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18 papers
Smaller desert dust cooling effect estimated from analysis of dust size and abundance
Jasper F. Kok, David A. Ridley, Qing Zhou +6
Desert dust aerosols affect Earth's global energy balance through direct interactions with radiation, and through indirect interactions with clouds and ecosystems. But the magnitud…
Size-independent susceptibility to transport in aeolian saltation
Raleigh L. Martin, Jasper F. Kok
Natural wind-eroded soils contain a mixture of particle sizes. However, models for aeolian saltation are typically derived for sediment bed surfaces containing only a single partic…
Field measurements demonstrate distinct initiation and cessation thresholds governing aeolian sediment transport flux
Raleigh L. Martin, Jasper F. Kok
Wind-blown sand and dust models depend sensitively on the threshold wind stress. However, laboratory and numerical experiments suggest the coexistence of distinct "fluid" and "impa…
Wind-invariant saltation heights imply linear scaling of aeolian saltation flux with shear stress
Raleigh L. Martin, Jasper F. Kok
Wind-driven sand transport generates atmospheric dust, forms dunes, and sculpts landscapes. However, it remains unclear how the sand flux scales with wind speed, largely because mo…
High-frequency measurements of aeolian saltation flux: Field-based methodology and applications
Raleigh L. Martin, Jasper F. Kok, Chris H. Hugenholtz +3
Aeolian transport of sand and dust is driven by turbulent winds that fluctuate over a broad range of temporal and spatial scales. However, commonly used aeolian transport models do…
The fluctuation energy balance in non-suspended fluid-mediated particle transport
Thomas Pähtz, Orencio Durán, Tuan-Duc Ho +2
Here we compare two extreme regimes of non-suspended fluid-mediated particle transport, transport in light and heavy fluids ("saltation" and "bedload", respectively), regarding the…