Particle.news

Download on the App Store

Global Catalog of 1,039 Martian Dust Devils Reveals Faster Near-Surface Winds

A Science Advances study uses dust‑devil motion in ESA orbiter images to map stronger, more widespread Martian winds near the ground.

Overview

  • Published Oct. 8, the study analyzed two decades of Mars Express and ExoMars Trace Gas Orbiter imagery to compile a 1,039‑event catalog.
  • Measured gusts reached about 158 km/h (≈98 mph) with typical speeds near 64 kph (40 mph), revising previous assumptions about surface winds.
  • Researchers exploited small timing offsets between image color channels and applied a neural network to detect dust devils and derive velocities.
  • Dust devils were found across the northern lowlands and southern highlands, with hotspots such as Amazonis Planitia and peak activity from late morning to early afternoon in spring and summer.
  • The open dataset is being used to improve climate models and is informing planning for future missions, including the 2030 ExoMars Rosalind Franklin landing.