Volume 14 Issue 2, February 2021

Volume 14 Issue 2

Carbon monoxide distribution in the Martian atmosphere

The CO mixing ratio in Mars’s atmosphere increases towards the poles because of downward transport of CO from the upper atmosphere, according to an analysis of data from the ExoMars Trace Gas Orbiter. This image shows an area in Melas Chasma (Valles Marineris, Mars) taken by the Colour and Stereo Surface Imaging System on-board the European Space Agency’s Trace Gas Orbiter mission. The colour composite has been manipulated to emphasize the spectral diversity of landforms and sediments on the surface.

See Olsen et al.

Image: Nicolas Thomas for ESA/Roscosmos/CaSSIS. Cover Design: Alex Wing.


  • Editorial |

    The world’s glaciers are shrinking, with knock-on impacts for local communities. We need a better grasp of the hazards they leave behind.


News & Views

  • News & Views |

    Chloride-rich particulate matter has been identified as a major contributor to air-quality deterioration in cities across India. Identification and reduction of chloride emissions could therefore improve visibility and human health across the region.

    • Gufran Beig


Amendments & Corrections


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