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Modulation of Saharan dust export by the North African dipole
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Campo DC | Valor | Lengua/Idioma |
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dc.contributor.author | Rodríguez González, Sergio | - |
dc.contributor.author | Cuevas Agulló, Emilio | - |
dc.contributor.author | Prospero, Joseph M. | - |
dc.contributor.author | Alastuey, Andrés | - |
dc.contributor.author | Querol, Xavier | - |
dc.contributor.author | López Solano, Javier | - |
dc.contributor.author | García Álvarez, María Isabel | - |
dc.contributor.author | Alonso Pérez, Silvia | - |
dc.date.accessioned | 2015-12-30T10:08:46Z | - |
dc.date.available | 2015-12-30T10:08:46Z | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | Atmospheric Chemistry and Physics. 2015, 15(13), p. 7471-7486 | es_ES |
dc.identifier.issn | 1680-7316 | - |
dc.identifier.issn | 1680-7324 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11765/507 | - |
dc.description.abstract | We have studied the relationship between the long-term interannual variability in large-scale meteorology in western North Africa – the largest and most active dust source worldwide – and Saharan dust export in summer, when enhanced dust mobilization in the hyper-arid Sahara results in maximum dust impacts throughout the North Atlantic. We address this issue by analyzing 28 years (1987–2014) of summer averaged dust concentrations at the high-altitude Izaña observatory (~ 2400 m a.s.l.) on Tenerife, and satellite and meteorological reanalysis data. The summer meteorological scenario in North Africa (aloft 850 hPa) is characterized by a high over the the subtropical Sahara and a low over the tropics linked to the monsoon. We measured the variability of this high–low dipole-like pattern in terms of the North African dipole intensity (NAFDI): the difference of geopotential height anomalies averaged over the subtropics (30–32° N, Morocco) and the tropics (10–13° N, Bamako region) close to the Atlantic coast (at 5–8° W). We focused on the 700 hPa standard level due to dust export off the coast of North Africa tending to occur between 1 and 5 km a.s.l. Variability in the NAFDI is associated with displacements of the North African anticyclone over the Sahara and this has implications for wind and dust export. | es_ES |
dc.description.sponsorship | The Izaña GAW program is funded by AEMET and by the Minister of Economy and Competitiveness of Spain (POLLINDUST, CGL2011-26259). J. M. Prospero’s research is supported by NSF grant AGS-0962256. | - |
dc.format | application/pdf | - |
dc.language.iso | eng | es_ES |
dc.publisher | European Geosciences Union | es_ES |
dc.subject | Variabilidad climática | es_ES |
dc.subject | Distribución de partículas de polvo | es_ES |
dc.subject | Climate variability | es_ES |
dc.subject | Distribution of dust | es_ES |
dc.title | Modulation of Saharan dust export by the North African dipole | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.relation.publisherversion | https://dx.doi.org/10.5194/acp-15-7471-2015 | es_ES |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Colecciones: | Artículos científicos 2015-2018 |
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