Ground based oblique view photogrammetry and Sentinel1 spaceborne RADAR reflectivity snow melt processes assessment on an Arctic glacier
International audience The snowpack evolution during the melt season on an Arctic glacieris assessed using ground-based oblique-view cameras, spaceborneimaging and spaceborne RADAR. The repeated and systematic SyntheticAperture RADAR (SAR) imaging by the European Space Agency’sSentinel-1 spaceborne...
Published in: | Remote Sensing |
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Main Authors: | , , |
Other Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2023
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Subjects: | |
Online Access: | https://hal.science/hal-04257646 https://doi.org/10.3390/rs15071858 |
Summary: | International audience The snowpack evolution during the melt season on an Arctic glacieris assessed using ground-based oblique-view cameras, spaceborneimaging and spaceborne RADAR. The repeated and systematic SyntheticAperture RADAR (SAR) imaging by the European Space Agency’sSentinel-1 spaceborne RADARs allows for all-weather,all-illumination condition monitoring of the snowcovered fractionof the glacier and hence assessing its water production potential.A comparison of the RADAR reflectivity with optical andmultispectral imaging highlights the difference between theobserved quantities—water content in the former, albedo in thelatter—and the complementarity for understanding the snow meltprocesses. This work highlights the temporal inertia between thevisible spring melting of the snowpack and the snow metamorphism.It was found that the snowpack exhibits that approximately 30 daysbefore it starts to fade. |
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