2026-06-07T23:45:55Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/84762023-08-25T21:18:21Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Cruz, J. A. author McDermott, Frank author Turrero Jiménez, María Jesús author Edwards, R. Lawrence author Martín Chivelet, Javier author 2021-06-25 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. 2375-2548 10.1126/sciadv.abe6102 https://hdl.handle.net/20.500.14352/8476 https://www.science.org/doi/10.1126/sciadv.abe6102 Strong links between Saharan dust fluxes, monsoon strength, and North Atlantic climate during the last 5000 years