Paleo±Dust: quantifying uncertainty in paleo-dust deposition across archive types

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dc.catalogadorjwg
dc.contributor.authorCosentino, Nicolás J.
dc.contributor.authorTorre, Gabriela
dc.contributor.authorLambert, Fabrice
dc.contributor.authorAlbani, Samuel
dc.contributor.authorDe Vleeschouwer, François
dc.contributor.authorBory, Aloys J. M.
dc.date.accessioned2024-03-15T13:15:07Z
dc.date.available2024-03-15T13:15:07Z
dc.date.issued2024
dc.description.abstractMineral dust aerosol concentrations in the atmosphere varied greatly on glacial–interglacial timescales. The greatest changes in global dust activity occurred in response to changes in orbital parameters (which affect dust emission intensity through glacial activity) and the lifetime of dust in the atmosphere (caused by changes in the global hydrological cycle). Long-term changes in the surface dust deposition rate are registered in geological archives such as loess, peats, lakes, marine sediments, and ice. Data provided by these archives are crucial for guiding simulations of dust and for better understanding the natural global dust cycle. However, the methods employed to derive paleo-dust deposition rates differ markedly between archives and are subject to different sources of uncertainty. Here, we present Paleo±Dust, an updated compilation of bulk and <10 µm paleo-dust deposition rates with quantitative 1σ uncertainties that are inter-comparable among archive types. Paleo±Dust incorporates a total of 285 pre-industrial Holocene (pi-HOL) and 209 Last Glacial Maximum (LGM) dust flux constraints from studies published until December 2022, including, for the first time, peat records. We also recalculate previously published dust fluxes to exclude data from the last deglaciation and thus obtain more representative constraints for the last pre-industrial interglacial and glacial end-member climate states. Based on Paleo±Dust, the global LGM:pi-HOL ratio of <10 µm dust deposition rates is 3.1 ± 0.7 (1σ). We expect Paleo±Dust to be of use for future paleoclimate dust studies and simulations using Earth system models of high to intermediate complexity.
dc.fuente.origenORCID
dc.identifier.doi10.5194/essd-16-941-2024
dc.identifier.urihttps://doi.org/10.5194/essd-16-941-2024
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/84449
dc.information.autorucInstituto de Geografía; Lambert , Fabrice; 0000-0002-2192-024X; 250043
dc.language.isoen
dc.nota.accesoContenido parcial
dc.pagina.final959
dc.pagina.inicio941
dc.revistaEarth System Science Data
dc.rightsacceso restringido
dc.subject.ddc550
dc.subject.deweyCiencias de la tierraes_ES
dc.titlePaleo±Dust: quantifying uncertainty in paleo-dust deposition across archive types
dc.typeartículo
dc.volumen16
sipa.codpersvinculados250043
sipa.trazabilidadORCID;2024-02-26
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