Buscar
Mostrando ítems 1-10 de 349
Paleo±Dust: quantifying uncertainty in paleo-dust deposition across archive types
(2024)
Mineral 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 ...
Present-Day Patagonian Dust Emissions: Combining Surface Visibility, Mass Flux, and Reanalysis Data
(AMER GEOPHYSICAL UNION, 2021)
The magnitude of the climatic forcing associated with mineral dust aerosols remains uncertain due in part to a lack of observations on dust sources. While modeling and satellite studies provide spatially extensive constraints, ...
Atmospheric dust dynamics in southern South America: A 14-year modern dust record in the loessic Pampean region
(Sage Publications Ltd, 2020-04)
Mineral aerosols profoundly impact global climate. Modeling of the dust cycle is the main tool used to gauge this effect. However, the scarcity of in situ modern dust flux measurements is the main reason why validation of ...
Late-glacial elevated dust deposition linked to westerly wind shifts in southern South America
(Nature Publishing Group, 2015-07)
Atmospheric dust loadings play a crucial role in the global climate system. Southern South America is a key dust source, however, dust deposition rates remain poorly quantified since the last glacial termination (~17 kyr ...
Modeling dust and soluble iron deposition to the South Atlantic Ocean
(American Geophysical Union, 2010-06)
The global chemical transport model GEOS-Chem, implemented with a dust-iron dissolution scheme, was used to analyze the magnitude and spatial distribution of mineral dust and soluble-iron (sol-Fe) deposition to the South ...
In and out of glacial extremes by way of dust climate feedbacks
(National Academy of Sciences, 2018)
Mineral dust aerosols cool Earth directly by scattering incoming solar radiation and indirectly by affecting clouds and biogeochemical cycles. Recent Earth history has featured quasi-100,000-y, glacial-interglacial climate ...
Dynamics and Characterization of Aeolian Dust Deposition from a Burned Shrubland at Chubut Coastal Patagonia in Argentina
(Springer, 2021-11)
The aim of this work is to evaluate the dynamics of dust deposition and characterize its elemental composition in case study at Chubut coastal Patagonia in Argentina after a shrubland fire. On 22 December 2016, a fire took ...
Dust archives within polar ice cores
(Elsevier, 2024)
Mineral dust aerosols are pivotal components of Earth's atmosphere and significantly influence the climate system. Investigating their impacts through ice core records offers unique insights into paleoclimate dynamics. ...
Elevated dust deposition in Tierra del Fuego (Chile) resulting from Neoglacial Darwin Cordillera glacier fluctuations
(John Wiley & Sons Ltd, 2016-10)
Atmospheric mineral dust is intrinsically linked with climate. Although dust flux variability on glacial–interglacial timescales is well documented, Holocene dust records remain scarce. To fill this gap, we conducted ...