Research news on dust storms

Dust storms are atmospheric phenomena in which strong winds entrain and transport large quantities of loose, fine-grained mineral particles (primarily silt- and clay-sized) from arid or semi-arid surfaces into the boundary layer and sometimes higher troposphere. They are driven by pressure gradients associated with synoptic systems, convective outflows, or frontal passages, and are characterized by reduced visibility, intense horizontal fluxes of particulate matter, and strong size-selective sorting. Research on dust storms examines their emission thresholds, aerodynamic entrainment mechanisms (saltation and suspension), radiative and microphysical impacts on climate, nutrient and contaminant redistribution, and implications for atmospheric chemistry and human and ecosystem health.

Mars express captures dozens of dust devils in Mars valley

Dust devils are a regular feature on Mars. Just like those found on Earth, these mini whirlwinds form when parts of Mars are warmed by the sun, causing air above the surface to swirl upward and carry dust with it. But in ...

Climate change is altering Saharan dust—and Europe is downwind

In recent years, residents of Spain, France and the UK have looked up to see an eerie sight: deep orange sunrises and skies thick with a yellowish haze. These hazy skies often deposit "blood rain," rust-colored precipitation ...

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