Scientists map Martian winds using 1,039 dust devils, revealing strong near-surface winds

Martian dust devils race across the Red Planet at speeds reaching 158 kilometers per hour, far faster than scientists previously measured using ground-based rovers.

Researchers led by Valentin Bickel of the University of Bern catalogued over 1,000 of these tornado-like whirlwinds using an ingenious method. They turned a technical flaw into a scientific advantage, exploiting "color offsets" from two orbiting spacecraft that occur when viewing moving objects.

The European Space Agency's Mars Express and ExoMars Trace Gas Orbiter weren't designed to track dust devils. But delays in their imaging systems create distinctive color shifts when capturing these spinning columns of dust and debris.

Bickel's team mapped 1,039 dust devils and tracked the motion of 373, creating the first comprehensive wind speed measurements of these phenomena from orbit. The data reveals wind patterns that ground rovers like Perseverance simply cannot detect from their limited vantage points.

This research transforms our understanding of Martian meteorology. The detailed wind maps could prove essential for planning future missions to Mars, helping engineers design landing systems and equipment that can withstand the planet's surprisingly dynamic atmosphere.

The findings show Mars remains full of surprises, even for phenomena scientists have observed for years.