Ground-based oblique-view photogrammetry and sentinel-1 spaceborne RADAR reflectivity snow melt processes assessment on an arctic glacier - Franche-Comté Electronique, Mécanique, Thermique et Optique - Sciences et Technologies (UMR 6174) Access content directly
Journal Articles Remote Sensing Year : 2023

Ground-based oblique-view photogrammetry and sentinel-1 spaceborne RADAR reflectivity snow melt processes assessment on an arctic glacier

Abstract

The snowpack evolution during the melt season on an Arctic glacier is assessed using ground-based oblique-view cameras, spaceborne imaging and spaceborne RADAR. The repeated and systematic Synthetic Aperture RADAR (SAR) imaging by the European Space Agency's Sentinel-1 spaceborne RADARs allows for all-weather, all-illumination condition monitoring of the snowcovered fraction of the glacier and hence assessing its water production potential. A comparison of the RADAR reflectivity with optical and multispectral imaging highlights the difference between the observed quantities-water content in the former, albedo in the latter-and the complementarity for understanding the snow melt processes. This work highlights the temporal inertia between the visible spring melting of the snowpack and the snow metamorphism. It was found that the snowpack exhibits that approximately 30 days before it starts to fade.
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Dates and versions

hal-04053367 , version 1 (31-03-2023)

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Jean-Michel Friedt, Éric Bernard, Madeleine Griselin. Ground-based oblique-view photogrammetry and sentinel-1 spaceborne RADAR reflectivity snow melt processes assessment on an arctic glacier. Remote Sensing, 2023, 15 (7), pp.1858. ⟨10.3390/rs15071858⟩. ⟨hal-04053367⟩
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