjectClimateeng
dc.subjectImágenes por Satéliteses_AR
dc.subjectSatellite Imageryeng
dc.subjectTormentas de Polvoes_AR
dc.subjectDust Stormseng
dc.subjectPaleoclimatologíaes_AR
dc.subjectPalaeoclimatologyeng
dc.subjectMeteorologíaes_AR
dc.subjectMeteorologyeng
dc.subject.otherRegión Punaes_AR
dc.subject.otherDesierto del Altiplano
dc.subject.otherAmérica del Sur
dc.titleGround/satellite observations and atmospheric modeling of dust storms originating in the high Puna‐Altiplano deserts (South America): Implications for the interpretation of paleo‐climatic archiveses_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.description.origenEEA Marcos Juárezes_AR
dc.description.filFil: Gaiero, Diego Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico - CONICET - Córdoba. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentinaes_AR
dc.description.filFil: Simonella, Lucio Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico - CONICET - Córdoba. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentinaes_AR
dc.description.filFil: Gassó, Santiago. Morgan State University. GESTAR; Estados Unidoses_AR
dc.description.filFil: Gili, Stefania. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnológico - CONICET - Córdoba. Centro de Investigaciones en Ciencias de la Tierra; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentinaes_AR
dc.description.filFil: Stein, A.F. National Oceanic and Atmospheric Administration. Air Resources Laboratory; Estados Unidoses_AR
dc.description.filFil: Sosa, P. Universidad Nacional de Salta; Argentinaes_AR
dc.description.filFil: Becchio, Raul Alberto. Universidad Nacional de Salta; Argentinaes_AR
dc.description.filFil: Arce, Juan Mateo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Marcos Juárez; Argentinaes_AR
dc.description.filFil: Marelli, Hugo Juan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Marcos Juárez; Argentinaes_AR
dc.subtypecientifico


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