Monitoring spatio-temporal snow depth in the Chilean Andes using spaceborne tri-stereo photogrammetry

Data provided for submitted work: Thomas E. Shaw, César Deschamps-Berger, Simon Gascoin, James McPhee Monitoring spatial and temporal differences in Andean snow depth <br> derived from satellite tri-stereo photogrammetry --------- <strong>Contents:</strong> <strong>'SDmap_2017_3m.tif</strong>' = Filtered DEM difference for September 4th 2017.<br> <strong>'SDmap_2019_3m.tif'</strong> = Filtered DEM difference for September 2nd 2019.<br> <strong>'SDmap_gapfilled_2017_3m.tif'</strong> = Filtered DEM difference for September 4th 2017, gap-filled by random forest model. Random forest model initialised by 100 runs, using all available snow depths in 2017 and topographic indices as predictors (Shaw et al., 2020).<br> <strong>'SDmap_gapfilled_2019_3m.tif'</strong> = As above, but for the filtered DEM difference of September 2nd 2019. <br> <strong> 'Slope_3m.tif'</strong> = Slope angle (°) derived from the snow-free DEM (6th January 2018).<br> <strong>'TPI_3m.tif' </strong>= Topographic position index (TPI - Revuelto et al., 2014) derived from the snow-free DEM (6th January 2018) based upon a 60 m search distance.<br> <strong>'Aspect_3m.tif' </strong>= Aspect (°) derived from the snow-free DEM (6th January 2018).<br> <strong>'Exposure_SX_3m.tif'</strong> = Exposure parameter (SX) based upon Winstral et al. (2002) derived from the snow-free DEM (6th January 2018) and dominant ERA5 10 m wind direction for 2017 and 2019 winter average (45°).<br> <strong>'SkyViewFraction_3m.tif' </strong>= Sky view fraction derived from the snow-free DEM (6th January 2018). --------- <strong>NOTE:</strong> Products of the Pléiades DEM processing are provided here, though publication of the raw Pléiades DEMs are restricted by the regulations of the CNES agreement for grant PNTS‐2018‐ 4. --------- <strong>Cited works:</strong> <strong>Revuelto, J., López-Moreno, J. I., Azorin-Molina, C., &amp; Vicente-Serrano, S. M. (2014)</strong>. Topographic control of snowpack distribution in a small catchment in the central Spanish Pyrenees: Intra- and inter-annual persistence. The Cryosphere, 8(5), 1989–2006. https://doi.org/10.5194/tc-8-1989-2014<br> <strong>Shaw, T. E., Gascoin, S., Mendoza, P. A., Pellicciotti, F., &amp; McPhee, J. (2020)</strong>. Snow Depth Patterns in a High Mountain Andean Catchment from Satellite Optical Tristereoscopic Remote Sensing Water Resources Research. Water Resources Research, 56, 1–23. https://doi.org/10.1029/2019WR024880<br> <strong>Winstral, A., Elder, K., &amp; Davis, R. E. (2002)</strong>. Spatial Snow Modeling of Wind-Redistributed Snow Using Terrain-Based Parameters. Journal of Hydrometeorology, 3(5), 524–538. https://doi.org/10.1175/1525-7541(2002)003&lt;0524:SSMOWR&gt;2.0.CO;2