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Título
Strong links between Saharan dust fluxes, monsoon strength, and North Atlantic climate during the last 5000 years
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Science Advances
Número de la revista
26
Datos de la obra
Cruz, J. A., McDermott, F., Turrero, M. J., Lawrence Edwards, & Martín-Chivelet, J. (2021). Strong links between Saharan dust fluxes, monsoon strength, and North Atlantic climate during the last 5000 years. Science Advances, 7(26). https://doi.org/10.1126/SCIADV.ABE6102
Editor
American Association for the Advancement of Science
Fecha
2021
Résumé
[EN] Despite the multiple impacts of mineral aerosols on global and regional climate and the primary climatic control on atmospheric dust fluxes, dust-climate feedbacks remain poorly constrained, particularly at submillennial time scales, hampering regional and global climate models. We reconstruct Saharan dust fluxes over Western Europe for the last 5000 years, by means of speleothem strontium isotope ratios (87Sr/86Sr) and karst modeling. The record reveals a long-term increase in Saharan dust flux, consistent with progressive North Africa aridification and strengthening of Northern Hemisphere latitudinal climatic gradients. On shorter, centennial to millennial scales, it shows broad variations in dust fluxes, in tune with North Atlantic ocean-atmosphere patterns and with monsoonal variability. Dust fluxes rapidly increase before (and peaks at) Late Holocene multidecadal- to century-scale cold climate events, including those around 4200, 2800, and 1500 years before present, suggesting the operation of previously unknown strong dust-climate negative feedbacks preceding these episodes.
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SI
ID proyecto
- info:eu-repo/grant/Agreement/MINECO/Programa Estatal de Fomento de la Investigación Científica y Técnica de Excelencia/CGL2013-43257-R/ES/ CAMBIOS CLIMATICOS REGIONALES EN ESPAÑA, INFERIDOS DE REGISTROS MULTI-PROXY EN CUEVAS KARSTICAS: PATRONES, CAUSAS E IMPACTOS
- info:eu-repo/grant/Agreement/AEI/Programa Estatal de I+D+i Orientada a los Retos de la Sociedad /CGL2017-83287-R/ES/ CAMBIOS EN LA VARIABILIDAD CLIMATICA DEL ATLANTICO NORTE Y EL MEDITERRANEO: CONTRIBUCION DE REGISTROS HIDROCLIMATICOS DE CUEVAS KARSTICAS EN ESPAÑA
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