We try to estimate maximal snow depth in selected remote locations on few mountains, far from meteorological stations (gauges).
I wonder how to estimate as accurately as possible "near maximal snow depth" (probably toward the end of January or early February) in these remote areas? Can Sentinel 2 or kind of SAR provide some help, or maybe some other ideas (Landsat etc)? I suppose that the resolution must be better than 100 m as the small localities for which the data is needed. Thank you for any ideas.
Tedesco et al. (2015, Chapter Remote Sensing of the Cryosphere
) describe a LiDAR-based approach that might work at the resolution you require. Their paper is a very nice overview of the topic; maybe there's some detail in there to point you in the right direction.
Hi Ivica Milevski ,
Sentinel data is very fine resolution and should suffice for you needs.
There have been a lot of studies getting water surface elevation using SAR data so snow cover should also be possible.
Please refer to this article
https://www.computer.org/csdl/proceedings-article/icccnt/2017/08204066/12OmNASraRC
Article SAR interferometric coherence analysis for snow cover mappin...
and even this discussion on RG:
https://www.researchgate.net/post/Which_Methods_Could_be_Used_for_Snow_Depth_Estimation_by_Remote_Sensing_or_Statistical_Modeling
Regards,
Samya
Not as far as I am aware. It seems improbable from first principle.
Estimation of duration of snow cover is feasible and relevant as environmental variable.
Have you considered using stereo image pairs to extract a DEM of the surface without snow and then a stereo image pair to extract a DEM with snow and then generate a difference image of the two resulting DEMs? Ideally you would like stereo image pairs collected by a forward and downward looking satellite so that the images are collected on the same orbit so they would pretty much be images taken at the same time. Since they will be optical image pairs I realize cloud cover will be an issue, plus I am not sure if existing stereo imaging systems have the vertical resolution needed for this but this would be something to consider.
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