Release of New MEX-MARSIS Subsurface and AIS Data in the ESA's Planetary Science Archive

The European Space Agency’s (ESA) Mars Express (MEX) mission to Mars has been returning valuable scientific data for ∼15 years. This data is available to the public for free via the Planetary Science Archive (PSA), which houses the raw, calibrated, and higher-level data returned by the ESA’s planetary missions, including data provided by the various MEX instrument teams. Previously the Mars Advanced Radar for Subsurface and Ionospheric Sounding (MARSIS) [1] instrument’s subsurface data had a gap of several years, but in 2018 this issue was fixed and now 12+ years of subsurface radar sounding data, both in raw and calibrated form, are available for further scientific analysis by the public. The Active Ionospheric Sounding (AIS) mode of MARSIS has been steadily delivering data to the archive throughout the mission’s lifetime. Now, the AIS data will be updated with improved browse images. All this data and more can be accessed at the PSA at: https://archives.esac.esa.int/psa/