MOLA reference DTM and aligned HRSC DTM mosaic at the Martian South Pole

Published: 22 December 2021| Version 1 | DOI: 10.17632/w9v6fvksfg.1
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Description

Datasets from Xiao et al. (2022, in revision with Planetary and Space Science) titled "Prospects for Mapping Temporal Height Variations of the Seasonal CO2 Snow/Ice Caps at the Martian Poles by Co-registration of MOLA Profiles". An initial version of the manuscript can be accessed at https://arxiv.org/abs/2109.04899. ## abbreviations Mars Orbiter Laser Altimeter (MOLA) Digital Terrain Model (DTM) University College London (UCL) High-Resolution Stereo Camera (HRSC) MOLA_reference_DTM_from_self_registration.tif is the reference DTM generated from self-registration of the reprocessed MOLA profiles. The heights are references to a Martian sphere of 3396 km. It covers the region poleward of 78°S with a resolution of 500 m/pixel. Projection is polar stereographic centered at the South Pole. Number_footprints_per_pixel_MOLA_reference_DTM.tif is the map that demonstrates the number of available MOLA footprints (after reprocessing and self-registration) within each of the grid element for the generation of MOLA_reference_DTM_from_self_registration.tif. The original UCL HRSC DTMs at the Martian South Pole, with a gridding resolution of 50 m/pixel, can be accessed at https://www.cosmos.esa.int/web/psa/UCL-MSSL_iMars_HRSC_v1.0. Please also refer to Putri, A. R. D., Sidiropoulos, P., Muller, J. P., Walter, S. H., & Michael, G. G. (2019). A New South Polar Digital Terrain Model of Mars from the High-Resolution Stereo Camera (HRSC) onboard the ESA Mars Express. Planetary and Space Science, 174, 43-55. UCL_HRSC_DTMs_mosaic_after_alignment_to_MOLA_reference.tif is the mosaic of these UCL HRSC DTMs after being aligned to the self-registered MOLA profiles, which are used to generate MOLA_reference_DTM_from_self_registration.tif. Grid size is 50 m/pixel with a stereographic projection centered at South Pole. Height_difference_before_alignment.tif and Height_difference_after_alignment.tif show the relative height differences between these HRSC DTMs and the self-registered MOLA profiles before and after the alignment, respectively. Grid size is 170 m/pixel with a stereographic projection centered at South Pole. Relative tilts of magnitudes up to ~10 m are ubiquitous before the alignment. Meanwhile, after the alignment, height differences are homogeneous with magnitudes typically less than 2 m.

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Planetary Science, Carbon Dioxide, Laser Application, Mars

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