RT info:eu-repo/semantics/article
T1 Strong links between Saharan dust fluxes, monsoon strength, and North Atlantic climate during the last 5000 years
A1 Cruz Martínez, Juncal Altagracia
A1 McDermott, Frank
A1 Turrero, María J.
A1 Edwards, R. Lawrence
A1 Martín-Chivelet, Javier
A2 Geodinamica Externa
K1 Meteorología
K1 Saharan
K1 North Atlantic climate
K1 Monsoon
K1 Dust fluxes
K1 2502 Climatología
K1 2509 Meteorología
AB [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.
PB American Association for the Advancement of Science
LK https://hdl.handle.net/10612/21097
UL https://hdl.handle.net/10612/21097
NO 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
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 30-jun-2024